Unsymmetric Mononuclear and Bridged Dinuclear CoIII(cyclam) Acetylides

被引：19
作者：
Cook, Timothy D. [1 ]
Fanwick, Phillip E. [1 ]
Ren, Tong [1 ]
机构：
[1] Purdue Univ, Dept Chem, W Lafayette, IN 47906 USA
来源：
ORGANOMETALLICS | 2014年 / 33卷 / 18期
基金：
美国国家科学基金会;
关键词：
STRUCTURAL-ANALYSIS; MOLECULAR WIRES; PI INTERACTIONS; ONE-DIMENSION; COMPLEXES; CARBON; CHEMISTRY; POLYMERS; CHAINS;
D O I：
10.1021/om401231j
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Reported herein are the preparation and characterization of a new trans-bis(acetylide) complex of Co-III (cyclam) (cyclam = 1,4,8,11-tetraazacyclotetradecane) bearing two different acetylide ligands (1) and the first example of an all-carbon (C-4) bridged dinuclear Co species (2). Structural features of monomeric 1 and dimeric 2 are similar to those of the previously reported Co-III(cyclam) bis(acetylides), and the C C and C-C bond lengths of the butadiynediyl bridge in 2 conform to the acetylenic resonance form. The Co centers in the bridged complex 2 do not exhibit a measurable electronic coupling, as revealed by voltammetric measurements, and this behavior is rationalized through the DFT analysis of complexes 1 and 2.
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页码：4621 / 4624
页数：4
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