Publication Date:
2014-03-14
Description:
The coordination polymer [Cd(HL)(BPDA)] n · n H 2 O ( 1 ) based on 3-(5-(pyridin-4-yl)-1 H -1,2,4-triazol-3-yl)pyridine (HL) and 1,1′-biphenyl-4,4′-dicarboxylic acid (H 2 BPDA) was hydrothermally synthesized and characterized by single-crystal X-ray diffraction, XRPD, IR spectroscopy, and elemental analysis. The asymmetric unit of compound 1 consists of one crystallographically independent Cd II ion, one HL ligand, “two half” BPDA 2– ligand, and one lattice water molecule. There are two crystallographically different BDPA 2– moieties, but each of them is placed in a symmetry element. The BPDA 2– ligands and Cd II ions connected to2D sheet, and the 2D sheets are connected to a 3D MOF by the HL ligands. Each dimeric Cd II unit links six nearest neighbors through the BPDA 2– and HL ligands, and the dimeric Cd II units are centrosymmetric. Two parallel HL ligands connect two dimeric Cd II units, generating long Cd2–HL–Cd2–HL rings, also centrosymmetric. So we can define the dimeric Cd II unit as a 6-connected node. Thus, the 3D structure can be described as a threefold parallel interpenetrated bsn beta-Sn topology. In addition, the optical properties of compound 1 and the free ligand H L were investigated.
Print ISSN:
0044-2313
Electronic ISSN:
1521-3749
Topics:
Chemistry and Pharmacology
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