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

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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.

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