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

The 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., [(η 6 ‐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 NH 4 BF 4 results the formation of mononuclear complexes of the formulation [(η 6 ‐arene)Ru( L )Cl]BF 4 [arene = C 6 H 6 ( 1 ), C 10 H 14 ( 2 ), C 6 Me 6 ( 3 )] and [Cp* M ( L )Cl]BF 4 [ M = Rh ( 4 ); Ir ( 5 )]. All these complexes are characterized by micro analyses, IR, and 1 H 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.