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Molecules 2006, 11(8), 589-596; doi:10.3390/11080589
Article

Synthesis and Molecular Structures of Two [1,4-bis(3-pyridyl)-2,3-diazo-1,3-butadiene]-dichloro-Zn(II) Coordination Polymers

 and
*
Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 106, Taiwan
* Author to whom correspondence should be addressed.
Received: 5 June 2006 / Revised: 30 July 2006 / Accepted: 31 July 2006 / Published: 10 August 2006
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Abstract

Two novel coordination polymers with 3D metal-organic frameworks (MOFs) have been synthesized by reacting 1,4-bis(3-pyridyl)-2,3-diazo-1,3-butadiene (L) with zinc dichloride. Both compounds have the same repeating unit consisting of a distorted tetrahedral Zn(II) center coordinated by two chlorides and two pyridyl nitrogen atoms of two bridging bismonodentate L ligands, however, different structural conformations have been found, one forming a helical chain and the other producing a square-wave chain. The intermolecular C−H···Cl hydrogen bonds in 1 and 2 play important roles in the formation of three-dimensional coordination polymers. Compound 1 crystallized in an orthorhombic space group Pna21 with a = 7.9652(3), b = 21.4716(7), c = 8.2491(3)Å, V = 1410.81(9) Å 3 and Z = 4. Compound 2 crystallized in a monoclinic space group P21/n with a = 9.1752(3), b = 14.5976(4), c = 10.3666(3) Å , β = 98.231(2)°, V = 1374.16(7) Å 3 and Z = 4.
Keywords: Coordination Polymer; Metal-organic Framework; X-ray Crystal Structure. Coordination Polymer; Metal-organic Framework; X-ray Crystal Structure.
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Lee, G.-H.; Wang, H.-T. Synthesis and Molecular Structures of Two [1,4-bis(3-pyridyl)-2,3-diazo-1,3-butadiene]-dichloro-Zn(II) Coordination Polymers. Molecules 2006, 11, 589-596.

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