Low temperature studies (12–293 K) of unstable species using Nujol mulls: reversible carbon monoxide ejection and carbon–hydrogen bond activation

Abstract

Infrared spectroscopic experiments using [W(CO)₆] and [(η⁵-C₅Me₅)Ir(CO)₂], which have previously been studied in gas matrices by matrix isolation spectroscopy, are presented which demonstrate that Nujol mulls can function as pseudo matrices over the temperature range 12–293 K, thereby considerably enhancing the usefulness and availability of low temperature studies of unstable species, especially for those derived from involatile precursors.