Hydrogen bonds in crystals of HO-(N∩N′)M(CO)3L complexes: chains, dimers and an unexpected hexamer

Abstract

Complexes of the type [HO-(N∩N′)]M(CO)₃L (M = Cr, Mo, W; L = CO, CNtBu) have been prepared and characterised and their crystal structures have been determined by X-ray crystallography. The aggregation of the complexes in the solid state follows general patterns due to the formation of multiple hydrogen bonds giving infinite chains, dimers and a cyclic hexamer. The hydrogen bonding in the solid state is also detected and analysed by IR spectroscopy and corroborated by DFT calculations.