Syntheses,supramolecular structures and properties of six coordination complexes based on 5-sulfosalicylic acid and bipyridyl-like chelates |
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| Authors: | Jiang-Feng Song Yan Chen Zhi-Gang Li Rui-Sha Zhou Xiao-Yu Xu Ji-Qing Xu Tie-Gang Wang |
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| Institution: | 1. College of Chemistry and State Key Laboratory of Inorganic, Synthesis and Preparative Chemistry, Jilin University, Changchun, Jilin 130023, PR China;2. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China |
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| Abstract: | Six new complexes constructed by 5-sulfosalicylic acid and bipyridyl-like ligands (2,2′-bipy and 1,10-phen), namely Cu4(OH)2(ssal)2(phen)4 · 7H2O] (1), Cu4(OH)2(ssal)2(bipy)4 · 2H2O] (2), Cd(Hssal)(bipy)] (3), Cd(HL)2(phen)2] (4), Cr(ssal)(bipy)(H2O)2 · 2H2O] (5) and Cr(ssal)(phen)2] (6) (H3ssal = 5-sulfosalicylic acid, H2L = p-hydroxybenzenesulfonic acid, bipy = 2,2′-bipy, phen = 1,10-phen) were prepared under hydrothermal conditions and their structures were determined by single-crystal X-ray diffraction. Complexes 1 and 2 are both tetranuclear copper complexes with a stepped topology. In complex 3, a new coordination mode of the Hssal2− group is reported in this work. During the synthetic process of complex 4, in situ decarboxylation of 5-sulfosalicylic acid into p-hydroxybenzenesulfonic acid is involved. Two chromium 5-sulfosalicylates (5 and 6) are reported for the first time. These new complexes display different supramolecular structures by O–H?O, C–H?O hydrogen bonds as well as π?π, C–H?π and O?π interactions. The results of magnetic determination show that ferromagnetic interactions exist in complex 1, however, antiferromagnetic interactions exist in 2. |
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| Keywords: | Crystal structure Hydrothermal synthesis 5-Sulfosalicylic acid Magnetic analysis |
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