14, M = Ge). Oxidizing reagents, e.g., sulfur, pyridine-N-oxide, and 1-azidoadamantane, reacted with divalent tin 6 on the phosphorus ligands exclusively, preserving the divalent state of tin in the resultant compounds Sn[−O−C(CF3)2CH2P(S)tBu2]2 (7), Sn[−O−C(CF3)2CH2P(O)tBu2]2 (11) and Sn[−O−C(CF3)2CH2PtBu2],[−O−C(CF3)2CH2P(N3-Adamantyl)tBu2]2 (12). The divalent germanium compound 14 was found to be
一种空间庞大的螯合膦t Bu 2 P-CH 2 -C(CF 3)2 OH(1)可稳定二价
锡和
锗化合物:M [-OC-C(CF 3)2 CH 2 P t Bu 2 ] 2(6,M = Sn;14,M = Ge)。氧化试剂(例如
硫,
吡啶-N-氧化物和1-
叠氮金刚烷)仅与
磷配体上的二价
锡6反应,从而在所得化合物Sn [-OC-C(CF 3)中保留
锡的二价状态。2 CH 2 P(S)t Bu 2 ] 2(7),Sn [-O-C(CF 3)2 CH 2 P(O)t Bu 2 ] 2(11)和Sn [-OCC(CF)3)2 CH 2 P t Bu 2 ],[-OC(CF 3)2 CH 2 P(N 3-
金刚烷基)t Bu 2 ] 2(12)。二价
锗化合物14发现更容易氧化为四价态。例如,与1-
叠氮金刚烷的反应得到四价
锗化合物Ge [-OC(CF 3)2 CH 2 P(-)t Bu],[-OC(CF 3)2