In situ 5-sulfosalicylate decarboxylation or dimethylformamide hydrolysis generating supramolecular assembly architectures

Six transition-metal complexes, {[Co(4,4'-bipy)(H2O)(4)](Hbs)(2) center dot 3H(2)O}(n) (1), [Mn(4,4'-bipy)(2)(H2O)(4)](Hbs)(2) center dot 2H(2)O (2), {[Mn(HCOO)(H2O)(2)(4,4'-bipy)](2)[Mn(4,4'-bipy)(Hssal)(2)(H2O)(2)]}(n) (3), [Cd(4,4'-bipy)(2)(H2O)(4)](Hbs)(2) center dot 2H(2)O (4), {[Cd-3(CH3COO)(4)(4,4'-bipy)(4)](Hbs)(2) center dot 10H(2)O}(n) (5), and {[Cd(HCOO)(H2O)(2)(4,4'-bipy)](2)[Cd(4,4'-bipy)(Hssal)(2)(H2O)(2)]}(n) (6), have been synthesized by hydrothermal or reflux synthetic method and characterized by single-crystal X-ray diffraction, IR, elemental analysis, thermogravimetric analysis and. uorescence analysis, where Hssal(2) is doubly deprotonated 5-sulfosalicylate, Hbs is 4-hydroxybenzenesulfonate and 4,4'-bipy is 4,4'-bipyridine. The structural analyses showed that all of the six complexes are cation-anion species containing in situ synthesized ligands, Hbs or HCOO, and the former arises from the decarboxylation of 5-sulfosalicylic acid under the hydrothermal conditions. The formate anions derived from the hydrolysis of DMF. A series of supramolecular compounds show that the structural diversity is strongly associated with their properties. (C) 2009 Elsevier B.V. All rights reserved.