Pentamethylcyclopentadienyl vanadium oxo dichloride

This synthesis is a modified version of one given in the literature.13 To Mo(CO)6 (8.0 g, 30.3 mmol) (contained in a 500-mL flask, with side arm, equipped with a stirring bar) is added under argon, 200 mL of n-decane which 

The product [(j75-C5Me5)Mo(CO)n]2 is a mixture of the compounds with n = 2 and 3.13 It is not necessary to separate the mixture, since the oxidation described below proceeds with loss of CO. The mixture is moderately air sensitive, but may be stored in an inert atmosphere. The H NMR spectrum of the mixture (200 MHz, CDC13 solution) shows singlets at 1.92 and 1.89 ppm. The infrared spectrum (Nujol mull) shows v(CO) absorption bands at 1925, 1895, 1870, and 1827 cm 1. 

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