Exploring early transition metal coordination: a synthetic and computational study of tripodal ligand complexes

Abstract

A series of early transition metal complexes supported by the tripodal ligand tris(5-cyclohexylimminopyrrol-2-ylmethyl)amine (N(pi^Cy)₃) were synthesized and characterized to investigate their structural and electronic properties. Complexes of titanium, vanadium, chromium, and molybdenum reveal diverse coordination geometries and highlight the influence of metal identity on geometry. Spectroscopic and computational analyses demonstrate predictable periodic trends in metal–ligand bond lengths. These results underscore the structural versatility of the N(pi^Cy)₃ ligand and its utility in supporting a range of early transition metal centers.