Polymeric and cyclic manganese phosphates and phosphinates: Synthesis, spectral characterization and solid-state structures

Polymeric manganese phosphinates [Mn(ppi)2(bpy)]n (1) and [Mn(ppi)2(phen)]n (2) have been obtained by treating manganese acetate with phenylphosphinic acid (ppi-H) in the presence of either 2,2′-bpy or 1,10-phen, respectively. The reaction of preformed precursor [Mn(OAc)(bpy)2](ClO4)(H2O) with phosphinic acids or phosphate diesters yield [Mn(L)(bpy)2]2(ClO4)2 (where L-H = dtbp-H = di-tert-butyl hydrogen phosphate (3), dpp-H = diphenyl hydrogen phosphate (4), dppi-H = diphenyl phosphinic acid (5), and ppi-H = phenyl phosphinic acid (6)), which are dimeric compounds. Polymers 1–2 and dinuclear cyclic compounds 3–6 have been extensively characterized by analytical and spectroscopic methods and also in each case by a single crystal X-ray diffraction study.