Publication Date:
2014-10-20
Description:
Four Co II /Ni II coordination polymers, namely, [ M (H 3 L) 2 (H 2 O) 2 ] n ( 1 , 2 ) and [ M (H 2 L)(H 2 O) 3 ] n ( 3 , 4 ), ( M = Co for 1 and 3 , M = Ni for 2 and 4 , H 4 L = terphenyl-2,2′,4,4′-tetracarboxylic acid) were synthesized through hydrothermal reactions at different pH values and structurally characterized. Single crystal X-ray crystallographic analysis reveals that compounds 1 and 2 are isostructural and exhibit a 1D [ M 2 (H 3 L) 2 ] n loop-like infinite chain, whereas compounds 3 and 4 are also isostructural and show a 1D pendant H 2 L attached [ M (H 2 O)] n chain motif. Additionally, variable-temperature magnetic susceptibility measurement shows weak antiferromagnetic coupling among the adjacent central Co II atoms in 1 and 3 .
Print ISSN:
0044-2313
Electronic ISSN:
1521-3749
Topics:
Chemistry and Pharmacology
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