Synthesis, structure and properties of the mixed-ligand tungsten(II) complex [WBr2(CO)3(tmpymt)] (tmpymt = 1,4,6-trimethylpyrimidine-2-thione)
作者:Viviane A.S. Falcomer、Sebastião S. Lemos、José R.S. Politi、Gleison A. Casagrande、Ernesto S. Lang、Robert A. Burrow
DOI:10.1016/j.inoche.2009.04.025
日期:2009.6
The reaction of [WBr(CO)4}2(μ-Br)2]2 1 with 1,4,6-trimethylpyrimidine-2-thione (tmpymt) affords the air-sensitive complex [WBr2(CO)3(tmpymt)] 2. The X-ray structure of 2·C3H6O reveals that the geometry surrounding the tungsten(II) atom is best described as a distorted capped trigonal prism with a bromine atom Br(1) in the unique capping position. The other bromine atom Br(2), the (N,S)-chelate and
摘要 [WBr(CO)4}2(μ-Br)2]2 1 与 1,4,6-三甲基嘧啶-2-硫酮 (tmpymt) 反应生成空气敏感络合物 [WBr2(CO)3( tmpymt)] 2. 2·C3H6O 的X 射线结构表明,钨(II) 原子周围的几何形状最好描述为一个扭曲的带帽三角棱镜,溴原子Br(1) 位于独特的帽盖位置。另一个溴原子 Br(2)、(N,S)-螯合物和一个羰基 C(41) 占据了带帽的四边形面。该复合物还通过 IR 和 NMR 光谱进行了表征。优化的分子结构(RHF/LanL2DZ)支持实验数据。