Bing-Xin Liu

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

In the crystal structure of the title compound, [Pb2(C4H5NO4)2(C6H6N4S2)2]·4H2O, the dinuclear PbII complex molecule is centrosymmetric. The Pb atom is chelated by a tridentate iminodiacetate anion (IDA) and a diaminobithiazole (DABT) ligand, while a carboxylate 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-pentagonal-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 thiazole 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.

Tetra­aqua­(2,2′-diamino-4,4′-bi-1,3-thia­zole-κ2N3,N3′)nickel(II) bis­(pyridine-2,6-dicarboxyl­ato-κ3O2,N,O6)nickel(II) trihydrate

The crystal structure of the title compound, [Ni(C6H6N4S2)(H2O)4][Ni(C7H3NO4)2]·3H2O, consists of NiII complex cations, NiII complex anions and lattice water molecules. The NiII ions in both the complex cation and anion assume a distorted octahedral coordination geometry. O—H⋯O, N—H⋯O and C—H⋯S hydrogen bonds occur in the crystal structure.

Aqua­(2,2′-diamino-4,4′-bi-1,3-thia­zole-κ2N3,N3′)(thio­diacetato-κ3O,S,O′)nickel(II) monohydrate

In the title compound, [Ni(C4H4O4S)(C6H6N4S2)(H2O)]·H2O, the NiII cation assumes a distorted octahedral coordination geometry formed by a diaminobithiazole (DABT) ligand, a thiodiacetate (TDA) dianion and a coordinated water molecule. The tridentate TDA chelates to the Ni cation in a facial configuration, and both chelating rings display the envelope conformations. The two thiazole rings of the DABT ligand are twisted with respect to each other, making a dihedral angle of 9.96 (9)°. Extensive O—H⋯O, N—H⋯O and weak C—H⋯O hydrogen bonding is present in the crystal structure.

[(E)-But-2-enoato-κO]chlorido(2,2′-diamino-4,4′-bi-1,3-thia­zole-κ2 N 3,N 3′)zinc(II) monohydrate

In the title compound, [Zn(C4H5O2)Cl(C6H6N4S2)]·H2O, the ZnII cation is coordinated by a bidentate diaminobithiazole (DABT) ligand, a but-2-enoate anion and a Cl− anion in a distorted tetrahedral geometry. Within the DABT ligand, the two thiazole rings are twisted to each other at a dihedral angle of 4.38 (10)°. An intramolecular N—H⋯O interaction occurs. The centroid–centroid distance of 3.6650 (17) Å and partially overlapped arrangement between nearly parallel thiazole rings of adjacent complexes indicate the existence of π–π stacking in the crystal structure. Extensive O—H⋯Cl, O—H⋯O, N—H⋯Cl and N—H⋯O hydrogen bonding helps to stabilize the crystal structure.

1,2-Dimorpholinoethane-1,2-dithione

The title compound, C10H16N2O2S2, was prepared by a reaction of 4-tert-butylbenzene, morpholine and sulfur. In the crystal structure, both morpholine rings display the typical chair conformation. Weak C—H⋯O hydrogen bonding is present in the crystal structure.

2,2′-Diamino-4,4′-bi-1,3-thia­zolium bis­(3-nitro­benzoate)

In the title salt, C6H8N4S2 2+·2C7H4NO4 −, the diprotonated diaminobithiazole dication is located on an inversion center. The carboxylate group of the anion is twisted with respect to the benzene ring, with a dihedral angle of 13.6 (4)°. N—H⋯O hydrogen bonds involving the amino and ammonium groups of the dication and the carboxylate functionality of the anion generate supramolecular chains in the crystal.

Aqua-(2,2'-diamino-4,4'-bi-1,3-thia-zole-κN,N)(pyridine-2,6-dicarboxyl-ato-κO,N,O)zinc tetra-hydrate.

The title compound, [Zn(C7H3NO4)(C6H6N4S2)(H2O)]·4H2O, assumes a distorted octahedral coordination geometry around the Zn2+ cation, formed by a diaminobithiazole (DABT) molecule, a pyridine-2,6-dicarboxylate anion and a water molecule. The pyridine-2,6-dicarboxylate anion chelates to the ZnII atom with a facial configuration. Within the chelating DABT ligand, the two thiazole rings are twisted by a dihedral angle of 14.52 (8)° with respect to each other. O—H⋯O and N—H⋯O hydrogen bonds occur in the crystal structure.

Aqua­(2,2′-diamino-4,4′-bi-1,3-thia­zole-κ2 N 3,N 3′)(pyridine-2,6-dicarboxyl­ato-κ3 O 2,N,O 6)zinc tetra­hydrate

The title compound, [Zn(C7H3NO4)(C6H6N4S2)(H2O)]·4H2O, assumes a distorted octahedral coordination geometry around the Zn2+ cation, formed by a diaminobithiazole (DABT) molecule, a pyridine-2,6-dicarboxylate anion and a water molecule. The pyridine-2,6-dicarboxylate anion chelates to the ZnII atom with a facial configuration. Within the chelating DABT ligand, the two thiazole rings are twisted by a dihedral angle of 14.52 (8)° with respect to each other. O—H⋯O and N—H⋯O hydrogen bonds occur in the crystal structure.

Aqua­(2,2′-diamino-4,4′-bi-1,3-thia­zole-κ2N3,N3′)(pyridine-2,6-dicarboxyl­ato-κ3O2,N,O6)zinc tetra­hydrate

The title compound, [Zn(C7H3NO4)(C6H6N4S2)(H2O)]·4H2O, assumes a distorted octahedral coordination geometry around the Zn2+ cation, formed by a diaminobithiazole (DABT) molecule, a pyridine-2,6-dicarboxylate anion and a water molecule. The pyridine-2,6-dicarboxylate anion chelates to the ZnII atom with a facial configuration. Within the chelating DABT ligand, the two thiazole rings are twisted by a dihedral angle of 14.52 (8)° with respect to each other. O—H⋯O and N—H⋯O hydrogen bonds occur in the crystal structure.

Aqua­bis­(3,5-dimethyl-1H-pyrazole-κN2)(oxydiacetato-κ3O,O′,O′′)copper(II) dihydrate

In the title compound, [Cu(C4H4O5)(C5H8N2)2(H2O)]·2H2O, the CuII cation assumes a distorted octahedral coordination geometry formed by two 3,5-dimethyl-1H-pyrazole ligands, one oxydiacetate (ODA) dianion and one coordinated water molecule. The tridentate ODA ligand chelates to the Cu cation in a facial configuration with a longer Cu—O bond [2.597 (3) Å], and both chelating rings display envelope conformations. In the molecule, the two pyrazole rings are twisted with respect to each other at a dihedral angle of 57.5 (3)°. Extensive intermolecular O—H⋯O and N—H⋯O hydrogen bonding is present in the crystal structure.