Ya-Wen Zhang

Poly[{μ2-1,2-bis­[4-(3-pyrid­yl)pyrimidin-2-ylsulfan­yl]ethane}di-μ2-cyanido-dicopper(I)]

The asymmetric unit of the title complex, [Cu2(CN)2(C20H16N6S2)]n, contains one CuI cation, one cyanide ligand and half of a centrosymmetric 1,2-bis[4-(3-pyridyl)pyrimidin-2-ylsulfanyl]ethane (bppe) ligand. The CuI atom displays a trigonal coordination geometry, being surrounded by one C atom from one cyanide anion and two N atoms from one cyanide and one bppe ligand. In the complex, each cyanide anion links two CuI atoms in a bis-monodentate mode into a zigzag [–Cu—CN–]n chain. Two parallel chains are linked by bppe ligands into a ladder chain.

Tris(ethyl­enediamine)zinc(II) dichloride monohydrate

The asymmetric unit of the title compound, [Zn(C(2)H(8)N(2))(3)]Cl(2)·H(2)O, contains a discrete [Zn(C(2)H(8)N(2))(3)](2+) cation with a distorted octa-hedral geometry around Zn, two uncoordinated chloride ions and one water mol-ecule. The crystal structure exhibits N-H⋯O, N-H⋯Cl and O-H⋯O hydrogen bonds.

catena-Poly[[triaqua­zinc(II)]-μ-1H-1,2,4-triazole-3,5-dicarboxyl­ato]

In the title compound, [Zn(C4HN3O4)(H2O)3]n, each ZnII atom adopts a distorted octahedral coordination geometry, being surrounded by one chelating and one monodentate 1H-1,2,4-triazole-3,5-dicarboxylate ligand and three water molecules. Adjacent ZnII cations are linked by a 1H-1,2,4-triazole-3,5-dicarboxylate ligand in a μ2,κ3 fashion to form a chain running along the c axis. The crystal packing is stabilized by N—H⋯O, O—H⋯N and O—H⋯O hydrogen bonds.

3-(1H-Tetra-zol-5-yl)benzoic acid.

The title compound, C8H6N4O2, is a difunctional compound with a carboxylate and a tetrazole residue. In the crystal structure, molecules are linked into two-dimensional sheets by intermolecular N—H⋯O and O—H⋯N hydrogen bonds.

catena-Poly[bis­[(1,10-phenanthroline)iron(II)]-bis­(μ-5-carboxy­benzene-1,3-dicarboxyl­ato)]

The asymmetric unit of the title compound, [Fe(C9H4O6)(C12H8N2)(H2O)]n, contains one FeII cation, one 5-carboxybenzene-1,3-dicarboxylate dianion (Hbtc), one 1,10-phenanthroline (phen) ligand and one water molecule. The FeII centre displays a distorted octahedral geometry, being surrounded by one phen ligand, two μ2-O atoms of two carboxylate groups from two Hbtc ligands, one O atom from one carboxylate of another Hbtc ligand and one terminal water molecule. One carboxylate group ligates two FeII cations in a μ1,1 mode, while the other carboxylate groups bonds to only one Fe atom. The crystal structure is stabilized by O—H⋯O hydrogen bonds.

catena-Poly[manganese(II)-(μ2-3,5-di-2-pyridyl-1,2,4-triazol­ato)-μ2-formato]

Owing to the presence of crystallographic twofold rotation axes (site symmetry 2, Wyckoff letters e and f), the asymmetric unit of the title compound, [Mn(C12H8N5)(CHO2)]n, contains one-half of an MnII cation, one-half of a bpt anion (Hbpt is 3,5-di-2-pyridyl-4H-1,2,4-triazole) and one-half of a formate anion. The bpt and formate ligands occupy the same C 2 symmetry, while the MnII ion resides on another crystallographic twofold rotation axis. Each bpt ligand acts as a cis-bis-chelate to ligate two MnII ions into a one-dimensional chain running along the crystallographic 41 screw axis. Adjacent MnII ions are further bridged by a μ2-formate ligand, completing the distorted octahedral coordination geometry of the cation.

Tris{2-[4-(2-pyrid­yl)pyrimidin-2-ylsulfan­yl]eth­yl}amine

The tripodal character of the title compound, C33H30N10S3, arises from the three thioether arms surrounding a central amine N atom. The three arms have approximately the same conformation but distinct geometries in a trans–trans–cis conformation, resulting in a short pyridine–sulfanyl N⋯S distance of 4.320 (7) Å. The distances of the central N atom to the N atoms of three pyridine rings in the arms are 8.305 (7), 8.032 (7) and 5.076 (9)Å. In the crystal, molecules are joined into a three-dimensional supramolecular network via effective π–π stacking between adjacent heterocycles [centroid–centroid distances of 3.700 (3)–4.118 (4) Å between adjacent interlayer pyrimidine rings and 3.676 (4) Å between the pyridine rings].

4,4',4''-Tris(2-pyrid-yl)-2,2',2''-[(2,4,6-trimethyl-benzene-1,3,5-tri-yl)tris-(methyl-ene)tris-(sulfanedi-yl)]tripyrimidine.

The title compound, C39H33N9S3, features a mesitylene unit substituted with three thioether arms. The distances from the center of mesitylene unit to the N atoms of the three pyridine rings in the arms are 10.05 (1), 9.94 (3) and 8.79 (3) Å. The crystal structure shows weak intramolecular C—H⋯N hydrogen bonds.

(Z,Z)-N''-[Amino-(pyrazin-2-yl)methyl-ene]pyrazine-2-carbohydrazonamide.

The title compound, C10H10N8, resides on a crystallographic symmetry center and features an essentially planar molecule [r.m.s. deviation = 0.278 (1) Å]. In the C=N—N=C fragment, the C=N distance is 1.3017 (18) Å and the N—N distance is 1.403 (2) Å. In the crystal, adjacent molecules are linked by N—H⋯N hydrogen bonds into a three-dimensional network.

catena-Poly[[(1,10-phenanthroline)cadmium(II)]-μ-2-(1,3-benzimidazol-2-ylsulfan-yl)acetato-κN,O:N].

In title compound, [Cd(C9H6N2O2S)(C12H8N2)]n, the CdII atom is in a distorted tetragonal-pyramidal environment, coordinated by one chelating 1,10-phenanthroline ligand, one chelating 2-(1,3-benzimidazol-2-ylsulfanyl)acetate (bia) ligand bound through one N atom and one O atom of the carboxyl group, and one N atom from a second bia ligand. Each bia ligand acts as bridge between CdII ions, forming one-dimensional coordination polymers along [010], with a shortest Cd⋯Cd distance of 4.27 (2) Å.