CCl 3 + and CBr 3 + Salts with the [Al(OR F ) 4 ] and [( F RO) 3 Al-F-Al(OR F ) 3 ] Anions

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Supporting Information to CCl 3 and CBr 3 Salts with the [Al(OR F ) 4 ] and [( F RO) 3 Al-F-Al(OR F ) 3 ] Anions Anna Lehner, Nils Trapp, Harald Scherer and Ingo Krossing* * Albert-Ludwigs-Universität Freiburg, Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum FMF, Albertstr. 21, D-79104 Freiburg i. Br., Germany, phone: 49 761 203 6122, e-mail: krossing@uni-freiburg.de Contents 1.) NMR Spectrocopy 2.) Vibrational Spectroscopy 3.) Crystallography 4.) Attempted UV-Vis-Spectroscopy: Calcs and Spectra 5.) Quantum chemical calculations

1. NMR Spectrocopy In situ reactions were done in sealed NMR tubes that were filled from a three valve reactions vessel shown in the following figure on the right: All other reactions were done in the two valve vessel shown left. Further NMR Spectra of the CX 3 -salts: Stability and visibility of CCl 3 [pftb]: Temperature effects. a) 233 K b) 263 K c) 233 K d) 273 K e) 233 K 240 220 200 180 160 140 ppm 240 220 200 180 160 140 ppm 13 C-NMR-Spectra of CCl 3 [pftb] in SO 2 ClF (100,6 MHz). a) at the day of the filtration, NS = 860, 40 C, b) 10 days later, NS = 512, 10 C, c) same day, lower temperature NS = 512, 40 C, d) after 15 days; NS = 512, 0 C, e) same day, lower temperature, NS = 512, 40 C.

* CBr 3 * CH 2Cl 2 CBr 4 220 200 180 160 140 120 100 80 60 40 20 0-20 ppm 13 C-NMR-Spectrum of CBr 3 [al-f-al] in SO 2 at 30 C: Excess CBr 4 from the reaction is visible; CH 2 Cl 2 stems from the Ag(CH 2 Cl 2 ) x [al-f-al] used (x 1-2). Decomposition of the Anion in CBr 3 [al-f-al]: Temperature effects. 1 h bei RT 8 7 6 5 4 3 2 1 0-1 ppm 3 h bei RT 8 7 6 5 4 3 2 1 0-1 ppm 5 h bei RT 8 7 6 5 4 3 2 1 0-1 ppm -74.5-75.0-75.5 ppm 240 220 200 180 160 140 ppm Sections of the 19 F-(376,5 MHz) and 13 C-(100,6 MHz)-NMR-Spectra of CBr 3 [al-f-al] in SO 2 at RT (left: 19 F-NMR-Spectra, right: 13 C-NMR-Spectra, upper trace: 1 h at RT, middle: 3 h at RT, lower trace: 5 h at RT). 2. Vibrational Spectroscopy of 1 to 4 S-Table 1: Experimental and calculated IR-data of CBr 3 [Al(pftb) 4 ] (3) und CCl 3 [Al(pftb) 4 ] (1).

exp. IR (1) [a] exp. IR (3) [a] calc. IR-Bands [Al(pftb) 4 ] [b] calc. IR-Bands Banden CBr 3 [b] calc. IR-Bands Banden CCl 3 [b] Assignment - 519 (m) 520 (vw) F-C-F - 537 (m) 547 (w) F-C-F, O-Al-O - 561/571 (w) 728 (s) 727 (s) 711 (m) Al-O, F-C-F 743 (w) 743 (w) 738 (w) Al-O, F-C-F 833 (w) 832 (w) 823 (w) Al-O 877 (m) 860 (w) CBr 3, e 975 (s ) 973 (s) 961 (m) C-C, C-F 975 (s) - 1110 (w) C-C, C-F 1038 (m) 1011 (w) CCl 3, e 1178 (m) 1179 (m) 1141 (w) C-C, C-F 1218 (s) 1219 (s) 1216 (s) C-C-C, C-C, C-F 1249 (s) 1248 (s) 1232 (s) C-C-C, C-F 1264 (s) 1265 (s) 1263 (s) C-C, C-F 1300 (m) 1299 (m) - - 1354 (s) 1353 (w) 1338 (m) C-O, C-C [a] ZnSe-ATR (ATR-corr.), [b] b-p/sv(p) S-Table 2: Experimental and calculated IR-data of CBr 3 [al-f-al] (4) and CCl 3 [al-f-al] (2). Exp. IR (2) [a] exp. IR (4) [a] calc. IR-Bands [al-f-al] [b] calc. IR-Bands CBr 3 [b] calc. IR-Bands CCl 3 [b] Assignment 538 (m) 538 (m) 520 (w) F-C-F, Al-F-Al 573 (m) 572 (m) 560 (w) F-C-F, Al-O 643 (m) 639 (m) 635 (w) Al-F-Al 728 (s) 728 (s) 710 (m) F-C-F, Al-O - - 790 (vw) Al-O, C-C-F 841 (w) 837 (w) 846 (vw) Al-O, Al-F-Al - 865 (w) 856 (vw) Al-O, Al-F-Al 877 (m ) 860 (w) CBr 3, e 975 (s) 975 (s) 965 (m) O-C-C, C-F 1038 (m) 1011 (w) CCl 3, e - - 1111 (vw) C-C, C-F 1187 (m) 1183 (m) 1145 (vw) C-C, C-F 1218 (s) 1218 (s) 1211 (m) C-C, C-F, C-C-C 1250 (s) 1249 (s) 1236 (s) C-C, C-F 1268 (m) 1268 (m) 1263 (m) C-F, C-C 1301 (m) 1301 (m) - - - - 1332 (m) C-O, C-C, C-F 1356 (w) 1355 (w) 1347 (w) C-O, C-C [a] ZnSe-ATR (ATR-korr.), [b] BP86/SV(P) Infrared spectra of all compounds overlaid with experimental spectra of the starting silver salts and IR simulations at the BP86/SV(P) level of isolated CX 3, isolated [A] as well as an overlay of the latter

two giving the simulated [CX 3 ] [A] spectrum. normierte Intensität 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 Experiment Ag[al-f-al] Experiment CCl 3 [al-f-al] IRsim CCl 3 [al-f-al] IRsim CCl 3 IRsim [al-f-al] - Wellenzahlen / cm -1 S-Figure 1: Simulated and experimental ATR-IR-Spectra of CCl 3 [al-f-al] (2). normierte Intensität Experiment Ag[Al(pftb) 4 ] Experiment CBr 3 [Al(pftb) 4 ] IRsim CBr 3 [Al(pftb) 4 ] IRsim CBr 3 IRsim [Al(pftb) 4 ]) - 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 Wellenzahlen / cm -1 S-Figure 2: Simulated and experimental ATR-IR-Spectra of CBr 3 [Al(pftb) 4 ] (3).

normierte Intensität 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 Experiment Ag[al-f-al] Experiment CBr 3 [al-f-al] IRsim CBr 3 [al-f-al] IRsim CBr 3 IRsim [al-f-al] - Wellenzahlen / cm -1 S-Figure 3: Simulated and experimental ATR-IR-Spectra of CBr 3 [al-f-al] (4). 3. Details of the partial crystal structure of 1 Kristallographische Daten zur Kristallstruktur von CCl 3 [Al(OC(CF 3 ) 3 ) 4 ] (1). Kristallgröße [mm] 0.2 x 0.3 x 0.2 Kristallsystem orthorhomisch Raumgruppe Pna2 1 Dimensionen der Elementarzelle a = 17,2(3) Å, α = 90 b = 10,6(2) Å, β = 90 c = 17,9(4) Å, γ = 90 V [Å 3 ] 3256.2(11) Z 4 ρ ber [kg m 3 ] 2214,2 μ [mm 1 ] 0,546 Absortpionskorrektur numerisch F (000) 2088 Bereich der Indices 20 h 20, 11 k 12, 21 l 20 Messbereich θ 3,05 bis 24,71 Temperatur [K] 193 Diffraktometer Typ Rigaku Spider unabhängige Reflexe [I > 2σ(I)] 7303 Datenpunkte / Beschränkung / Parameter 5543 / 146 / 671 GOOF 2,606 finaler R1 [I > 2σ(I)] 0,1281 finaler wr2 0,3583 Größter Rest-Reflex [e Å -3 ] 0,929 Größtes Rest-Loch [e Å -3 ] 0,670

Tabelle 3: Atomkoordinaten (x 10 4 ) und äquivalente isotrope Auslenkungsparameter (Å 2 x 10 3 ) für (3). U(eq) ist definiert als 1/3 der Spur des orthogonalisierten U ij Tensors. x y z U(eq) C 148(3) 111(5) 2470(5) 384(17) Cl(1) 397(3) 1121(5) 2414(4) 169(2) Cl(2) 962(2) 98(6) 2910(3) 109(2) Cl(3) 94(4) 1443(4) 2100(4) 131(2) CA 106(3) 65(5) 2225(6) 114(7) Cl(1A) 228(5) 1317(7) 2648(3) 224(5) Cl(2A) 943(3) 79(6) 1805(3) 113(2) Cl(3A) 410(3) 1214(5) 2146(4) 125(2) Al(1) 2547(1) 661(1) 4852(1) 30(1) O(1) 2496(2) 2259(3) 4863(5) 86(2) O(2) 3031(3) 221(6) 5608(3) 82(2) O(3) 3009(3) 123(5) 4059(2) 65(1) O(4) 1625(2) 54(3) 4844(3) 57(1) C(5) 3458(3) 107(4) 6200(3) 63(2) C(6) 4276(3) 586(4) 6028(3) 166(7) F(10) 4672(4) 342(7) 5674(4) 292(8) F(11) 4217(3) 1657(5) 5599(3) 110(2) F(12) 4633(4) 905(8) 6691(4) 308(6) C(7) 3287(3) 800(4) 6946(3) 132(5) F(13) 2553(3) 556(7) 7073(4) 243(3) F(14) 3740(4) 323(8) 7476(3) 255(5) F(15) 3414(4) 2012(6) 6822(4) 241(4) C(8) 3567(3) 1255(5) 6453(3) 195(5) F(16) 3612(3) 2049(5) 5885(4) 235(5) F(17) 2950(4) 1582(7) 6861(3) 261(5) F(18) 4184(3) 1423(9) 6881(4) 431(5) C(6A) 4166(5) 839(5) 5873(3) 41(6) F(10A) 4524(5) 6(7) 5314(4) 22(3) F(11A) 4336(13) 2029(7) 5476(6) 500(80) F(12A) 4839(5) 889(9) 6380(5) 27(3) C(9) 3483(2) 95(3) 3442(3) 60(2) C(10) 4315(3) 685(4) 3538(3) 131(6) F(19) 4261(4) 1670(6) 3935(4) 189(4) F(20) 4679(5) 214(8) 3847(5) 431(14) F(21) 4542(5) 907(8) 2872(4) 313(4)

C(11) 2936(3) 910(4) 2928(3) 230(5) F(22) 2990(4) 697(7) 2203(3) 232(4) F(23) 2178(3) 920(7) 3047(3) 137(2) F(24) 3143(5) 2117(5) 2999(3) 162(3) C(12) 3501(3) 1346(5) 3238(3) 325(7) F(25) 3627(4) 1966(9) 3875(4) 273(6) F(26) 4112(4) 1401(8) 2778(4) 385(5) F(27) 2849(4) 1689(8) 2903(3) 254(4) C(10A) 3940(3) 1366(6) 3401(3) 27(7) F(19A) 4144(6) 1899(12) 4040(5) 52(7) F(20A) 3374(7) 1900(18) 3016(7) 410(110) F(21A) 4482(8) 760(20) 3021(8) 1100(500) C(13) 1082(2) 858(4) 4895(2) 60(2) C(14) 1178(2) 1850(5) 4250(3) 154(4) C(15) 260(3) 230(4) 4852(2) 103(3) C(16) 1157(2) 1562(4) 5675(3) 162(4) F(28) 912(4) 1422(8) 3629(3) 304(4) F(29) 809(3) 2862(5) 4432(5) 187(4) F(30) 1896(2) 2167(5) 4153(3) 117(2) F(31) 159(4) 419(5) 5472(3) 156(2) F(32) 282(2) 1100(5) 4810(4) 146(2) F(33) 172(3) 545(4) 4288(3) 99(2) F(34) 1243(3) 693(6) 6194(3) 177(4) F(35) 570(3) 2260(7) 5842(4) 230(4) F(36) 1787(4) 2246(5) 5639(4) 149(3) C(1) 2189(2) 3427(4) 4848(2) 43(1) C(2) 1484(3) 3454(4) 4282(2) 167(6) F(1) 1665(5) 2556(6) 3708(3) 197(5) F(2) 853(3) 3067(6) 4752(5) 150(4) F(3) 1424(4) 4726(6) 4011(4) 160(3) C(3) 2827(3) 4409(5) 4595(3) 300(20) F(4) 2630(3) 5539(4) 4773(4) 124(3) F(5) 3478(3) 4128(5) 4898(4) 122(3) F(6) 2883(6) 4312(10) 3877(3) 258(7) C(4) 1899(3) 3734(5) 5666(3) 372(12) F(7) 1580(4) 2734(6) 5934(3) 144(3) F(8) 2493(4) 4058(7) 6053(4) 175(5) F(9) 1398(4) 4636(6) 5642(5) 162(3) C(2A) 1894(3) 4006(5) 4144(3) 54(6)

F(1A) 1426(5) 3089(7) 3685(5) 46(3) F(2A) 2110(9) 4891(9) 3515(6) 2000(800) F(3A) 1216(5) 4772(9) 4438(6) 57(4) C(3A) 2772(4) 4322(5) 5137(3) 86(10) F(4A) 2693(12) 5615(8) 5002(5) 430(50) F(5A) 3271(8) 3795(13) 4604(6) 230(20) F(6A) 3071(9) 4126(12) 5852(5) 86(5) C(4A) 1527(3) 3476(5) 5375(4) 41(5) F(7A) 2022(5) 2866(8) 5835(8) 183(15) F(8A) 906(5) 2752(9) 5208(8) 80(5) F(9A) 1313(8) 4604(10) 5657(12) 350(40) Unit cell representation showing the packing of 1 and omitting all C(CF 3 ) 3 groups as well as the disordered sites.

4. UV-Vis Spectra To assign the UV-Vis Spectra the MO-Diagram of CX 3 was calculated at the BP86/SV(P) level and the UV-Vis spectra were calculated by TD-DFT/BP86/SV(P): e a 1 Lumo a 2 a 2 Homo e e a 2 e Calculated [a] UV/Vis-Bands at lowest energy for CX 3 and BX 3 (X= Cl, Br, I), experimental values in parentheses. Bande /nm CI 3 CBr 3 CCl 3 BI 3 BBr 3 BCl 3 a 231 (274) [b] 176 137 198 143 115 b 309 (307) [b] 214 159 233 167 133 c 384 (349) [b] 291 231 293 (313) [c] 224 (206) [d] 183 (172) [d] [a] TD-DFT at b-p/sv(p), [b] from Ref. [45], [c] from Ref. [85], [d] from Ref. [86].

a b c Absorption a b c Experiment CCl 3 [Al(pftb) 4 ] UVsim CCl 3 a b c Experiment CBr 3 [al-f-al] UVsim CBr 3 UVsim CI 3 0 50 100 150 200 250 300 350 400 450 500 550 600 Wellenlänge / nm Experimental UV/Vis-Spectra of (1) and (4), calculated (b-p86/sv(p)) spectra of the CX 3 -cations. The small hard edge at 350 nm is attributed to the automatic change of the lamps. 5. Quantum chemical calculations Calculated energies (DFT-pbe0 and MP2) for the reactions CCl 3 SO 2 SO 2 -CCl 3 and SO 2 ClF- CCl 3 SO 2 SO 2 ClF SO 2 -CCl 3 : Molecule Method / basis set Symmetry U (0 K) [kj/mol] H (273 K) [kj/mol] G (273 K) [a] [kj/mol] G solv (SO 2 ClF, 273 K) [a] [kj/mol]] ZPE [a] [kj/mol] CCl 3 pbe0/def2-tzvpp D 3 h -3722716,5-3722682,0-3722765,2-3722835,1 22,44 SO 2 pbe0/def2-tzvpp C 2 v -1439853,7-1439825,5-1439898,6-1439896,7 18,39 SO 2 ClF pbe0/def2-tzvpp C s -2909768,0-2909716,9-2909807,7-2909803,9 36,19 SO 2 -CCl 3 pbe0/def2-tzvpp C 1-5162604,7-5162537,8-5162667,7-5162731,8 42,62 SO 2 ClF-CCl 3 pbe0/def2-tzvpp C 1-6632516,7-6632428,3-6632574,7-6632636,7 60,01 CCl 3 MP2/def2-TZVPP D 3 h -3719741,4-3719706,9-3719790,1-3719860,0 22,44 SO 2 MP2/def2-TZVPP C 2 v -1438663,2-1438635,0-1438708,1-1438706,1 18,39 SO 2 ClF MP2/def2-TZVPP C s -2907448,7-2907397,6-2907488,4-2907484,6 36,19 SO 2 -CCl 3 MP2/def2-TZVPP C 1-5158447,8-5158380,9-5158510,8-5158574,9 42,62 SO 2 ClF-CCl 3 MP2/def2-TZVPP C 1-6627233,0-6627144,5-6627290,9-6627352,9 60,01 [a] Thermodynamic corrections based on pbe0/def2-tzvpp calculations (scaling factor: 0.97). Cartesian MP2/def2-TZVPP minimum geometries of all calculated compounds:

CCl 3 : 0.00000000000000 0.00000000000000 0.00000000000000 c 1.55054201525109-2.68561754968513 0.00000000000000 cl 1.55054201525109 2.68561754968513 0.00000000000000 cl -3.10108403050219 0.00000000000000 0.00000000000000 cl SO 2 : 0.00000000000000 0.00000000000000-0.91888645907061 s -2.36595548460867 0.00000000000000 0.45944322953530 o 2.36595548460867 0.00000000000000 0.45944322953530 o SO 2 ClF: -0.00000101043026 0.11778210567373 0.38011017526731 s -2.36511469870708 0.20671099244038 1.62749784249890 o 2.36510983693370 0.20671260657701 1.62750325848896 o 0.00000160859211 2.26379106992375-1.62546095025312 f 0.00000426361152-2.79499677461488-2.00965032600207 cl SO 2 -CCl 3 : -0.89774898012440 2.65848409084441 0.01213488168651 c 1.48480768680809 3.95317120942842 1.51322327912202 cl -3.59736467779822 2.23672264479068 1.47501583917103 cl -0.60022241621298 1.84404100467930-2.96167903601570 cl 1.46847295512593-4.36289461335804 0.43524681350015 s 1.44412158990354-4.22017406322224-2.29682240113980 o 0.69793384229807-2.10935027316243 1.82288062367576 o SO 2 ClF-CCl 3 : -2.46052245535481 3.04963343972875-1.46721983404705 c -0.29482447426454 4.63731651199350-3.01452660704475 cl -3.43065330350026 4.05596106977011 1.29935128149783 cl -3.69590725737754 0.49440007063355-2.70903859862743 cl 1.68349772605222-2.33818373709006 1.03642171214235 s 0.07892505069130-3.96349306602907-0.36249674256716 o 1.38302727999467 0.34280771943466 0.92772844658651 o 5.24202157170150-3.19786081152316 0.44426800741452 cl 1.49443586205749-3.08058119691832 3.84551233464512 f

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