Improved preparation of indenyl molybdenum(II) and tungsten(II) compounds

Oxidative addition of 1-bromo-1H-indene to [Mo(CO)3(NCMe)3] and [W(CO)3(NCEt)3] is a suitable method for preparation of the indenyl compounds [IndMo(CO)3Br] and [IndW(CO)3Br], respectively. These products were fully characterised using spectroscopic methods. Structure of [IndW(CO)3Br] was determined by single crystal X-ray diffraction analysis.