摘要:
The reaction of 1,2-C6H4(NHCH2PPh2)(2) with chlorosilanes Cl2SiHR (R = Ph, Cl) affords the benzosiladiazoles RHSi(NCH2PPh2)(2)C6H4 (R = Ph, 1; Cl, 2). The phenyl derivative 1 undergoes chelate-assisted Si H activation with [RuPhCl(CO)(PPh3)(2)] and [RhCl(PPh3)(3)] to afford the structurally characterized silyl pincer complexes [RuCl(CO)(PPh3){kappa(3)-P,Si,P'-SiPh(NCH2PPh2)(2)C6H4}] (3) and [RhHCl(PPh3){kappa(3)-P,Si,P'-SiPh(NCH2PPh2)(2)C6H4}] (4). The reaction of 4 with [Et2NH2][S2CNEt2] affords the complex [RhH(S2CNEt2){kappa(3)-P,Si,P'-SiPh(NCH2PPh2)(2)C6H4}] (5), structural data for which demonstrate a pronounced trans influence for the alpha-silyl donor.