In:
Zeitschrift für Naturforschung B, Walter de Gruyter GmbH, Vol. 70, No. 10 ( 2015-10-1), p. 711-718
Abstract:
Reaction of 3,4,5,6-tetrachloro-1,2-benzenedicarboxylyic acid (1,2-H 2 BDC-Cl 4 ) with transitional metal salts at room temperature in mixed DMF/H 2 O solvent affords three complexes formulated as [Cu(1,2-HBDC-Cl 4 ) 2 (DMF) 2 ] ( 1 ), {[Cd(1,2-HBDC-Cl 4 ) 2 (H 2 O) 4 ]·2DMF} ( 2 ), and {[Ni(1,2-BDC-Cl 4 )(H 2 O) 5 ]·DMF·H 2 O} ( 3 ) (DMF = N,N-dimethylformamide). All these complexes have been characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis, and single-crystal X-ray crystallography. In 1 , the Cu II ion is four-coordinated with a square-planar geometry formed by two 1,2-HBDC-Cl 4 anions and two DMF ligands; in 2 , the Cd II ion takes an octahedral geometry coordinated by two 1,2-HBDC-Cl 4 anions and four aqua ligands; while in 3 , the Ni II ion is octahedrally coordinated by one 1,2-BDC-Cl 4 dianion and five aqua ligands. Intermolecular O–H···O hydrogen bonds and Cl···Cl (or C–H···Cl) interactions provide a significant contribution to stabilizing the three mononuclear structures in the solid state. The results suggest that structural differences among them are attributed to the influence of transition metal ions. The fluorescence of the complexes and of 1,2-H 2 BDC-Cl 4 has been investigated. No significant metal effect has been observed.
Type of Medium:
Online Resource
ISSN:
1865-7117
,
0932-0776
DOI:
10.1515/znb-2015-0027
Language:
English
Publisher:
Walter de Gruyter GmbH
Publication Date:
2015
detail.hit.zdb_id:
2078109-X
detail.hit.zdb_id:
124635-5
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