The pH dependent phase transfer of an organometallic complex: synthesis, characterization, and crystal structure of a W(0) tetracarbonyl with an acidic pyridine-imine ligand

被引：24
|
作者：
Buffin, BP [1 ]
Squattrito, PJ [1 ]
Ojewole, AO [1 ]
机构：
[1] Western Michigan Univ, Dept Chem, Kalamazoo, MI 49008 USA
来源：
INORGANIC CHEMISTRY COMMUNICATIONS | 2004年 / 7卷 / 01期
关键词：
pyridinylimine ligand; Tungsten(0) complex; water-soluble complex; phase transfer;
D O I：
10.1016/j.inoche.2003.09.015
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Reaction of the asymmetrical pyridine-imine ligand L (where L = benzoic acid, 3-[(2-pyridinylmethylene)amino]) with W(CO)(3)(EtCN)(3) and CO (g) affords a W(0) tetracarbonyl in which the Schiff-base ligand coordinates in a bidentate fashion. The complex was characterized by IR, NMR, and UV-visible spectroscopy and elemental analysis. The solid-state structure of W(CO)(4)(L), which crystallized in the orthorhombic space group Pbca with unit cell parameters a = 22.497(4) Angstrom, b = 14.112(6) Angstrom, and c = 13.675(3) Angstrom was established by X-ray crystallography. Deprotonation of the -CO2H group on the ligand with base results in the formation of a water-soluble organometallic complex which can be partitioned between organic and aqueous phases in a biphasic system by pH adjustment. (C) 2003 Elsevier B.V. All rights reserved.
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页码：14 / 17
页数：4
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