Diaquabis(2-pyridylphosphonatoN-oxide-κ2O1,O2)cobalt(II)

Abstract

In the title complex, [Co(C5H5NO4P)2(H2O)2], the CoII ion, which lies on a crystallographic inversion center, is coordin­ated by four O atoms from two bidentate 2-phospho­nato­pyridine N-oxide ligands and two O atoms from two water ligands in a slightly distorted octa­hedral environment. Mol­ecules are inter­linked by three O—H⋯O hydrogen bonds and one weak C—H⋯O inter­action, forming a three-dimensional supra­molecular structure.