首个中心带有一个硒原子的离散型Zn4四面体：[Zn4(μ4-Se)[Se2P(OPr)2]6]的x射线结构与溶液研究

The first, discrete Zn4 tetrahedron with a selenium atom in the center: x-ray structure and solution study of [Zn4(mu4-Se)[Se2P(OPr)2]6].

作者信息

Santra Bidyut Kumar, Hung Chiu-Mine, Liaw Ben-Jie, Wang Ju-Chun, Liu C W

机构信息

Department of Chemistry, Chung Yuan Christian University, Chung-Li, Taiwan 320, ROC.

出版信息

Inorg Chem. 2004 Nov 29;43(24):7570-2. doi: 10.1021/ic048791j.

DOI:10.1021/ic048791j

PMID:15554615

Abstract

The first discrete, selenium-centered tetranuclear zinc cluster [Zn4(mu4-Se)[Se2P(OPr)2]6] was isolated and characterized. The cluster consists of six edge-bridged dsep ligands with four zinc atoms in a slightly distorted tetrahedron and a mu4-Se atom in the center. In addition, 12 mu2-bridging selenium atoms form a Se12 icosahedron. From variable-temperature 31P NMR studies, it was observed that the cluster [Zn4(Se)[Se2P(OPr)2]6] is partly decomposed to [Zn[Se2P(OPr)2]2] and the monomeric species [Zn[Se2P(OPr)2]2] is further in equilibrium with its dimer [Zn[Se2P(OPr)2]2]2.

摘要

首个离散的、以硒为中心的四核锌簇合物[Zn4(μ4-Se)[Se2P(OPr)2]6]被分离并表征。该簇合物由六个边桥联的dsep配体组成，四个锌原子呈轻微扭曲的四面体排列，中心有一个μ4-Se原子。此外，12个μ2-桥联硒原子形成一个Se12二十面体。通过变温31P NMR研究观察到，簇合物[Zn4(Se)[Se2P(OPr)2]6]部分分解为[Zn[Se2P(OPr)2]2]，且单体物种[Zn[Se2P(OPr)2]2]与其二聚体[Zn[Se2P(OPr)2]2]2进一步处于平衡状态。