1-Chloro-methyl-1H-1,2,3-benzotriazole.

In the title compound, C(7)H(6)ClN(3), the benzotriazole ring is essentially planar with a maximum deviation of 0.0110 (15)Å, and makes a dihedral angle of 0.46 (8)° with the benzene ring. In the crystal, mol-ecules are linked through inter-molecular C-H⋯N hydrogen bonds, forming chains along the c axis.

{4-Bromo-2-[2-(piperidin-1-ium-1yl)ethyl-iminometh-yl]phenolato}diiodido-zinc(II).

In the title complex, [ZnI(2)(C(14)H(19)BrN(2)O)], the Zn(II) atom is four-coordinated by the imine N and phenolate O atoms of the Schiff base ligand and by two iodide ions in a distorted tetra-hedral coordination. In the crystal structure, mol-ecules are linked through inter-molecular N-H⋯O hydrogen bonds, forming chains running along the b axis.

Diiodido[N'-(2-methoxy-benzyl-idene)-N,N-dimethyl-ethane-1,2-diamine]zinc(II).

In the title complex, [Zn(C(12)H(18)N(2)O)I(2)], the Zn(II) ion is four-coordinated by the imine N and amine N atoms of the Schiff base ligand and by two iodide ions in a distorted tetra-hedral coordination.

{4-Bromo-2-[3-(diethyl-ammonio)propyl-imino-meth-yl]phenolato}diiodidozinc(II) methanol solvate.

In the title complex, [ZnI(2)(C(14)H(21)BrN(2)O)]·CH(3)OH, the asymmetric unit consists of a mononuclear zinc(II) complex mol-ecule and a methanol solvent mol-ecule. The compound was derived from the zwitterionic form of the Schiff base 4-bromo-2-[3-(diethyl-amino)propyl-imino-meth-yl]phenol. The Zn(II) atom is four-coordinated by the imine N and phenolate O atoms of the Schiff base ligand and by two iodide ions in a distorted tetra-hedral coordination. In the crystal structure, the methanol mol-ecules are linked to the Schiff base mol-ecules through N-H⋯O and O-H⋯O hydrogen bonds. One I atom is disordered over two positions in a 0.702 (19):0.298 (19) ratio.

Diiodido{4-nitro-2-[2-(piperidin-1-yl)ethyl-imino-meth-yl]phenolato}zinc(II).

In the title complex, [ZnI(2)(C(14)H(19)N(3)O(3))], the Zn(II) atom is four-coordinated by the imine N and phenolate O atoms of the Schiff base ligand, and by two iodide ions in a distorted tetra-hedral coordination. In the crystal structure, mol-ecules are linked through inter-molecular N-H⋯O hydrogen bonds, forming dimers.

[µ-1,1'-(Butane-1,4-di-yl)di-1H-benz-imidazole-κN:N]bis-{[N,N'-bis(car-boxy-meth-yl)ethyl-enediamine-N,N'-di-acetato-κO,O',O'',N,N']mercury(II)} methanol disolvate.

The binuclear title complex, [Hg(2)(C(10)H(14)N(2)O(8))(2)(C(18)H(18)N(4))]·2CH(3)OH, lies on an inversion center with the unique Hg(II) ion coordinated in a disorted octa-hedral environment with one Hg-N bond significantly shorter than the other two. In the crystal structure, inter-molecular O-H⋯O hydrogen bonds link complex and solvent mol-ecules into a three-dimensional network.