Synthesis, Characterization, and Chemistry of Pentacarbonylnitrosylvanadium, V(CO)5NO, a Remarkably Reactive Relative of Hexacarbonylchromium

Article abstract of DOI:10.1021/ja00346a033

Thermally unstable, deep red-violet, and remarkably reactive V(CO)5NO has been prepared in high yields by the reaction of equimolar amounts of and in methylene chloride at -40 deg C.Also, V(CO)5NO has been isolated and characterized for the first time by mass spectra and derivative chemistry.This volatile material undergoes substitution reactions with a large variety of neutral and anionic bases at -30 to 0 deg C to provide 42 - 95percent yields of new products.These include 2, V(CO)4(NO)(PMe3), thermally unstable V(CO)4(NO)(NMe3), , <(CO)5MnV(CO)4NO>, which contains a Mn - V bond, and .The last substance is the first example of a carbonylnitrosylcyclopentadienylmetalate ion and the final member of the isoelectronic series C5H5V(NO)_3-x(CO)_x^1-x (x = 0-3) to be prepared.Attempts to synthesize Ta(CO)5NO and derivatives thereof are also described.