Ligand Influence on Metal Aggregation: a Unique Bonding Mode for Pyridylpyrrolides

被引：17

作者：

Andino, Jose G.

Flores, Jaime A.

Karty, Jonathan A.

Massa, Joseph P.

Park, Hyunsoo

Tsvetkov, Nikolay P.

Wolfe, Robert J.

Caulton, Kenneth G. ^{[1
]}

机构：

[1] Indiana Univ, Dept Chem, Bloomington, IN 47405 USA

来源：

INORGANIC CHEMISTRY | 2010年 / 49卷 / 17期

基金：

美国国家科学基金会;

关键词：

COMPLEXES; COPPER(I);

D O I：

10.1021/ic100878s

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The synthesis and characterization of a Cu-I complex with a cis-bidentate monoanionic nitrogenous ligand, 2-pyridylpyrrolide, L, is reported. This shows binding of one base B = MeCN or CO per copper in a species LCu(B), but this readily releases the volatile ligand under vacuum with aggregation of transient LCu to a mixture of two enantiomers of a chiral trimer: a zwitterion containing inequivalent Cu-I centers, possible via a new bonding mode of pyridylpyrrolide, and one with nitrogen lone pairs donating to two different metals. Density functional theory calculations show the energetics of both ligand binding and aggregation (including dimer and monomer alternatives), as well as the ability of this ligand to rotate away from planarity to accommodate a bridging structural role. The trimer serves as a synthon for the simple fragment LCu.

引用

收藏

页码：7626 / 7628

页数：3

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