Reduction of a coordinated acetonitrile ligand: Synthesis of an ethylimido complex of tungsten

被引：19

作者：

Field, LD ^{[1
]}

Jones, NG ^{[1
]}

Turner, P ^{[1
]}

机构：

[1] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia

来源：

ORGANOMETALLICS | 1998年 / 17卷 / 12期

关键词：

D O I：

10.1021/om970829v

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Treatment of the dinitrogen complex W(N-2)(2)(dppe)(2) (1; dppe = 1,2-bis(diphenylphosphino)ethane) with trifluoromethanesulfonic acid yields the novel hydrazido complex [W(N2H2)(oTf)(dppe)(2)](+)[oTf](-) (2; OTf = CF3SO3-). The triflato ligand is readily displaced by other ligands and coordinating solvents. The triflato complex 2 yields the complex [W(N2H2)(NCCH3)(dppe)(2)](2+) (5), when it is dissolved in acetonitrile, and 5 is readily deprotonated by a variety of bases to give the acetonitrile-dinitrogen complex W(N-2)(NCCH3)(dppe)(2) (3). Complex 3 is protonated at the beta-carbon by tetrafluoroboric acid, resulting in the reduction of the coordinated nitrile to give the novel imido complex [WF(NCH2CH3)(dppe)(2)](+)[BF4](-)(4). The X-ray crystal structure of the imido complex 4 reveals an effectively linear W-N-C bond (171.8 degrees) in the imido ligand with a W-N bond length of 1.741(4) Angstrom.

引用

页码：2394 / 2398

页数：5

共 49 条

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