含氢键供体的吡唑盐桥联双核配体：其钴类似物的合成与结构

Pyrazolate-bridging dinucleating ligands containing hydrogen-bond donors: synthesis and structure of their cobalt analogues.

作者信息

Zinn Paul J, Powell Douglas R, Day Victor W, Hendrich Michael P, Sorrell Thomas N, Borovik A S

机构信息

Department of Chemistry, University of Kansas, 2010 Malott Hall, 1251 Wescoe Drive, Lawrence, Kansas 66045, USA.

出版信息

Inorg Chem. 2006 May 1;45(9):3484-6. doi: 10.1021/ic060009n.

DOI:10.1021/ic060009n

PMID:16634575

Abstract

Convergent preparative routes to new urea-pyrazolate dinucleating ligands are described. Metal complexes of these ligands have hydrogen bond donors that are proximal to the metal centers that interact with other coordinated species. This is exemplified by Co(II) dimers with Co(II)-mu-Cl-Co(II) motifs, in which the chloro ligand is involved in four intramolecular hydrogen bonds. These noncovalent interactions appear to influence the Co(II)-Cl bonds, which are unusually long, having lengths greater than 2.5 A.

摘要

描述了通往新型尿素-吡唑酸双核配体的汇聚式制备路线。这些配体的金属配合物具有靠近金属中心的氢键供体，这些金属中心与其他配位物种相互作用。具有Co(II)-μ-Cl-Co(II)基序的Co(II)二聚体就是一个例子，其中氯配体参与了四个分子内氢键。这些非共价相互作用似乎影响了Co(II)-Cl键，其键长异常长，大于2.5 Å。