Synthesis, characterization, and catalytic activity of a ruthenium carbene complex coordinated with bidentate 2-pyridine-carboxylato ligands
Synthesis, characterization, and catalytic activity of a ruthenium carbene complex coordinated with bidentate 2-pyridine-carboxylato ligands
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DOI：
10.1016/j.jorganchem.2005.07.060
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发表时间：
2005-12-01
影响因子：
2.3
通讯作者：
Fröhlich, R
中科院分区：
文献类型：
--
作者：
Hahn, FE;Paas, M;Fröhlich, R
由卡宾配合物 [(sIMeS)(PCy3)(Cl)(2)Ru=CHPh] (4) 和银合成了带有两个二齿 2-吡啶羧基配体的不含卤化物和膦的配合物 [(sIMes)(C5H4N-2-CO2)(2)Ru=CHPh] (7) (sIMes = 1,3-二甲咪唑烷-2-亚基) 2-吡啶-羧酸酯(8)。八面体配合物7的分子结构揭示了两个羧基官能团以顺式几何结构与钌中心配位。在二氯甲烷和甲醇溶液中添加助催化剂 (HCl) 后，催化剂 7 在闭环复分解 (RCM) 反应中表现出活性。 (c) 2005 Elsevier B.V. 保留所有权利。
The halide and phosphine free complex [(sIMes)(C5H4N-2-CO2)(2)Ru=CHPh] (7) (sIMes = 1,3-dimesitylimidazolidin-2-ylidene) bearing two bidentate 2-pyridinecarboxylato ligands was synthesized from the carbene complex [(sIMeS)(PCy3)(Cl)(2)Ru=CHPh] (4) and the silver 2-pyridine-carboxylate (8). The molecular structure of the octahedral complex 7 reveals that the two carboxylato functions are coordinated in cis geometry to the ruthenium center. Catalyst 7 exhibits activity in ring-closing metathesis (RCM) reactions after addition of a cocatalyst (HCl) in dichloromethane as well as in methanol solution. (c) 2005 Elsevier B.V. All rights reserved.