(C5H5)2ZR(CO)2 and (C5H5)2Hf(CO)2, first carbonyl derivatives of zirconocene and hafnocene

Abstract

Syntheses of (C5H5)2Zr(CO)2 and (C5H5)2Hf(CO)2, as well as a more facile synthesis of (C5H5)2 Ti(CO)2,Catalytic hydrogenation of diphenylacetylene in the presence of the new carbonyls and (C5H5)2 Ti(CO)2 is examined and indicates a reduc