η3- and η7-Cycloheptatrienyltungsten chemistry: synthesis of [W (η5-C7H9)(η3-C7H7)(PMe3)2] and [W(η-C7H7)(η3-C7H11)(PMe3)]
Abstract
The reaction of [W(PMe3)3H6] with cycloheptatriene at 80 °C gives the compounds [W(η5-C7H9)(η3-C7H7)(PMe3)2] and [W(η-C7H7)(η3-C7H11)(PMe3)] in moderate yields. [W(η5-C7H9)(η3-C7H7)(PMe3)2] reacts with carbon monoxide giving [W(η5-C7H9)(η3-C7H7)(CO)], both of which have been characterised using two-dimensional n.m.r. spectroscopy.