Bis(?-imino-diacetato)bis-[(2,2'-diamino-4,4'-bi-1,3-thia-zole)lead(II)] tetra-hydrate.

ABSTRACT: In the crystal structure of the title compound, [Pb(2)(C(4)H(5)NO(4))(2)(C(6)H(6)N(4)S(2))(2)]·4H(2)O, the dinuclear Pb(II) complex mol-ecule is centrosymmetric. The Pb atom is chelated by a tridentate imino-diacetate anion (IDA) and a diamino-bithia-zole (DABT) ligand, while a carboxyl-ate O atom from an adjacent IDA anion further bridges the Pb atom with a longer Pb-O bond [2.892?(3)?Å]. The lone-pair electrons of the Pb atom occupy an axial site in the ?-penta-gonal-bipyramidal coordination polyhedron. The IDA anion displays a facial configuration: its chelating five-membered rings assume an envelope configuration. Within the DABT ligand, the two thia-zole rings are twisted relative to each other, making a dihedral angle of 9.51?(17)°. Extensive N-H?O, O-H?O and weak C-H?O hydrogen bonding helps to stabilize the crystal structure.

SUBMITTER: Du M 

PROVIDER: S-EPMC2983700 | biostudies-literature | 2010 Feb

REPOSITORIES: biostudies-literature