Solvent‐Dependent cis/trans Isomerism at the Paddlewheel Mo2 Core of Linear Tetranuclear Clusters of MoII and CuI Supported by 6‐(Diphenylphosphanyl)pyridin‐2‐olate (pyphos)
Solvent‐Dependent cis/trans Isomerism at the Paddlewheel Mo2 Core of Linear Tetranuclear Clusters of MoII and CuI Supported by 6‐(Diphenylphosphanyl)pyridin‐2‐olate (pyphos)
复制标题
6-(二苯基膦酰基)吡啶-2-油酸酯 (pyphos) 支持的 MoII 和 CuI 线性四核簇的桨轮 Mo2 核心的溶剂依赖性顺/反异构现象
DOI:
10.1002/ejic.201000896
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发表时间:
2010
影响因子:
2.3
通讯作者:
K. Mashima
中科院分区:
文献类型:
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作者:
K. Pal;Keisuke Nakao;K. Mashima
The treatment of [Mo 2 (pyphos) 4 ] (1) (pyphos = 6-diphenyl-phosphanyl-2-pyridonate) with [Cu(NCCH 3 ) 4 ](PF 6 ) in CH 2 Cl 2 and CH 3 CN mixed solvent (1:5 v/v) led to the formation of a linear tetranuclear cluster, cis-[Mo 2 {Cu(NCCH 3 ) 2 ]-[(pyphos) 4 ](PF 6 ) 2 (cis-2a-PF 6 ), as a thermodynamic product that was structurally characterized as a tetrakis[3,5-bis(trifluoromethyl)phenylborate] salt (cis-2a-BArF). In the solid-state structure of cis-2a-BArF, the Mo 2 core was bridged by two O-N chelating pyphos ligands in a cis fashion, in sharp contrast to a trans fashion in 1. The trans isomer (trans-2b-PF 6 ) was isolated from a noncoordinating solvent such as CH 2 Cl 2 and structurally characterized. The transformation from trans-2b to cis-2a proceeded in acetonitrile by means of an intramolecular rearrangement of the paddlewheel Mo 2 core upon dissolution in acetonitrile, in which the coordinating solvent stabilizes the transient, coordinatively unsaturated Mo 2 core upon the release of the pyridonate moiety from the Mo 2 core; whereas the reverse reaction did not occur under any trial conditions. A further substitution reaction at the Cu center of cis-2a-PF 6 and trans-2b-PF 6 with Et 4 NCl afforded cis-3a and trans-3b, respectively, which have the molecular formula [Mo 2 (pyphos) 4 Cu 2 (Cl) 2 ]. Compounds trans-3a and cis-3b do not show any solvent-dependent interconversion phenomena by changing the solvent.
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DOI:
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发表时间:
2009
期刊:
Inorganic Chemistry 48
影响因子:
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作者:
Fujiwara;S;岩渕真木子;岩渕真木子;岩渕真木子;岩渕 真木子;岩渕 真木子;Kazushi Mashima
通讯作者:
Kazushi Mashima
影响因子:
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作者:
Eri Goto;R. Begum;Shu-zhong Zhan;T. Tanase;K. Tanigaki;K. Sakai
通讯作者:
Eri Goto;R. Begum;Shu-zhong Zhan;T. Tanase;K. Tanigaki;K. Sakai
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