(6,6′-Dimethyl-2,2′-bipyridine-κ2 N,N′)diiodidozinc(II)

The complete mol­ecule of the title compound, [ZnI2(C12H12N2)], is generated by crystallograpic twofold symmetry, with the ZnII atom lying on the rotation axis. The ZnII atom is coordinated by the N,N-bidentate 6,6′-dimethyl-2,2′-bipyridine ligand and two iodide ions, resulting in a distorted ZnN2I2 tetra­hedral geometry for the metal. In the crystal, there are weak π–π contacts between the pyridine rings [centroid–centroid distance = 3.978 (3) Å]

catena-Poly[[(5,5′-dimethyl-2,2′-bi­pyridine-κ2 N,N′)cadmium(II)]-di-μ-iodido]

In the title coordination polymer, [CdI2(C12H12N2)]n, the Cd2+ ion lies on a twofold rotation axis: it is six-coordinated in a distorted cis-CdN2I4 octa­hedral geometry by two N atoms from a chelating 5,5′-dimethyl-2,2′-bipyridine ligands and four bridging iodide anions. The bridging function of the iodide ions leads to a chain structure propagating in [001]

Dichlorido(6,6′-dimethyl-2,2′-bipyridine-κ2 N,N′)zinc(II)

In the title compound, [ZnCl2(C12H12N2)], the complete mol­ecule is generated by crystallographic mirror symmetry, with the Zn atom and both chloride ions lying on the reflecting plane, yielding a distorted ZnN2Cl2 tetra­hedral coordination for the metal ion. In the crystal, there are π–π contacts between the pyridine rings [centroid–centroid distance = 3.7857 (17) Å]

Tetra­kis(6-methyl-2,2′-bipyridine)-1κ2 N,N′;2κ2 N,N′;3κ2 N,N′;4κ2 N,N′-tetra-μ-nitrato-1:2κ2 O:O′;2:3κ3 O:O′,O′′;2:3κ3 O,O′:O′′;3:4κ2 O:O′-tetra­nitrato-1κ4 O,O′;4κ2 O,O′-tetra­lead(II)

In the tetranuclear centrosymmetric title compound, [Pb4(NO3)8(C11H10N2)4], irregular PbN2O5 and PbN2O4 coordination polyhedra occur. The hepta­coordinated lead(II) ion is bonded to two bidentate and one monodentate nitrate ion and one bidentate 6-methyl-2,2′-bipyridine (mbpy) ligand. The six-coordinate lead(II) ion is bonded to one bidentate and two monodentate nitrate anions and one mbpy ligand. In the crystal, bridging nitrate anions lead to infinite chains propagating in [111]. A number of C—H⋯O hydrogen bonds may stabilize the structure

Trichlorido(5,5′-dimethyl-2,2′-bipyridine-κ2 N,N′)(methanol-κO)indium(III)

In the mol­ecule of the title compound, [InCl3(C12H12N2)(CH4O)], the InIII atom is six-coordinated in a distorted octa­hedral configuration by two N atoms from the chelating 5,5′-dimethyl-2,2′-bipyridine ligand, one O atom from a methanol molecule and three Cl atoms. In the crystal structure, inter­molecular O—H⋯Cl hydrogen bonds link the mol­ecules into chains parallel to [001]

Dichlorido(6-methyl-2,2′-bipyridine-κ2 N,N′)zinc(II)

In the mol­ecule of the title compound, [ZnCl2(C11H10N2)], the ZnII atom is four-coordinated in a distorted tetra­hedral configuration by two N atoms from the 6-methyl-2,2′-bipyridine ligand and by two Cl atoms. There are π–π contacts between the pyridine ring and the five-membered ring, and also between the pyridine rings, [centroid–centroid distances = 3.685 (3) and 3.757 (3) Å, respectively]

Di-μ-bromido-bis­[bromido(4,4′-dimethyl-2,2′-bipyridine-κ2 N,N′)mercury(II)]

The asymmetric unit of the title compound, [Hg2Br4(C12H12N2)2], contains one half-mol­ecule. The HgII atom is five-coordinated in a trigonal–bipyramidal configuration by two N atoms from the chelating 4,4′-dimethyl-2,2′-bipyridine ligand, two bridging Br and one terminal Br atom, leading to a centrosymmetric dimeric mol­ecule. There is a π–π contact between the pyridine rings [centroid-to-centroid distance = 3.756 (5) Å]

Dichlorido(6-methyl-2,2′-bipyridine-κ2 N,N′)mercury(II)

In the mol­ecule of the title compound, [HgCl2(C11H10N2)], the HgII atom is four-coordinated in a distorted tetra­hedral configuration by two N atoms from a 6-methyl-2,2′-bipyridine ligand and two Cl atoms. There is a π–π contact between the pyridine rings [centroid–centroid distance = 3.9758 (5) Å]

Dibromido(di-2-pyridylamine-κ2 N,N′)mercury(II)

In the mol­ecule of the title compound, [HgBr2(C10H9N3)], the HgII atom is four-coordinated in a distorted tetra­hedral configuration by two N atoms from the chelating di-2-pyridylamine ligand and by two Br atoms. In the crystal structure, inter­molecular N—H⋯Br hydrogen bonds link the mol­ecules into centrosymmetric dimers. There are π–π contacts between the pyridine rings [centroid–centroid distances = 3.9662 (5) and 3.9321 (4) Å]. There also exists a C—H⋯π contact between the pyridine CH group and a pyridine ring

Dichlorido(2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline-κ2 N,N′)mercury(II) acetonitrile hemisolvate

The asymmetric unit of the title compound, [HgCl2(C26H20N2)]·0.5CH3CN, contains two crystallographic­ally independent [HgCl2(C26H20N2)] mol­ecules and one acetonitrile solvent mol­ecule. The HgII atoms are four-coordin­ated in distorted tetra­hedral configurations by two N atoms from 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline ligands and two Cl atoms. The ligand ring systems are not planar. The phenyl rings are oriented at dihedral angles of 74.61 (3) and 66.00 (3)° in the two molecules. In the crystal structure, π–π contacts between phenanthroline rings [centroid–centroid distances = 3.809 (1), 3.686 (1), 3.986 (1), 3.877 (1), 3.697 (1), 3.789 (1), 3.745 (1), 3.797 (1) and 3.638 (1) Å] may stabilize the structure