Accommodation of the irregular coordination geometry of lead(II) by a square planar N2S2 ligand and its preference for zZinc(II)

被引：13

作者：

Golden, ML ^{[1
]}

Reibenspies, JH ^{[1
]}

Darensbourg, MY ^{[1
]}

机构：

[1] Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA

来源：

INORGANIC CHEMISTRY | 2004年 / 43卷 / 19期

关键词：

D O I：

10.1021/ic049489d

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The N2S2 ligand, bis-mercaptoethanediazacyclooctane, coordinates to Pb(II) largely through sulfur donors, enlisting a second unit to fulfill an irregular, hemispherical N2S3 coordination environment in which a void suggests the location of a stereochemically active lone pair on Pb(II). That the highly exposed lead is vulnerable to metal ion displacement is demonstrated on reaction with zinc which results in a regular square pyramidal coordination about zinc within a [N2S2Zn](2) dimer. Analysis of the two dimeric structures finds different connectivities of the monomeric subunits account for the stability of the zinc structure over that of the lead.

引用

页码：5798 / 5800

页数：3

共 18 条

[1]

AGRE VM, 1971, ZH STRUKT KHIM, V12, P102

[2]

BUONOMO RM, 1996, THESIS TEXAS A M U

[3] Bismercaptoethanediazacyclooctane as a N2S2 chelating agent and Cys-x-Cys mimic for Fe(NO) and Fe(NO)2 [J].