Acta Cryst. (2007). E63, m3042-m3043  [ doi:10.1107/S1600536807057868 ]

Bis(-4-hydroxybenzoato-²O:O')bis[(2,9-dimethyl-1,10-phenanthroline-²N,N')(4-hydroxybenzoato-²O,O')lead(II)]

P.-Z. Zhao, X.-P. Xuan and Q.-H. Tang

Abstract: In the centrosymmetric binuclear title complex, [Pb₂(C₇H₅O₃)₄(C₁₄H₁₂N₂)₂], each Pb^II ion is coordinated by two N atoms from a 2,9-dimethyl-1,10-phenanthroline (dmphen) ligand and four O atoms from three 4-hydroxybenzoate anions in a distorted octahedral environment. The 4-hydroxybenzoate groups coordinate to each Pb^II atom in two different ways. Two 4-hydroxybenzoate ions behave as chelating ligands to a single Pb atom, and the other two form bridges between the two Pb atoms, forming a centrosymmetric eight-membered ring in the binuclear structure. Molecules are linked into a two-dimensional framework by O-HO hydrogen bonds. The packing is further stabilized by - interactions between the dmphen rings of neighboring molecules, with a distance of 3.327 Å between the planes of the dmphen ligands.

Online 21 November 2007

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