Acta Crystallographica Section C

Crystal Structure Communications

Volume 62, Part 2 (February 2006)

metal-organic compounds

 

Dichloro[(3,5-dimethyl-1H-pyrazol-1-yl)methane]zinc(II) and di--chloro-bis{chloro[(3,5-dimethyl-1H-pyrazol-1-yl)methane]cadmium(II)}

M.-L. Cheng, H.-X. Li, Y. Zang and J.-P. Lang

Abstract: The Zn atom in dichloro[(3,5-dimethyl-1H-pyrazol-1-yl)methane]zinc(II), [ZnCl₂(C₁₁H₁₆N₄)], (I), is tetrahedrally coordinated by two N atoms from one bis(3,5-dimethylpyrazolyl)methane ligand and two terminal Cl atoms. The molecule has no crystallographic symmetry. One H atom of the CH₂ group of the bis(3,5-dimethylpyrazolyl)methane ligand interacts with a Cl atom of an adjacent molecule to yield intermolecular C-HCl contacts, thereby forming a one-dimensional zigzag chain extending along the b axis. On the other hand, in di--chloro-bis{chloro[(3,5-dimethyl-1H-pyrazol-1-yl)methane]cadmium(II)}, [Cd₂Cl₄(C₁₁H₁₆N₄)₂], (II), each of the two crystallographically equivalent Cd atoms is pentacoordinated by two N atoms from one bis(3,5-dimethylpyrazolyl)methane ligand, and by one terminal and two bridging Cl^- anions. The molecule has a crystallographic centre of symmetry located at the mid-point of the CdCd line. One H atom of the CH₂ group of the bis(3,5-dimethylpyrazolyl)methane ligand interacts with a Cl atom of an adjacent molecule to produce pairwise intermolecular C-HCl contacts, thereby affording chains of molecules running along the c axis.

Formula: [ZnCl₂(C₁₁H₁₆N₄)] and [Cd₂Cl₄(C₁₁H₁₆N₄)₂]

	Structure factor file (CIF format) (161.5 kbytes) [ doi:10.1107/S0108270106001387/gd1428Isup2.hkl ] Contains datablock I
	Structure factor file (CIF format) (127.5 kbytes) [ doi:10.1107/S0108270106001387/gd1428IIsup3.hkl ] Contains datablock II

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