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. Hz, 1 (s, p-CH(NPh)), 12.0 (d+sat, 1 J P,C = 75.0 Hz, 1 J Sn,C = 296, Hz, CH 2 P), -7.4 (d+sat, 3 J P,C = 1.5 Hz, 1 J Sn,C = 362.0 Hz, Sn(CH 3 ) 3 )

P. , H. Nmr-j-p, P. =. , and H. Nmr-2h, PPh 2 ), Hz, P III ), 0.8 (d, 2 J P,P = 48.5 Hz, pp.1-23

2. Hz, 13 C NMR (C 6 D 6 ) ): 1 152

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P. and H. Nmr, 9 (s); 1 H NMR (CDCl 3 ): 1 7

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. Calcd-for-23c, C, 50.89; H, 3.38; N, 2.47. Found: C, 49.22; H, 4.82

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. Ni, O(3)-C(27) 1.439(4) O(3)-C(30) 1.441(4) O(3)-Li(1) 1.915(6) N(1)-C(19) 1, Li(1) 1.893(5) O(2)-C(23) 1.437(4) O(2)-C(26) 1.439(4) O(2)-Li(1) 1.915) 1.415(4) C(2)-C(3) 1.381(4) C(2)-H(2) 0.9500 C(3)-C(4)) C(5)-H(5) 0.9500 C(7)-C(8) 1.)-C(10) 1.371(4) C(9)-H(9) 0.9500 C(10)-C(11) 1.392(4) C(10)-H(10) 0.9500 C(11)-C(12) 1.382(4) C(11)-H(11) 0.9500 C(12)-H(12) 0, pp.12-13

. Ni, ) 1.971(3) Ni(1)-P(2) 2.321(1) P(1)-N(1) 1.616(4) P(1)-C(1) 1.796(4) P(1)-C(7) 1.815(4) P(1)-C(13) 1, ) P(2)-C(29) 1.822(4) P(2)-C(23) 1, pp.400-406

. Sb, Sb(1)-F(1) 1, ) C(55)-C(56) 1.50(1) C(55)-H(55A) 0.9800 C(55)-H(55B) 0, p.9800