Russian Journal of Coordination Chemistry
Volume 34, Number 10, 735-738, DOI: 10.1134/S1070328408100059

Bis[7-(1,3-dioxolan-2-yl-methyl)-3,7-dihydro-1,3-dimethyl-1H-purine-2,6-dione] dichlorozinc(II) 0.47-hydrate: the role of secondary bond in forming the four-fold helix Chain

Zhi Min Jin, Gang Chen, Ya Jun Zhu and Hai Bin Wang

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Abstract

Single crystals of ZnIICl2(C11H14N4O4)2 · 0.47H2O (I) were obtained from an aqueous solution of ZnCl2 and doxofylline in a 1: 2 molar ratio, and the crystal structure was determined by single-crystal X-ray diffraction (tetragonal, space group P41, Z = 8, a = b = 14.9481(5), c = 25.4778(11) Å). In the compound I, Zn2+ cation is located at the center of a distorted tetragonal coordination polyhedron, formed by the two Cl atoms and two N atoms of doxofylline ligands. In the crystal, crystallographically independent molecules of the compound I are bonded alternatively together by Cl···N secondary bonds to form four-fold helix chain along the z axis.
Original Russian Text © Zhi Min Jin, Gang Chen, Ya Jun Zhu, Hai Bin Wang, 2008, published in Koordinatsionnaya Khimiya, 2008, Vol. 34, No. 10, pp. 744–747.
The text was submitted by the authors in English.

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