Bis(arene)vanadium(O) complexes as a source of vanadium(II) derivatives by both disproportionation of the [V(η6-arene)2]+ cations and oxidation. of [V(η6-arene)2]
作者:Fausto Calderazzo、Giuseppe Egidio De Benedetto、Guido Pampaloni、Cäcilia Maichle Mössmer、Joachim Strähle、Klaus Wurst
DOI:10.1016/0022-328x(93)83010-s
日期:1993.6
3349.3 Å3, Z = 4, Dc 1.523 g cm]t-3, μ 17.256 cm−1, F(000) = 1560. The vanadium(II) derivative VI2(THF)0.7 was obtained, together with [V(η6-mesitylene)2] in the reaction of [V(η6-mesitylene)2][AlI4] with THF. By reaction of [V(η6-mesitylene) 2] with CPh3X (X = Br or I) in 1,2-dimethoxyethane (DME), the dihalides of vanadium(II), [VX2(DME)2] have been isolated in good yields. The crystal and molecular
在[V(η 6 -arene)2 ] +阳离子(芳烃=苯,甲苯或均三甲苯)不相称[V(η 6 -arene)2 ]和V II化合物在醚溶剂如THF或1,2-二甲氧基乙烷(DME)。歧化程度取决于抗衡阴离子和芳烃配体的性质。此外,过滤粗反应混合物,据推测含有[V(η 6 -arene)2 ] [铝2 X 7 ]衍生物,THF,得到[V 2(μ-X)3(THF)6 [ALX 4](亚芳基=苯或甲苯; X = Cl或Br)。对于X = Cl和芳烃=甲苯,向LiI的THF溶液中添加产生[V 2(μ-Cl)3(THF)6 ] I。建立了[V 2(μ-Cl)3(THF)6 ] [AlC 4 ]的原子连通性,而[V 2(μ-Cl)3(THF)6 ] I通过X射线衍射法得到了充分表征。晶体数据:[V 2(μ-Cl)的3(THF)6 ] I:单斜晶系,空间群Ç 2 / Ç(编号15),一个25.199(8),b