The coordinating ability of dithiafulvenyldiphenylphosphine (P-DTF) has been investigated with cis-W(CO)4(piperi-dine)2. As shown by the metal carbonyl complexes obtained, this redox-active vinylphosphine can act as a monodentate (P) and as a bidentate (P,S) ligand. Oxidation of cis-M(CO)4(P-DTF)2, M = Mo and W, leads to the carbon-carbon bond formation between the two coordinated dithiafulvenyldiphenylphosphines
二
硫富烯基
二苯基膦(P-DTF)的配位能力已与顺式-W(CO)4(
哌啶-丁)2进行了研究。如所获得的羰基
金属配合物所示,该氧化还原活性的
乙烯基膦可作为单齿(P)和二齿(P,S)
配体。顺式-M(CO)4(P-DTF)2的氧化,M = Mo和W,导致两个配位的二
硫代富烯酰基
二苯基膦之间形成碳-碳键。在各种氧化剂的存在下,已研究了二
硫富烯基核在M(CO)4(M = Mo,W)片段配位域中的这种
化学偶联。(BrC6H4)3NSbCl6或
AgBF4的使用可诱导形成具有
乙烯基TTF主链的五元
金属环,而
DDQ则可形成六元
金属环。合成,晶体结构,