Structure of a cis-dimetalla-alkene complex formed by the reaction of a ruthenium(II) complex with bis(phenylethynyl)mercury(II)
作者:Zbigniew Dauter、Roger J. Mawby、Colin D. Reynolds、David R. Saunders
DOI:10.1039/dt9860000433
日期:——
X-Ray investigation of the product of the reaction of trans-[Ru(CO)2Cl2(PMe2Ph)2] with Hg(CCPh)2shows it to be [Ru(CO)2C(CCPh)C(Ph)HgCl}Cl(PMe2Ph)2]. The proposed mechanism involves formation on the ruthenium of 1,4-diphenylbuta-1,3-diyne, and cis addition of an Ru–HgCl bond across one of the triple bonds of the diyne. The mass spectrum of the complex indicates that this addition is reversed on heating
对反式-[Ru(CO)2 Cl 2(PMe 2 Ph)2 ]与Hg(C CPh)2反应的产物的X射线研究表明其为[Ru(CO)2 C(C CPh )C(Ph)HgCl} Cl(PMe 2 Ph)2 ]。拟议中的机制涉及在钌上形成1,4-二苯基丁1,3-二炔,并通过二炔的三键之一顺式添加Ru-HgCl键。配合物的质谱表明,这种加成在加热时会逆转,并释放出二炔。相关复合物[Ru(CO)2 C(C CCMe 3以相同方式制备的)C(CMe 3)HgCl} Cl(PMe 2 Ph)2 ],即使在室温下,也能在溶液中缓慢分解,释放出Me 3 CC C-C CCMe 3并沉积汞。