The phosphine (PPh2)4TTF (P4) (1) reacts with the gold(I) complexes [AuX(tht)] (X = Cl, C6F5; tht = tetrahydrothiophene) or [Au(Mes)(AsPh3)] (Mes = 2,4,6-Me3C6H2) to give tetranuclear derivatives [(AuX)4P4] (X = Cl, 2; C6F5, 3; Mes, 4). The analogous reaction starting with [Au(Trip)(AsPh3)] (Trip = 2,4,6-Pri3C6H2) provides the dinuclear derivative [(AuTrip)2P4] (5). When the phosphine P4 reacts with [Cu(MeCN)4]PF6, AgCF3SO3 or [Au(tht)2]CF3SO3 in a 2∶1 molar
ratio, complexes [M(P4)2]A (A = PF6, M = Cu, 6; A = CF3SO3, M = Ag, 7, Au, 8) are obtained, or [M2P4](CF3SO3)2}n (M = Ag, 9; Au, 10) when 1∶1 molar ratios are used instead. Visible-ultraviolet and electrochemical studies of the new complexes are reported. Two, reversible one-electron oxidations to the mono- and di-cation occur in complexes 2–10 at more positive potentials than the two reversible oxidations exhibited by the free P4 (1) ligand. The structures of 1
and 2 have been confirmed by X-ray analysis.
膦 (PPh2)4
TTF (P4) (1) 与
金(I)配合物 [AuX(tht)] (X = Cl、
C6F5;tht =
四氢噻吩)或 [Au(Mes)(AsPh3)] (Mes = 2,4,6-Me3C6H2)反应,得到四核衍
生物 [(AuX)4P4](X = Cl,2; ,3;Mes,4)。以[Au(Trip)(AsPh3)](Trip = 2,4,6-Pri3C6H2)为起点的类似反应可得到二核衍
生物[(AuTrip)2P4] (5)。当膦类化合物 P4 与 [Cu(MeCN)4]PF6、AgCF3SO3 或 [Au(tht)2]CF3SO3 以 2∶1 的摩尔比反应时,络合物 [M(P4)2]A (A = PF6,M = Cu,6;A=CF3SO3,M=Ag,7,Au,8),或者使用 1∶1 摩尔比时得到[M2P4](CF3SO3)2}n(M=Ag,9;Au,10)。报告了对这些新络合物的可见紫外光和电
化学研究。与游离 P4 (1)
配体的两种可逆氧化作用相比,络合物 2-10 在更正的电位下会发生两种单电子氧化作用,生成单阳离子和双阳离子。X 射线分析证实了 1 和 2 的结构。