Monosubstituted arylimido hexamolybdates containing pendant amino groups: synthesis and structural characterization

Abstract

Three novel rigid-rod conjugated organic-POM hybrids (1, 2 and 3) containing pendant amino terminus, with different rod lengths and different substituents on the rod, have been respectively synthesized via one-pot reaction of hexamolybdate and the corresponding aromatic diamine (for 1 and 2) and reaction of octamolybdate and the corresponding aromatic diamine dihydrochloride (for 3) with N,N′-dicyclohexylcarbodiimide (DCC) as a dehydrating agent. These complexes have been characterized by UV/Vis, IR, ¹H NMR, ESI and single-crystal X-ray diffraction techniques. The influences of the rod length and substituents on the properties of these compounds have been systematically investigated, which provide necessary information for further preparations of complicated hybrid materials via reactions with pendant amino groups.