A novel three-dimensional coordination polymer involving Pb-Pb interactions and three different hemidirected lead(II) coordination spheres: X-ray crystal structure of tris(1,10-phenanthroline-kappa N-1,kappa N-10)-bis[{mu(3)-[5-(sulfo-kappa O)benzene-1,3-dicarboxylate(3-)-kappa O-1,kappa O-1 ': kappa O-2,kappa O-2 ':kappa O-2]}trilead (Pb-Pb) trihydrate ([Pb-3(phen)(3)(H2O)(2)(sip)(2)](n) center dot 3 H2O)

A novel 3D polymeric Pb-II complex involving three different hemidirected Pb-II coordination spheres, [Pb-3(phen)(3)(H2O)(2)(sip)(2)](n)center dot 3H(2)O (phen=1,10-phenanthroline and sip= 5-sulfoisophthalate=5-sulfobenzene-1,3-dicarboxylate), was synthesized and characterized by elemental analysis and IR spectroscopy. Its single-crystal X-ray structure shows three types of Pb2+ ions with coordination number six for Pb(1) and seven for Pb(2) and Pb(3). Two of the lead atoms, Pb(1) and Pb(3), are involved in Pb-Pb interactions.