“…B NMR (CD 3 CN): d = À37.3 (d, 1 J BH = 142 Hz, B1), À28.5 (d, 1 J BH = 132 Hz, B10), À25.5 (d, 1 J BH = 140 Hz, B6), À22.3 (d, 1 J BH = 150 Hz, B4), À18.2 (m, B3), À17.6 (m, B11), À14.6 (d, 1 J BH = 150 Hz, B2), À7.5 (s, B9), À4.1 (d, 1 J BH = 139 Hz, B5); 13 C{ 1 H} NMR (CD 3 CN): d = 19.5 (CHCH 3 ), 19.6 (CHCH 3 ), 27.8 (CH 3 ), 37.6 (m, cage-CH), 50.7 (CHCH 3 ), 53.5 (m, cage-CH), 197.2 (CH 3 C-(NHiPr)S); IR: 3330 (s, n(NÀH)), 3038 (w, n(cage-CÀH)), 2969 (w, n(CÀH)), 2596 (s), 2558 (s), 2520 (s, all three n(BÀH)), 1676 (s, n(C= N)), 1563 (m), 1383 (m), 1345 (m), 1028 (m), 1016 (m), 801 (m); MS (ESIÀ): m/z 249.1 ([MÀH] À , 100 %); elemental analysis calcd (%) for C 7 H 22 B 9 NS: C 56.18, H 8.90, N 5.61, S 12.84; found: C 56.07, H 8.95, N 5.53, S 12.86. Synthesis of 10-[CH 3 C{N(CH 3 ) 2 }S]-nido-7,8-C 2 B 9 H 11(4) …”