Coordination studies of 1,2-bis(diphenylphosphino)ethane with di-μ-hydroxo dinuclear complexes of tungsten(IV) and molybdenum(IV)•

被引：0

作者：

Minato, Makoto ^{[1
]}

Ito, Takashi ^{[1
]}

Ren, Jian-Guo ^{[2
]}

机构：

[1] Yokohama Natl Univ, Grad Sch Engn, Dept Chem Mat, Hodogaya Ku, 79-5 Tokiwadai, Yokohama, Kanagawa 2408501, Japan

[2] Shanxi Univ, Dept Chem, Taiyuan 030006, Peoples R China

来源：

JOURNAL OF THE SERBIAN CHEMICAL SOCIETY | 2016年 / 81卷 / 01期

关键词：

molybdenocene; tungstenocene; dinuclear complexes; dppe; AQUEOUS-SOLUTION; ORGANOMETALLIC CHEMISTRY; MOLECULAR-STRUCTURE; MOLYBDOCENE; WATER; REDUCTION; EXCHANGE;

D O I：

10.2298/JSC150501066M

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The new trifluoroethoxo phosphine complexes [Cp2M(eta(1)-dppe)-(CF3CH2O)](+) and [Cp-2(CF3CH2O)M(mu-dppe)MCp2(CF3CH2O)](2+) (M = Mo or W, Cp = eta-C5H5 and dppe = Ph2PCH2CH2PPh2) have been prepared by reaction of cationic di-mu-hydroxo dinuclear complex of molybdenocene or tungstenocene [Cp2M(mu-OH)2MCp(2)](2+) with dppe. From the 1H and 31P NMR data, the configurations of the products could be assigned. Furtheremore, X-ray crystallography was used to definitively identify one of the product [Cp2(CF3CH2O)Mo(mu-dppe)MoCp2(CF3CH2O)](2+), which crystallizes in space group P21/c(#14) with a = 12.230(5) A, b = 11.149(5) A, c = 28.966(7) A, beta = 101.07(3), V = 3876(2) A3, and Z = 2. It was ascertained that the amount of dppe added to the reaction mixture could influence the product distribution. A mechanism involving initial replacement of the hydroxo ligand by the alkoxo group followed by nucleophilic attack of the phosphine is proposed on the basis of the reaction profile.

引用

页码：47 / 55

页数：9

共 31 条

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