Syntheses and Spectroscopic Studies of [Cp2ZrR]2Fe(CO)4

摘要

Hydrocarbon solution of Cp2Zr(CH3)Cl react rapidly with Na2Fe(CO)4 (1/2 equiv.) to yield [Cp2Zr(CH3)]2Fe(CO)4 and NaCl. The more soluble metal-metal bonded complex [Cp2ZrC8H17]2Fe(CO)2 has also been prepared through the reaction of Cp2Zr(C8H17)BF4 and Na2Fe(CO)4 (1/2 equiv.). The complexes were characterized by IR, 1H NMR, 13C NMR, and elemental analysis. The infrared spectrum of [Cp2ZrR]2Fe(CO)4 shows four bands, which is indicative of a cis-structure. The 13C NMR spectrum provides evidence for the cis-structure.