The cyanato and thiocyanato derivatives of Bis(cyclopentadienyl)titanium(IV) and Bis(cyclopentadienyl)zirconium(IV)

Abstract

The cyclopentadienyl metal compounds, cp₂Ti(NCO)₂, cp₂Ti(NCS)₂, cp₂Zr- (NCO)₂, and cp₂Zr(NCS)₂, have been prepared and the modes of attachment of the cyanato and thiocyanato ligands determined by infrared spectroscopy. All are bonded to the metals through nitrogen and are therefore isocyanato and isothiocyanato derivatives. Cp₂Zr(NCO)₂ is sensitive to moisture which converts it into the bridged oxide cp₂Zr(NCO)-O-Zr(NCO)cp₂. This reaction can be reversed with anhydrous cyanic acid.