THE STRUCTURE OF HYDRATED LEAD(II) DIMETHYLACETATE, [PB-6(O2CCH(CH3)(2))(12)]4H(2)O - A HEXANUCLEAR CARBOXYLATE

Hydrated lead(II) dimethylacetate forms hexanuclear units [Pb-6(O-2-CC H(CH3)(2))(12)]14H(2)O in the solid state consisting of a ring of four lead atoms linked by oxygen atoms belonging to chelated carboxylates, with two further lead atoms linked to the ring by bridging carboxylat e oxygens. Water molecules are coordinated to four lead atoms. There a re pairs of Pb atoms with 7, 6 and 5-fold coordination in the molecula r unit. The hexanuclear molecularity is retained in solution but Pb-20 7 NMR measurements indicate different 5-coordinate sites are formed. C opyright (C) 1996 Elsevier Science Ltd