Bis(μ-iminodiacetato)bis[(2,2′-diamino-4,4′-bi-1,3-thiazole)lead(II)] tetrahydrate
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چکیده
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 Ψ-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.
منابع مشابه
Bis(2,2′-diamino-4,4′-bi-1,3-thiazole-κ2 N 3,N 3′)bis(nitrato-κO)lead(II) dihydrate
In the title compound, [Pb(NO(3))(2)(C(6)H(6)N(4)S(2))(2)]·2H(2)O, the Pb(II) cation is N,N'-chelated by two 2,2'-diamino-4,4'-bi-1,3-thia-zole (DABT) ligands and further is cis coordinated by two nitrate anions in a distorted PbN(4)O(2) octa-hedral geometry. One of the uncoordinated water mol-ecules is close to an inversion center and is disordered equally over two sites. Intra-molecular N-H⋯N...
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In the title coordination polymer, [CdBr(2)(C(8)H(8)N(2)S(2))](n), the Cd(II) atom is six-coordinated in a distorted octa-hedral geometry by two N atoms from a 2,2'-dimethyl-4,4'-bi-1,3-thia-zole ligand and four bridging Br atoms. The bridging function of the Br atoms leads to a chain structure along [100]. Inter-chain C-H⋯Br hydrogen bonds and π-π contacts between the thia-zole rings [centroid...
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