Dithiolate tin(IV) complexes [SnMe2(SS)] (SS = 4,5-dimercapto-1,3-dithiol-2-thione, dmit; 1,2-benzene dithiolate, bdt; and 3,4-toluene dithiolate, tdt) are used as transmetallating agents in the reaction with nickel derivatives [NiBrR′(PR3)2] (R′ = mesitylene (Mes) and 2,4,6-trisisopropylphenyl (Trip), and PR3 = PPh3 and PPh2Me). The reaction results in the isolation of different complexes with a great variety of stoichiometries, including mono-, di- and trinuclear nickel complexes with the general formulae: [Ni(SS)(PR3)]2, [Ni(Mes)(SS-Mes)(PR3)], [Ni(SS-Mes)2] and [Ni3(bdt)3(PPh2Me)2], and the organic compounds dmit(Mes)}2, dmit(Trip)}2, dbt(Mes)2} and tbt(Mes)2} as a consequence of S,C- and S,S-coupling processes. In the case of [Ni(Mes)(dmitMes)(PPh2Me)], dmit(Trip)}2, [Ni3(bdt)3(PPh2Me)2] and [Ni(bdtMes)2] the X-ray analyses are also presented to confirm the proposed structures.
二
硫酸盐
锡(IV)配合物[SnMe2(SS)](SS = 4,5-二巯基-1,3-二
硫醇-2-
硫酮,dmit;1,2-苯二
硫酸盐,bdt;和 3,4-
甲苯二
硫酸盐,tdt)作为反
金属化剂,与
镍衍
生物 [NiBrR′(PR3)2] (R′=间苯(Mes)和 2,4,6-
三异丙基苯基(Trip),PR3=PPh3 和 PPh2Me)反应。反应的结果是分离出各种不同的络合物,包括单核、双核和三核
镍络合物,其通式如下:[Ni(SS)(PR3)]:[Ni(SS)(PR3)]2、[Ni(Mes)(SS-Mes)(PR3)]、[Ni(SS-Mes)2]和[Ni3(bdt)3(PPh2Me)2],以及有机化合物dmit(Mes)}2、dmit(Trip)}2、dbt(Mes)2}和tbt(Mes)2}。对于[Ni(Mes)(dmitMes)(PPh2Me)]、dmit(Trip)}2、[Ni3(bdt)3(PPh2Me)2]和[Ni(bdtMes)2],还进行了 X 射线分析,以证实所提出的结构。