Organophosphonic Acids as Complexones. Part-VII. Divalent Metal Derivatives of 1 -Aminoethylidenediphosphonic Acid and 1 -Aminobenzylidenediphosphonic Acid

Department of Chemistry, Kurukshetra University, Kurukshetra-132 119 Reactions of 1-aminoalkylidene-/arylidenediphosphonic acids with bivalent metal salts, MnII, CoII, NiII, CuII, ZnII, CdII and PbII yielded solid products of general formula M2L.xH2O, in which metal is hexa-coordinated as has been inferred from their electronic spectra. Coordination sites have been established from infrared studies. Subnormal magnetic moment values and other physical properties suggest them to be polymeric in nature