Synthetic Control of Excited States in Cyclometalated Ir(III) Complexes using Ancillary Ligands

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1 Synthetic Control of Excited States in Cyclometalated Ir(III) Complexes using Ancillary Ligands Jian Li, (a) Peter I. Djurovich, (a) Bert D. Alleyne, (a) Muhammed Yousufuddin, (a) Nam N. Ho, (a) J. Christopher Thomas, (b) Jonas C. Peters, (b) Robert Bau, (a) and Mark E. Thompson (a) * (a) University of Southern California, Department of Chemistry, Los Angeles, CA (b) Division of Chemistry and Chemical Engineering, Arnold and Mabel Beckman Laboratories of Chemical Synthesis, California Institute of Technology, Pasadena, CA Supporting information. Figure Captions. Figure S 1. Abbreviations of Iridium complexes used through out the paper. Figure S 2. Absorption spectra of (tpy) 2 Ir(pz) 2 Bpz 2 in hexane, CH 2 Cl 2, DMSO. 1 MLCT absorption spectra are demonstrated in the inset. Figure S 3. Absorption, emission (77 K) and excitation (77 K) spectra of [(tpy) 2 Ir(CN-t-Bu) 2 ](CF 3 SO 3 ). Figure S 4 Rigidochromic shift vs emission energy of (tpy) 2 Ir(LX) complexes in 2-MeTHF. The ancillary ligands (LX) are numbered as in Figure 1. Figure S 5. Absorption spectra of (dfppy) 2 Ir[(PPh 2 CH 2 ) 2 BPh 2 ], (dfppy) 2 Ir(pz 2 Bpz 2 ), and (dfppy) 2 Ir(acac) complexes in CH 2 Cl 2. Figure S 6. RT emission spectra of (dfppy) 2 Ir(PPh 2 CH 2 ) 2 BPh 2, (dfppy) 2 Ir(pz) 2 Bpz 2, (dfppy) 2 Ir(pz) 2 H, and (dfppy) 2 Ir(acac) complexes in 2-MeTHF. Figure S K emission spectra of (dfppy) 2 Ir(PPh 2 CH 2 ) 2 BPh 2, (dfppy) 2 Ir(pz) 2 Bpz 2, (dfppy) 2 Ir(pz) 2 H, and (dfppy) 2 Ir(acac) complexes in 2-MeTHF. Figure S 8. ORTEP drawings of (tpy) 2 Ir(PPh 2 CH 2 ) 2 BPh 2 H 2 O The thermal ellipsoids for the image represent 25 % probability limit. The hydrogen atoms, counter anion and solvent are omitted for clarity. Figure S 9. ORTEP drawings of (tpy) 2 Ir(CN-t-Bu) 2 (CF 3 SO 3 ) CHCl 3. The thermal ellipsoids for the image represent 25 % probability limit. The hydrogen atoms, counter anion and solvent are omitted for clarity.

2 Table Captions. Table S 1. Selected parameters for plot of k r vs. (tpy) 2 Ir(LL ) complexes. 1 Ε 2 υ υ T1 1 MLCT 3 1 υt 1 and plot of ε vs. 2 3 Ε υ 1 MLCT of Table S 2. Redox properties of (dfppy) 2 Ir(LL ) complexes. Redox measurements were carried out in DMF solution unless noted: (a) in CH 2 Cl 2 ; (b) in CH 3 CN. The redox values are reported relative to Fc+/Fc. The electrochemical process is reversible unless noted:(c) Quasi-reversible; (d) Irreversible. Table S 3. Photophysical properties of (dfppy) 2 Ir(LX) complexes. Absorption measurements were carried out in CH 2 Cl 2. Emission and lifetime measurements were carried out in 2-methyltetrahydrofuran (2- MeTHF). Table S 4. Selected excited state properties and IR absorption of selected (dfppy) 2 Ir(LX) complexes. Table S 5. Atomic coordinates (x10 4 ) and equivalent isotropic displacement parameters (Å 2 x10 3 ) for (tpy) 2 Ir(PPh 2 CH 2 ) 2 BPh 2 H 2 O. U(eq) is defined as one third of the trace of the orthogonalized U ij tensor. Table S 6. Bond lengths [Å] for (tpy) 2 Ir(PPh 2 CH 2 ) 2 BPh 2 H 2 O. Table S 7. Bond angles [ ] for (tpy) 2 Ir(PPh 2 CH 2 ) 2 BPh 2 H 2 O. Table S 8. Anisotropic displacement parameters (Å 2 x 10 3 ) for (tpy) 2 Ir(PPh 2 CH 2 ) 2 BPh 2 H 2 O.. The anisotropic displacement factor exponent takes the form: -2π 2 [h 2 a* 2 U hka*b*U 12 ] Table S 9. Atomic coordinates ( x 10 4 ) and equivalent isotropic displacement parameters (Å 2 x 10 3 ) for [(tpy) 2 Ir(CN-t-Bu) 2 ](CF 3 SO 3 ) CHCl 3. U(eq) is defined as one third of the trace of the orthogonalized U ij tensor. Table S 10. Bond lengths [Å] and angles [ ] for [(tpy) 2 Ir(CN-t-Bu) 2 ](CF 3 SO 3 ) CHCl 3. Table S 11. Bond angles [ ] for [(tpy) 2 Ir(CN-t-Bu) 2 ](CF 3 SO 3 ) CHCl 3. Table S 12. Anisotropic displacement parameters (Å 2 x 10 3 ) for [(tpy) 2 Ir(CN-t-Bu) 2 ](CF 3 SO 3 ) CHCl 3. The anisotropic displacement factor exponent takes the form: -2π 2 [h 2 a* 2 U hka*b*U 12 ]. Table S 13. Hydrogen coordinates ( x 10 4 ) and isotropic displacement parameters (Å 2 x 10 3 ) for [(tpy) 2 Ir(CN-t-Bu) 2 ](CF 3 SO 3 ) CHCl 3. S2

3 Figure S 1. Abbreviations of Iridium complexes used through out the paper. C C N Ir N L' L C N Ir = N Ir 2 N Ir 2 F N Ir F 2 (tpy) 2 Ir (ppy) 2 Ir (dfppy) 2 Ir (tpy) 2 Ir L L' = O Ir O 1 acac NN N N Ir B NN N N 5 (pz) 2 Bpz 2 N N Ir H N N 2 (pz) 2 H N N Et Ir B N N Et 3 (pz) 2 BEt 2 4 (pz) 2 BPh 2 N N N Ir BH N N N N N N 6 (tz) 3 BH NN Ph Ir B NN Ph Ir Ph 2 P Ph B P Ph Ph 2 7 (PPh 2 CH 2 ) 2 BPh 2 (tpy) 2 Ir L L' + = NNH Ir NNH NN Ir CH NN N N Ph 2 P Ph Ir Si P Ph Ph 2 Ir Ph 2 P P Ph 2 Ir N t-bu N t-bu 8 (pzh) 2 9 (pz) 3 CH 10 (PPh 2 CH 2 ) 2 SiPh 2 11 dppe 12 (CN-t-Bu) 2 (ppy) 2 Ir L L' - = Ir NCS NCS Ir CN CN 13 (NCS) 2 14 (CN) 2 S3

4 Figure S 2. Absorption spectra of (tpy)2ir(pz)2bpz2 in hexane, CH2Cl2, DMSO. 1MLCT absorption spectra are demonstrated in the inset absorption (a.u.) 0.5 absorption (a.u.) Wavelength (nm) Hexane CH 2 Cl 2 DMSO Wavelength (nm) Figure S 3. Absorption, emission (77 K) and excitation (77 K) spectra of [(tpy)2ir(cn-t-bu)2](cf3so3). 80 absorption 1.0 ε, 10 3 cm -1 M emission (77 K) excitation (77 K) PL intensity (a.u.) Wavelength (nm) S4

5 Figure S 4 Rigidochromic shift vs emission energy of (tpy) 2 Ir(LX) complexes in 2-MeTHF. The ancillary ligands (LX) are numbered as in Figure 1. 1 ν max (77 K)-ν max (RT), 10 2 cm E em (RT), ev Figure S 5. Absorption spectra of (dfppy)2ir[(pph2ch2)2bph2], (dfppy)2ir(pz2bpz2), and (dfppy)2ir(acac) complexes in CH2Cl X 25 X 5 (dfppy) 2 Ir(LX) at RT (PPh 2 CH 2 ) 2 BPh 2 (pz) 2 Bpz 2 acac ε, 10 3 cm -1 M Wavelength (nm) S5

6 Figure S 6. RT emission spectra of (dfppy)2ir(pph2ch2)2bph2, (dfppy)2ir(pz)2bpz2, (dfppy)2ir(pz)2h, and (dfppy)2ir(acac) complexes in 2-MeTHF. Emission Intensity (a.u.) RT emission of dfppy 2 IrLX 7 (Ph 2 PCH 2 ) 2 BPh 2 5 (pz) 2 Bpz 2 2 (pz) 2 H 1 acac Wavelength (nm) Figure S K emission spectra of (dfppy)2ir(pph2ch2)2bph2, (dfppy)2ir(pz)2bpz2, (dfppy)2ir(pz)2h, and (dfppy)2ir(acac) complexes in 2-MeTHF. Emission Intensity (a. u.) Wavelength (nm) (dfppy) 2 IrLX at 77 K 7 (PPh 2 CH 2 ) 2 BPh 2 5 (pz) 2 Bpz 2 2 (pz) 2 H 1 acac S6

7 Figure S 8. ORTEP drawings of (tpy) 2 Ir(PPh 2 CH 2 ) 2 BPh 2 H 2 O The thermal ellipsoids for the image represent 25 % probability limit. The hydrogen atoms, counter anion and solvent are omitted for clarity. Figure S 9. ORTEP drawings of (tpy)2ir(cn-t-bu)2(cf3so3) CHCl3. The thermal ellipsoids for the image represent 25 % probability limit. The hydrogen atoms, counter anion and solvent are omitted for clarity. S7

8 Table S 1. Selected parameters for plot of k r vs. (tpy) 2 Ir(LL ) complexes. 1 Ε 2 υ υ T1 1 MLCT 3 1 υt 1 and plot of ε vs. 2 3 Ε υ 1 MLCT of (C^N) 2 Ir(LL ) υ, 1 MLCT Ε, 10 4 cm cm -1 υ T 1, 10 4 cm -1 υ 2 1 T1 3 ε, Ε υ 1 MLCT cm cm -1 M υ T1 E 1 υ MLCT 10-7 cm -2 3 k r, 10 5 s -1 1 (tpy) 2 Ir(acac) (tpy) 2 Ir(pz) 2 H (tpy) 2 Ir(pz) 2 BEt (tpy) 2 Ir(pz) 2 BPh (tpy) 2 Ir(pz) 2 Bpz (tpy) 2 Ir(tz) 3 BH (tpy) 2 Ir(PPh 2 CH 2 ) 2 BPh [(tpy) 2 Ir(pzH) 2 ](CF 3 SO 3 ) [(tpy) 2 Ir(pz) 3 CH](CF 3 SO 3 ) [(tpy) 2 Ir(PPh 2 CH 2 ) 2 SiPh 2 ] (CF 3 SO 3 ) [(tpy) 2 Ir(dppe)](CF 3 SO 3 ) [(tpy) 2 Ir(CN-t-Bu) 2 ] (CF 3 SO 3 ) (NBu 4 )[(ppy) 2 Ir(NCS) 2 ] (NBu 4 )[(ppy) 2 Ir(CN) 2 ] S8

9 Table S 2. Redox properties of (dfppy)2ir(ll ) complexes. Redox measurements were carried out in DMF solution unless noted: (a) in CH2Cl2; (b) in CH3CN. The redox values are reported relative to Fc+/Fc. The electrochemical process is reversible unless noted:(c) Quasi-reversible; (d) Irreversible. (C^N) 2 Ir(LX) Ox E ½ (V) Red E½ (V) E (V) 1 (dfppy) 2 Ir(acac) (dfppy) 2 Ir(pz) 2 H 0.63 a,d, 0.93 a,d c 3.07, (dfppy) 2 Ir(pz) 2 Bpz a,c (dfppy) 2 Ir(PPh 2 CH 2 ) 2 BPh a,d [(dfppy) 2 Ir(CN-t-Bu) 2 ](CF 3 SO 3 ) >1.40 b d >3.59 Table S 3. Photophysical properties of (dfppy)2ir(lx) complexes. Absorption measurements were carried out in CH2Cl2. Emission and lifetime measurements were carried out in 2-methyltetrahydrofuran (2- MeTHF). (C^N) 2 Ir(LX) (dfppy) 2 Ir(acac) (dfppy) 2 Ir(pz) 2 H (dfppy) 2 Ir(pz) 2 Bpz 2 (dfppy) 2 Ir(PPh 2 CH 2 ) 2 BPh 2 abs, λ max a λ(nm) {ε, 10 3 cm -1 M -1 } 254 (47.8), 387 (5.0), 461 (0.9) 253 (42.3), 323 (11.8), 375 (5.3), 456 (0.4) 252 (39.8), 367 (4.9), 420 (0.52), 451(0.22) 251 (51.5), 312 (13.8), 413 (0.1), 442 (0.04) Emission at RT λ max (nm) τ(µs) Emission at 77K k Φ r, k nr, PL 10 5 s s -1 λ max τ(µs) (nm) E m(0-0) (ev) [(dfppy) 2 IrCN-t-Bu) 2 ](CF 3 SO 3 ) 252 (44.9), 308 (20.1), 412 (0.1), 440 (0.06) 444(sh), , 2.79 Table S 4. Selected excited state properties and IR absorption of selected (dfppy) 2 Ir(LX) complexes. (dfppy) 2 Ir(LX) E em (0-0) h ω (x 10 6 cm -1 ) M (cm -1 IR absorption ) S M ( cm -1 ) (dfppy) 2 Ir(acac) , 1478, 1428, 1403 (dfppy) 2 Ir(pz) 2 H , 1428, 1404 (dfppy) 2 Ir(pz) 2 Bpz , 1478, 1430, 1404 (dfppy) 2 Ir(PPh 2 CH 2 ) 2 BPh , 1434, 1406 [(dfppy) 2 Ir(CN-t-Bu) 2 ](CF 3 SO 3 ) , 1431, 1408 free dfppy ligand , 1466, 1440, 1416 S9

10 Table S 5. Atomic coordinates (x104) and equivalent isotropic displacement parameters (Å2x103) for (tpy)2ir(pph2ch2)2bph2 H2O. U(eq) is defined as one third of the trace of the orthogonalized Uij tensor. x y z U(eq) Ir(1) 9848(1) 2704(1) 1783(1) 31(1) N(1) 8858(4) 3499(5) 1828(3) 36(2) N(2) 10800(4) 2011(6) 1581(3) 38(2) B(1) 10164(6) 1691(7) 3483(4) 33(2) P(1) 9243(1) 1434(2) 2232(1) 32(1) P(2) 10785(1) 3052(2) 2693(1) 33(1) C(1) 8755(6) 3944(8) 2305(5) 49(2) C(2) 8077(7) 4429(9) 2329(6) 68(3) C(3) 7468(8) 4449(11) 1821(6) 83(4) C(4) 7572(7) 3997(10) 1346(6) 70(3) C(5) 8279(6) 3500(8) 1349(5) 49(3) C(6) 8441(6) 2955(8) 877(4) 50(3) C(7) 7873(8) 2886(12) 319(6) 83(5) C(8) 8075(10) 2321(11) -94(6) 87(5) C(9) 8749(8) 1779(11) 7(6) 70(3) C(10) 9264(7) 1849(8) 538(4) 54(3) C(11) 9118(6) 2433(7) 984(4) 41(2) C(12) 8923(11) 1106(13) -460(5) 108(6) C(13) 11062(6) 1127(7) 1752(4) 43(2) C(14) 11671(6) 672(9) 1595(5) 57(3) C(15) 12057(7) 1230(10) 1224(6) 74(4) C(16) 11793(7) 2110(9) 1059(5) 60(3) C(17) 11177(6) 2536(7) 1245(4) 43(2) C(18) 10879(6) 3508(8) 1096(4) 47(2) C(19) 11171(8) 4182(9) 752(5) 63(3) C(20) 10893(9) 5085(10) 648(5) 75(4) C(21) 10263(8) 5397(9) 864(5) 65(3) C(22) 9945(7) 4762(8) 1207(4) 53(3) C(23) 10240(6) 3787(7) 1333(4) 38(2) S10

11 C(24) 9913(10) 6409(10) 748(6) 91(5) C(25) 8167(5) 1394(7) 1926(4) 38(2) C(26) 7663(6) 1798(8) 2214(4) 49(2) C(27) 6875(7) 1761(11) 1984(5) 73(4) C(28) 6562(7) 1281(10) 1477(6) 69(4) C(29) 7045(7) 887(10) 1190(5) 64(3) C(30) 7861(6) 925(9) 1404(5) 54(3) C(31) 9537(6) -226(8) 1612(5) 49(2) C(32) 9644(7) -1209(8) 1552(5) 60(3) C(33) 9663(7) -1840(8) 1985(5) 58(3) C(34) 9565(6) -1503(8) 2495(5) 53(3) C(35) 9472(5) -528(7) 2584(4) 40(2) C(36) 9454(5) 125(6) 2148(4) 37(2) C(37) 11774(5) 3226(8) 2573(4) 41(2) C(38) 12350(7) 2536(9) 2736(6) 60(3) C(39) 13088(8) 2658(12) 2612(7) 82(5) C(40) 13216(8) 3521(14) 2360(6) 90(5) C(41) 12649(7) 4189(10) 2186(5) 70(4) C(42) 11926(6) 4087(8) 2301(4) 52(3) C(43) 10743(6) 4191(7) 3095(4) 41(2) C(44) 10448(6) 5032(8) 2804(5) 53(3) C(45) 10462(7) 5907(8) 3082(6) 62(3) C(46) 10763(8) 5966(9) 3668(6) 71(4) C(47) 11056(8) 5152(10) 3970(5) 67(3) C(48) 11068(6) 4258(8) 3684(4) 47(2) C(49) 9315(5) 1666(6) 2991(3) 33(2) C(50) 10902(5) 2040(6) 3204(3) 34(2) C(51) 10094(5) 2430(6) 4016(4) 34(2) C(52) 10679(6) 2366(7) 4542(4) 43(2) C(53) 10694(8) 2961(8) 4997(5) 57(3) C(54) 10102(7) 3656(8) 4976(4) 56(3) C(55) 9557(7) 3743(8) 4490(5) 58(3) C(56) 9540(6) 3137(8) 3997(4) 45(2) C(57) 10340(6) 613(7) 3777(4) 39(2) C(58) 10992(7) 32(8) 3780(5) 63(3) C(59) 11074(9) -882(11) 4038(6) 92(5) S11

12 C(60) 10540(10) -1256(10) 4307(6) 82(4) C(61) 9907(8) -704(8) 4314(5) 62(3) C(62) 9815(6) 193(8) 4069(4) 49(2) O(1) 7390(4) 2999(10) 3581(3) 115(4) Table S 6. Bond lengths [Å] for (tpy)2ir(pph2ch2)2bph2 H2O. Ir(1)-C(23) 2.047(9) Ir(1)-C(11) 2.057(9) Ir(1)-N(1) 2.082(7) Ir(1)-N(2) 2.083(7) Ir(1)-P(1) 2.420(2) Ir(1)-P(2) 2.431(2) N(1)-C(5) 1.334(12) N(1)-C(1) 1.339(12) N(2)-C(13) 1.324(12) N(2)-C(17) 1.363(12) B(1)-C(57) 1.631(14) B(1)-C(49) 1.664(13) B(1)-C(51) 1.651(13) B(1)-C(50) 1.667(13) P(1)-C(49) 1.809(8) P(1)-C(36) 1.852(9) P(1)-C(25) 1.860(9) P(2)-C(50) 1.823(9) P(2)-C(43) 1.841(9) P(2)-C(37) 1.848(9) C(1)-C(2) 1.380(15) C(2)-C(3) 1.410(18) C(3)-C(4) 1.341(17) C(4)-C(5) 1.419(16) C(5)-C(6) 1.435(15) C(6)-C(11) 1.360(15) C(6)-C(7) 1.460(15) S12

13 C(7)-C(8) 1.36(2) C(8)-C(9) 1.37(2) C(9)-C(10) 1.369(16) C(9)-C(12) 1.532(18) C(10)-C(11) 1.403(14) C(13)-C(14) 1.369(14) C(14)-C(15) 1.457(17) C(15)-C(16) 1.317(17) C(16)-C(17) 1.398(14) C(17)-C(18) 1.444(14) C(18)-C(19) 1.412(14) C(18)-C(23) 1.429(13) C(19)-C(20) 1.332(17) C(20)-C(21) 1.399(18) C(21)-C(22) 1.401(15) C(21)-C(24) 1.516(18) C(22)-C(23) 1.438(14) C(25)-C(26) 1.363(13) C(25)-C(30) 1.387(13) C(26)-C(27) 1.365(14) C(27)-C(28) 1.368(18) C(28)-C(29) 1.330(17) C(29)-C(30) 1.404(15) C(31)-C(32) 1.371(14) C(31)-C(36) 1.405(12) C(32)-C(33) 1.340(16) C(33)-C(34) 1.350(15) C(34)-C(35) 1.368(14) C(35)-C(36) 1.366(12) C(37)-C(38) 1.373(15) C(37)-C(42) 1.403(15) C(38)-C(39) 1.410(16) C(39)-C(40) 1.37(2) C(40)-C(41) 1.34(2) C(41)-C(42) 1.373(15) C(43)-C(44) 1.378(14) S13

14 C(43)-C(48) 1.385(13) C(44)-C(45) 1.367(15) C(45)-C(46) 1.369(17) C(46)-C(47) 1.360(18) C(47)-C(48) 1.403(16) C(51)-C(56) 1.368(13) C(51)-C(52) 1.419(13) C(52)-C(53) 1.351(14) C(53)-C(54) 1.404(16) C(54)-C(55) 1.317(16) C(55)-C(56) 1.434(14) C(57)-C(58) 1.397(14) C(57)-C(62) 1.408(13) C(58)-C(59) 1.386(18) C(59)-C(60) 1.36(2) C(60)-C(61) 1.352(19) C(61)-C(62) 1.353(15) Table S 7. Bond angles [ ] for (tpy)2ir(pph2ch2)2bph2 H2O. C(23)-Ir(1)-C(11) 82.0(4) C(23)-Ir(1)-N(1) 92.4(3) C(11)-Ir(1)-N(1) 78.3(4) C(23)-Ir(1)-N(2) 79.4(3) C(11)-Ir(1)-N(2) 93.6(4) N(1)-Ir(1)-N(2) 169.2(3) C(23)-Ir(1)-P(1) 173.4(3) C(11)-Ir(1)-P(1) 92.0(3) N(1)-Ir(1)-P(1) 83.6(2) N(2)-Ir(1)-P(1) 103.9(2) C(23)-Ir(1)-P(2) 94.7(3) C(11)-Ir(1)-P(2) 175.9(3) N(1)-Ir(1)-P(2) 104.4(2) N(2)-Ir(1)-P(2) 83.4(2) S14

15 P(1)-Ir(1)-P(2) 91.43(8) C(5)-N(1)-C(1) 119.5(9) C(5)-N(1)-Ir(1) 115.7(7) C(1)-N(1)-Ir(1) 124.7(7) C(13)-N(2)-C(17) 118.6(8) C(13)-N(2)-Ir(1) 125.9(6) C(17)-N(2)-Ir(1) 115.5(6) C(57)-B(1)-C(49) 109.2(7) C(57)-B(1)-C(51) 105.5(7) C(49)-B(1)-C(51) 109.3(7) C(57)-B(1)-C(50) 110.3(7) C(49)-B(1)-C(50) 112.3(7) C(51)-B(1)-C(50) 110.0(7) C(49)-P(1)-C(36) 108.1(4) C(49)-P(1)-C(25) 102.4(4) C(36)-P(1)-C(25) 98.2(4) C(49)-P(1)-Ir(1) 112.5(3) C(36)-P(1)-Ir(1) 121.8(3) C(25)-P(1)-Ir(1) 111.4(3) C(50)-P(2)-C(43) 108.1(4) C(50)-P(2)-C(37) 104.0(4) C(43)-P(2)-C(37) 97.4(4) C(50)-P(2)-Ir(1) 112.8(3) C(43)-P(2)-Ir(1) 121.7(3) C(37)-P(2)-Ir(1) 110.5(3) N(1)-C(1)-C(2) 123.4(11) C(1)-C(2)-C(3) 117.4(11) C(4)-C(3)-C(2) 118.9(11) C(3)-C(4)-C(5) 121.1(12) N(1)-C(5)-C(6) 114.5(9) N(1)-C(5)-C(4) 119.6(10) C(6)-C(5)-C(4) 125.9(10) C(11)-C(6)-C(5) 117.3(9) C(11)-C(6)-C(7) 120.9(11) C(5)-C(6)-C(7) 121.6(11) C(8)-C(7)-C(6) 116.8(13) S15

16 C(9)-C(8)-C(7) 123.1(12) C(8)-C(9)-C(10) 118.5(13) C(8)-C(9)-C(12) 121.0(13) C(10)-C(9)-C(12) 120.5(14) C(9)-C(10)-C(11) 122.4(12) C(6)-C(11)-C(10) 118.1(10) C(6)-C(11)-Ir(1) 113.7(7) C(10)-C(11)-Ir(1) 128.0(8) N(2)-C(13)-C(14) 124.9(10) C(13)-C(14)-C(15) 116.0(11) C(16)-C(15)-C(14) 118.6(10) C(15)-C(16)-C(17) 122.2(11) N(2)-C(17)-C(16) 119.6(10) N(2)-C(17)-C(18) 115.5(8) C(16)-C(17)-C(18) 124.9(10) C(19)-C(18)-C(23) 119.2(10) C(19)-C(18)-C(17) 125.7(10) C(23)-C(18)-C(17) 115.1(8) C(20)-C(19)-C(18) 123.1(11) C(19)-C(20)-C(21) 120.3(11) C(20)-C(21)-C(22) 119.4(12) C(20)-C(21)-C(24) 122.5(11) C(22)-C(21)-C(24) 118.1(12) C(21)-C(22)-C(23) 121.5(11) C(18)-C(23)-C(22) 116.5(9) C(18)-C(23)-Ir(1) 114.3(7) C(22)-C(23)-Ir(1) 129.2(7) C(26)-C(25)-C(30) 118.6(9) C(26)-C(25)-P(1) 121.1(8) C(30)-C(25)-P(1) 120.2(8) C(25)-C(26)-C(27) 120.4(11) C(26)-C(27)-C(28) 121.7(12) C(29)-C(28)-C(27) 118.5(11) C(28)-C(29)-C(30) 121.7(11) C(25)-C(30)-C(29) 119.0(11) C(32)-C(31)-C(36) 118.6(10) S16

17 C(33)-C(32)-C(31) 122.1(10) C(32)-C(33)-C(34) 119.2(11) C(33)-C(34)-C(35) 121.3(10) C(36)-C(35)-C(34) 120.2(9) C(35)-C(36)-C(31) 118.6(9) C(35)-C(36)-P(1) 121.4(7) C(31)-C(36)-P(1) 119.8(7) C(38)-C(37)-C(42) 119.8(10) C(38)-C(37)-P(2) 122.0(8) C(42)-C(37)-P(2) 118.2(8) C(37)-C(38)-C(39) 121.1(12) C(40)-C(39)-C(38) 116.9(12) C(39)-C(40)-C(41) 122.1(12) C(40)-C(41)-C(42) 121.8(13) C(41)-C(42)-C(37) 117.9(12) C(44)-C(43)-C(48) 117.9(9) C(44)-C(43)-P(2) 120.3(8) C(48)-C(43)-P(2) 121.6(8) C(45)-C(44)-C(43) 121.9(11) C(44)-C(45)-C(46) 120.2(12) C(47)-C(46)-C(45) 119.6(11) C(46)-C(47)-C(48) 120.5(12) C(43)-C(48)-C(47) 119.8(11) B(1)-C(49)-P(1) 122.8(6) B(1)-C(50)-P(2) 120.8(6) C(56)-C(51)-C(52) 115.6(9) C(56)-C(51)-B(1) 126.5(8) C(52)-C(51)-B(1) 117.8(8) C(53)-C(52)-C(51) 122.7(10) C(52)-C(53)-C(54) 120.7(11) C(55)-C(54)-C(53) 118.1(10) C(54)-C(55)-C(56) 122.2(10) C(51)-C(56)-C(55) 120.6(10) C(58)-C(57)-C(62) 113.8(9) C(58)-C(57)-B(1) 126.0(9) C(62)-C(57)-B(1) 120.2(8) S17

18 C(59)-C(58)-C(57) 120.9(12) C(60)-C(59)-C(58) 122.6(13) C(59)-C(60)-C(61) 117.5(12) C(62)-C(61)-C(60) 121.1(11) C(61)-C(62)-C(57) 124.0(11) Symmetry transformations used to generate equivalent atoms: Table S 8. Anisotropic displacement parameters (Å2x 103) for (tpy)2ir(pph2ch2)2bph2 H2O.. The anisotropic displacement factor exponent takes the form: -2π2[h2a*2U hka*b*U12] U 11 U 22 U 33 U 23 U 13 U 12 Ir(1) 31(1) 33(1) 31(1) -3(1) 9(1) -1(1) N(1) 29(4) 36(4) 42(4) 0(3) 10(3) 4(3) N(2) 36(4) 44(5) 37(4) -10(3) 15(3) 0(4) B(1) 32(5) 37(6) 29(5) 2(4) 9(4) 5(4) P(1) 30(1) 33(1) 32(1) -4(1) 8(1) -1(1) P(2) 31(1) 36(1) 33(1) -4(1) 10(1) -2(1) C(1) 50(6) 46(6) 50(6) 3(5) 13(5) 3(5) C(2) 67(8) 59(7) 89(9) -8(6) 40(7) 18(6) C(3) 53(8) 105(11) 96(10) 11(9) 28(8) 38(8) C(4) 55(7) 71(9) 76(8) 12(7) 1(6) 16(6) C(5) 40(6) 49(6) 55(6) 13(5) 4(5) 1(5) C(6) 49(6) 53(6) 42(5) 8(5) 2(5) -7(5) C(7) 61(8) 125(13) 47(7) 11(8) -15(6) -6(8) C(8) 93(12) 119(12) 36(7) -2(7) -10(7) -21(9) C(9) 73(8) 87(9) 49(8) -9(7) 12(7) -26(7) C(10) 66(7) 54(6) 43(5) -7(5) 18(5) -16(6) C(11) 43(6) 49(6) 28(5) -3(4) 4(4) -12(4) C(12) 137(16) 138(15) 50(7) -44(8) 23(9) -20(12) C(13) 40(5) 47(6) 42(5) -4(4) 14(4) 0(5) C(14) 48(6) 61(7) 62(7) -10(5) 15(5) 13(5) C(15) 55(8) 89(10) 81(9) -37(8) 26(7) 11(7) C(16) 51(7) 70(9) 72(8) -3(6) 36(6) -4(6) S18

19 C(17) 43(6) 54(6) 36(5) -7(4) 15(4) -2(4) C(18) 59(7) 51(6) 34(5) -5(4) 19(5) -10(5) C(19) 77(8) 68(8) 58(7) 4(6) 41(6) -10(7) C(20) 109(12) 69(9) 59(8) 13(6) 42(8) -22(8) C(21) 87(9) 54(7) 51(7) 3(5) 7(6) -15(6) C(22) 64(8) 51(6) 40(5) 3(5) 5(5) -5(6) C(23) 39(5) 42(5) 33(5) -1(4) 9(4) 0(4) C(24) 137(14) 57(9) 78(9) 17(7) 22(9) -15(9) C(25) 32(5) 34(5) 45(5) 8(4) 6(4) -7(4) C(26) 38(5) 57(7) 54(6) 0(5) 14(5) 2(5) C(27) 34(6) 120(11) 66(8) 19(7) 12(6) 12(7) C(28) 37(6) 96(11) 70(9) 15(8) 9(6) -6(6) C(29) 58(8) 80(9) 44(6) 3(6) -8(6) -23(7) C(30) 48(6) 62(7) 48(6) -6(5) 3(5) -5(5) C(31) 53(6) 43(6) 54(6) -10(5) 17(5) -4(5) C(32) 74(8) 51(7) 62(7) -24(6) 27(6) -2(6) C(33) 76(8) 34(6) 68(7) -6(5) 23(6) 2(6) C(34) 53(6) 45(6) 62(7) 4(5) 18(5) -4(5) C(35) 36(5) 33(5) 49(6) 5(4) 6(4) 0(4) C(36) 31(5) 35(5) 47(5) -5(4) 13(4) -4(4) C(37) 30(5) 59(7) 34(5) -12(4) 9(4) -8(5) C(38) 37(6) 70(8) 77(8) 5(6) 21(6) 2(5) C(39) 39(7) 121(13) 96(11) 36(9) 33(7) 18(7) C(40) 38(7) 160(16) 76(9) -16(10) 21(7) -18(9) C(41) 54(7) 85(9) 79(8) -8(7) 33(7) -29(7) C(42) 46(6) 59(7) 52(6) -4(5) 15(5) -15(5) C(43) 42(5) 37(5) 46(5) -9(4) 15(4) -6(4) C(44) 58(7) 49(6) 52(6) 0(5) 14(5) 3(5) C(45) 62(8) 41(6) 86(9) -14(6) 22(7) 4(5) C(46) 67(8) 50(7) 105(11) -30(7) 42(8) -16(6) C(47) 69(8) 79(9) 61(7) -24(7) 28(6) -28(7) C(48) 48(6) 56(7) 38(5) -9(4) 13(4) -20(5) C(49) 35(5) 35(5) 33(4) -4(4) 14(4) 2(4) C(50) 34(5) 38(5) 27(4) -5(3) 3(4) 2(4) C(51) 32(5) 36(5) 36(5) 2(4) 11(4) -4(4) C(52) 52(6) 45(5) 27(4) -4(4) -2(4) -1(5) S19

20 C(53) 65(8) 52(7) 48(6) -4(5) 3(6) -6(6) C(54) 71(8) 58(7) 38(5) -16(5) 13(5) -7(6) C(55) 55(7) 52(7) 73(8) -16(6) 23(6) 11(5) C(56) 38(5) 49(6) 49(6) -5(5) 10(4) 4(5) C(57) 43(5) 43(6) 32(5) -4(4) 9(4) 0(4) C(58) 69(8) 47(7) 79(8) 8(6) 29(7) 14(6) C(59) 99(11) 80(10) 91(10) 19(8) 10(9) 53(9) C(60) 126(14) 48(8) 78(9) 18(7) 37(9) 0(8) C(61) 79(9) 51(7) 64(7) 5(6) 31(6) -10(6) C(62) 58(6) 46(6) 46(6) 9(5) 16(5) 6(5) O(1) 30(4) 287(12) 29(4) -33(5) 10(3) 27(6) Table S 9. Atomic coordinates ( x 104) and equivalent isotropic displacement parameters (Å2x 103) for [(tpy)2ir(cn-t-bu)2](cf3so3) CHCl3. U(eq) is defined as one third of the trace of the orthogonalized Uij tensor. x y z U(eq) Ir(1) 5231(1) 1788(1) 7549(1) 30(1) Cl(1) 1204(4) 748(5) 8218(2) 251(3) Cl(2) 393(4) 2633(4) 8336(3) 223(2) Cl(3) -872(3) 1016(4) 8041(2) 197(2) S(1) 5915(1) 6118(1) 8711(1) 59(1) F(1) 6422(4) 5901(5) 9835(2) 119(2) F(2) 4895(4) 5879(4) 9560(2) 99(2) F(3) 5686(5) 7280(4) 9594(2) 100(2) O(1) 5925(4) 5051(3) 8658(2) 75(2) O(2) 5047(5) 6609(4) 8378(3) 86(2) O(3) 6794(4) 6643(4) 8652(3) 83(2) N(1) 4142(3) 2856(3) 7574(2) 39(1) N(2) 6087(3) 515(3) 7522(2) 31(1) N(3) 6682(3) 2483(3) 8676(2) 41(1) N(4) 5845(3) 2869(3) 6438(2) 41(1) C(1) 4230(5) 3656(5) 7949(3) 57(2) C(2) 3459(7) 4291(6) 7984(4) 83(3) S20

21 C(3) 2569(6) 4123(6) 7633(4) 84(3) C(4) 2467(6) 3316(5) 7249(4) 70(2) C(5) 3266(4) 2677(4) 7221(3) 44(1) C(6) 3275(4) 1819(4) 6833(2) 38(1) C(7) 2497(4) 1574(5) 6384(3) 49(2) C(8) 2596(4) 787(5) 6004(3) 53(2) C(9) 3472(5) 229(5) 6057(3) 50(2) C(10) 4239(4) 465(4) 6516(2) 41(1) C(11) 4164(4) 1246(4) 6904(2) 35(1) C(12) 3587(6) -614(6) 5632(3) 84(3) C(13) 6801(4) 394(5) 7175(2) 44(1) C(14) 7307(4) -497(5) 7146(3) 53(2) C(15) 7068(5) -1302(5) 7478(3) 60(2) C(16) 6361(5) -1200(5) 7833(3) 54(2) C(17) 5874(4) -272(4) 7860(2) 38(1) C(18) 5129(4) -51(4) 8241(2) 39(1) C(19) 4883(5) -728(5) 8659(3) 56(2) C(20) 4238(6) -441(6) 9031(3) 65(2) C(21) 3812(5) 512(5) 8994(3) 58(2) C(22) 4036(4) 1170(5) 8557(2) 45(1) C(23) 4697(4) 894(4) 8172(2) 35(1) C(24) 3133(7) 839(7) 9425(4) 91(3) C(25) 6178(4) 2295(4) 8238(2) 37(1) C(26) 7128(5) 2554(5) 9296(3) 54(2) C(27) 7917(6) 3361(6) 9364(3) 75(2) C(28) 6295(7) 2815(7) 9633(3) 81(2) C(29) 7546(7) 1518(6) 9463(4) 88(3) C(30) 5697(4) 2519(4) 6871(2) 37(1) C(31) 5864(6) 3203(5) 5834(3) 55(2) C(32) 4937(7) 3824(8) 5656(4) 104(3) C(33) 5875(8) 2258(6) 5465(3) 93(3) C(34) 6800(6) 3813(6) 5826(3) 80(2) C(35) 236(7) 1524(8) 7971(4) 96(3) C(36) 5734(5) 6322(6) 9463(3) 61(2) S21

22 Table S 10. Bond lengths [Å] and angles [ ] for [(tpy)2ir(cn-t-bu)2](cf3so3) CHCl3. Ir(1)-C(25) 2.004(6) Ir(1)-C(30) 2.018(6) Ir(1)-C(11) 2.047(5) Ir(1)-N(2) 2.059(4) Ir(1)-N(1) 2.061(4) Ir(1)-C(23) 2.072(5) Cl(1)-C(35) 1.704(11) Cl(2)-C(35) 1.691(11) Cl(3)-C(35) 1.686(10) S(1)-O(3) 1.412(6) S(1)-O(1) 1.421(5) S(1)-O(2) 1.463(6) S(1)-C(36) 1.803(8) F(1)-C(36) 1.299(8) F(2)-C(36) 1.336(8) F(3)-C(36) 1.310(8) N(1)-C(1) 1.359(7) N(1)-C(5) 1.362(7) N(2)-C(13) 1.359(6) N(2)-C(17) 1.359(6) N(3)-C(25) 1.158(7) N(3)-C(26) 1.464(7) N(4)-C(30) 1.143(7) N(4)-C(31) 1.461(7) C(1)-C(2) 1.360(9) C(2)-C(3) 1.372(12) C(3)-C(4) 1.382(10) C(4)-C(5) 1.392(8) C(5)-C(6) 1.446(8) C(6)-C(7) 1.405(8) C(6)-C(11) 1.420(7) C(7)-C(8) 1.380(9) C(8)-C(9) 1.397(9) C(9)-C(10) 1.405(7) S22

23 C(9)-C(12) 1.508(9) C(10)-C(11) 1.382(7) C(13)-C(14) 1.375(8) C(14)-C(15) 1.380(9) C(15)-C(16) 1.361(9) C(16)-C(17) 1.405(8) C(17)-C(18) 1.466(7) C(18)-C(23) 1.385(7) C(18)-C(19) 1.393(8) C(19)-C(20) 1.370(9) C(20)-C(21) 1.389(9) C(21)-C(22) 1.397(8) C(21)-C(24) 1.519(9) C(22)-C(23) 1.404(7) C(26)-C(27) 1.509(9) C(26)-C(28) 1.510(10) C(26)-C(29) 1.514(10) C(31)-C(32) 1.514(11) C(31)-C(34) 1.515(10) C(31)-C(33) 1.516(9) Table S 11. Bond angles [ ] for [(tpy)2ir(cn-t-bu)2](cf3so3) CHCl3. C(25)-Ir(1)-C(30) 102.0(2) C(25)-Ir(1)-C(11) 174.1(2) C(30)-Ir(1)-C(11) 83.2(2) C(25)-Ir(1)-N(2) 89.84(19) C(30)-Ir(1)-N(2) 97.11(18) C(11)-Ir(1)-N(2) 92.07(18) C(25)-Ir(1)-N(1) 97.5(2) C(30)-Ir(1)-N(1) 90.22(19) C(11)-Ir(1)-N(1) 79.82(19) N(2)-Ir(1)-N(1) (17) S23

24 C(25)-Ir(1)-C(23) 84.2(2) C(30)-Ir(1)-C(23) 172.8(2) C(11)-Ir(1)-C(23) 90.7(2) N(2)-Ir(1)-C(23) 79.20(18) N(1)-Ir(1)-C(23) 92.51(19) O(3)-S(1)-O(1) 117.7(3) O(3)-S(1)-O(2) 111.4(4) O(1)-S(1)-O(2) 114.6(4) O(3)-S(1)-C(36) 105.0(4) O(1)-S(1)-C(36) 103.6(3) O(2)-S(1)-C(36) 102.5(3) C(1)-N(1)-C(5) 120.0(5) C(1)-N(1)-Ir(1) 124.0(4) C(5)-N(1)-Ir(1) 115.8(4) C(13)-N(2)-C(17) 118.6(5) C(13)-N(2)-Ir(1) 125.1(4) C(17)-N(2)-Ir(1) 116.2(3) C(25)-N(3)-C(26) 164.8(6) C(30)-N(4)-C(31) 168.8(6) N(1)-C(1)-C(2) 121.7(7) C(1)-C(2)-C(3) 119.3(7) C(2)-C(3)-C(4) 119.8(7) C(3)-C(4)-C(5) 119.8(7) N(1)-C(5)-C(4) 119.4(6) N(1)-C(5)-C(6) 114.7(5) C(4)-C(5)-C(6) 125.9(6) C(7)-C(6)-C(11) 119.9(5) C(7)-C(6)-C(5) 124.1(5) C(11)-C(6)-C(5) 115.9(5) C(8)-C(7)-C(6) 120.4(6) C(7)-C(8)-C(9) 120.6(5) C(8)-C(9)-C(10) 118.7(6) C(8)-C(9)-C(12) 120.5(6) C(10)-C(9)-C(12) 120.8(6) C(11)-C(10)-C(9) 122.2(5) C(10)-C(11)-C(6) 118.2(5) S24

25 C(10)-C(11)-Ir(1) 128.1(4) C(6)-C(11)-Ir(1) 113.5(4) N(2)-C(13)-C(14) 122.7(5) C(13)-C(14)-C(15) 118.4(6) C(16)-C(15)-C(14) 120.2(6) C(15)-C(16)-C(17) 119.8(6) N(2)-C(17)-C(16) 120.3(5) N(2)-C(17)-C(18) 114.5(5) C(16)-C(17)-C(18) 125.2(5) C(23)-C(18)-C(19) 121.3(5) C(23)-C(18)-C(17) 115.7(5) C(19)-C(18)-C(17) 122.9(5) C(20)-C(19)-C(18) 119.7(6) C(19)-C(20)-C(21) 121.1(6) C(20)-C(21)-C(22) 118.6(6) C(20)-C(21)-C(24) 120.7(6) C(22)-C(21)-C(24) 120.7(7) C(21)-C(22)-C(23) 121.4(6) C(18)-C(23)-C(22) 117.8(5) C(18)-C(23)-Ir(1) 114.1(4) C(22)-C(23)-Ir(1) 127.8(4) N(3)-C(25)-Ir(1) 171.0(5) N(3)-C(26)-C(27) 109.5(5) N(3)-C(26)-C(28) 106.1(5) C(27)-C(26)-C(28) 111.4(6) N(3)-C(26)-C(29) 106.0(5) C(27)-C(26)-C(29) 112.4(7) C(28)-C(26)-C(29) 111.2(7) N(4)-C(30)-Ir(1) 170.0(5) N(4)-C(31)-C(32) 106.8(6) N(4)-C(31)-C(34) 108.0(6) C(32)-C(31)-C(34) 112.3(7) N(4)-C(31)-C(33) 106.5(5) C(32)-C(31)-C(33) 112.1(7) C(34)-C(31)-C(33) 110.9(7) Cl(3)-C(35)-Cl(2) 110.5(6) S25

26 Cl(3)-C(35)-Cl(1) 112.9(7) Cl(2)-C(35)-Cl(1) 109.0(6) F(1)-C(36)-F(3) 108.7(6) F(1)-C(36)-F(2) 104.7(6) F(3)-C(36)-F(2) 108.3(6) F(1)-C(36)-S(1) 112.2(6) F(3)-C(36)-S(1) 112.7(5) F(2)-C(36)-S(1) 109.8(5) Symmetry transformations used to generate equivalent atoms: Table S 12. Anisotropic displacement parameters (Å2x 103) for [(tpy)2ir(cn-t-bu)2](cf3so3) CHCl3. The anisotropic displacement factor exponent takes the form: -2π2[h2a*2U hka*b*U12]. U 11 U 22 U 33 U 23 U 13 U 12 Ir(1) 28(1) 32(1) 32(1) -4(1) 9(1) -3(1) Cl(1) 197(5) 327(7) 216(5) -63(5) -9(4) 147(5) Cl(2) 199(5) 165(4) 274(6) -73(4) -60(4) 5(4) Cl(3) 147(3) 301(5) 128(3) 75(3) -26(2) -123(4) S(1) 66(1) 51(1) 67(1) -5(1) 27(1) -5(1) F(1) 129(5) 140(5) 76(4) 22(3) -27(3) 27(4) F(2) 96(4) 116(4) 96(4) 8(3) 53(3) -8(3) F(3) 168(5) 73(3) 70(3) -15(2) 47(3) 4(3) O(1) 90(4) 49(3) 92(4) -10(3) 31(3) -3(3) O(2) 94(4) 96(4) 68(4) 8(3) 9(3) 32(3) O(3) 82(4) 77(4) 99(5) -10(3) 46(3) -15(3) N(1) 45(3) 35(2) 39(3) -2(2) 14(2) 6(2) N(2) 26(2) 38(2) 28(2) -3(2) 3(2) 0(2) N(3) 45(3) 44(3) 35(3) -7(2) 5(2) -5(2) N(4) 42(3) 42(2) 39(3) 1(2) 11(2) -8(2) C(1) 67(4) 40(3) 66(4) -12(3) 19(3) 3(3) C(2) 95(7) 64(5) 95(6) -16(4) 33(5) 29(5) C(3) 78(6) 65(5) 115(7) -4(5) 34(5) 40(5) C(4) 53(4) 77(5) 83(6) -2(4) 17(4) 25(4) S26

27 C(5) 36(3) 47(3) 51(4) 3(3) 16(2) 6(3) C(6) 29(2) 44(3) 43(3) 6(2) 11(2) -1(2) C(7) 31(3) 65(4) 51(4) 13(3) 2(2) 0(3) C(8) 40(3) 66(4) 48(4) 8(3) -9(3) -14(3) C(9) 51(3) 56(4) 39(3) -4(3) -7(3) -8(3) C(10) 40(3) 41(3) 41(3) -4(2) 2(2) -3(2) C(11) 33(3) 38(3) 36(3) 3(2) 11(2) 0(2) C(12) 93(6) 82(5) 65(5) -34(4) -25(4) -3(5) C(13) 37(3) 51(3) 45(3) -2(3) 13(2) -3(3) C(14) 35(3) 63(4) 64(4) -12(3) 18(3) 8(3) C(15) 55(4) 60(4) 66(5) 2(4) 11(3) 19(3) C(16) 56(4) 50(4) 57(4) 7(3) 11(3) 12(3) C(17) 39(3) 39(3) 34(3) 3(2) 0(2) 5(2) C(18) 41(3) 43(3) 33(3) 3(2) 6(2) -3(2) C(19) 79(5) 46(3) 46(4) 8(3) 19(3) 0(3) C(20) 81(5) 67(4) 54(4) 11(3) 31(4) -10(4) C(21) 64(4) 66(4) 51(4) 0(3) 33(3) -11(3) C(22) 49(3) 48(3) 42(3) -9(3) 19(3) -7(3) C(23) 30(2) 40(3) 35(3) -4(2) 10(2) -7(2) C(24) 103(7) 111(7) 74(6) -10(5) 63(5) -10(5) C(25) 42(3) 32(3) 39(3) -6(2) 14(2) -8(2) C(26) 63(4) 58(4) 37(3) -8(3) -4(3) 2(3) C(27) 68(5) 89(6) 61(5) -18(4) -9(4) -25(4) C(28) 99(6) 105(6) 42(4) -20(4) 16(4) -6(5) C(29) 107(7) 77(5) 70(6) -4(4) -20(5) 14(5) C(30) 29(3) 35(3) 47(3) -7(2) 11(2) -3(2) C(31) 75(5) 58(4) 33(3) 9(3) 14(3) 0(3) C(32) 105(7) 128(8) 77(6) 38(6) 5(5) 38(7) C(33) 151(9) 86(6) 43(4) -17(4) 18(5) -12(6) C(34) 100(6) 87(6) 63(5) 15(4) 41(4) -22(5) C(35) 91(7) 131(8) 67(6) -7(5) 12(5) -9(6) C(36) 62(4) 63(4) 56(4) 8(3) 5(3) 0(4) S27

28 Table S 13. Hydrogen coordinates ( x 104) and isotropic displacement parameters (Å2x 103) for [(tpy)2ir(cn-t-bu)2](cf3so3) CHCl3. x y z U(eq) H(1) H(2) H(3) H(4) H(7) H(8) H(10) H(12A) H(12B) H(12C) H(13) H(14) H(15) H(16) H(19) H(20) H(22) H(24A) H(24B) H(24C) H(27A) H(27B) H(27C) H(28A) H(28B) H(28C) H(29A) H(29B) H(29C) H(32A) S28

29 H(32B) H(32C) H(33A) H(33B) H(33C) H(34A) H(34B) H(34C) H(35) S29

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