The preparation of finely divided metal powders and transition metal complexes using “organically solvated” magnesium
作者:Helmut Bönnemann、Borislav Bogdanović、Rainer Brinkmann、Bernd Spliethoff、Da-Wei He
DOI:10.1016/0022-328x(93)83004-f
日期:1993.6
Mg★ is an excellent in situ reducing agent for transition metal salts, giving highly reactive metal powders of Groups 8–12. In the presence of electron donor ligands, this reduction provides a useful one-step route to organotransition metal complexes. The application of 35 kHz ultrasound during the reaction improves the dispersity of the metal powders and enhances the yields of the complexes.
The formation of (indenyl)rhodium(diolefin) complexes is described, using bis(indenyl) magnesium. On protonation of these complexes an η5-η6 shift of the indenyl ligand is observed. The corresponding cobalt complexes are obtained by lithium reduction of bis(indenyl)cobalt in the presence of the diolefin. The bidentate ligand 1,5-cyclooctadiene is readily replaced in these complexes by carbon monoxide
描述了使用双(茚基)镁形成(茚基)铑(二烯烃)配合物。在这些配合物的质子化的η 5 -η 6茚基配体的移位是观察。相应的钴配合物是通过在二烯烃存在下双(茚基)钴的锂还原获得的。在这些配合物中二齿配体1,5-环辛二烯很容易被一氧化碳取代。所有化合物均通过13 C NMR光谱表征。
Production of transition metal complexes
申请人:Studiengesellschaft Kohle mbH
公开号:US04469638A1
公开(公告)日:1984-09-04
The invention relates to a process for the production of complex compounds of the transition metals which is characterized in that transition metals are reacted with magnesium, to which a catalytic quantity of anthracene and/or magnesium anthracene has been added as activator, in the presence of complexing ligands.