Spectral and Structural Studies of Platinum Group Metal Complexes of3‐(Di‐2‐Pyridylaminomethyl)Benzamide and Formation of Mutual Intermolecular Hydrogen Bonding in Some Complexes

Abstract

AbstractThe new ligand, 3‐(di‐2‐pyridylaminomethyl)benzamide, L, which carries two different coordination sites, i.e. the primary amide moiety on one side and a di‐2‐pyridylamine unit as a strong chelating group on the other side is synthesized. Reaction of chloro‐bridged dimers viz., [(η6‐arene)Ru(μ‐Cl)Cl]2 and [Cp*M(μ‐Cl)Cl]2 with two equivalents of the ligand L in methanol followed by the addition of NH4BF4 results the formation of mononuclear complexes of the formulation [(η6‐arene)Ru(L)Cl]BF4 [arene = C6H6 (1), C10H14 (2), C6Me6 (3)] and [Cp*M(L)Cl]BF4 [M = Rh (4); Ir (5)]. All these complexes are characterized by micro analyses, IR, and 1H NMR spectroscopic analyses and finally by single crystal XRD study of some representative complexes. Complexes 3 and 5 show mutual intermolecular hydrogen bonding by amide–amide interactions.