Structural study of metal complexes of bisphosphonate amide ester: copper, magnesium, zinc and cadmium complexes of (dichloromethylene)bisphosphonic acid P-piperidinium-P′-methyl ester
Abstract
Four metal complexes of (dichloromethylene)bisphosphonic acid P-piperidinium-P′-methyl ester were prepared and their crystal structures determined by X-ray single-crystal diffraction. The complexes were [{Cu3(CH3PO3CCl2PO2NC5H10)3(H2O)2}(H2O)3]2 (1), [(MgCH3PO3CCl2PO2NC5H10)(H2O)3]n (2), [{NaZn1.5(CH3PO3CCl2PO2NC5H10)2(H2O)2}(H2O)]n (3) and [{Cd(CH3PO3CCl2PO2NC5H10)(H2O)3}(H2O)]n (4). The methyl ester of the