Novel Hg and Mn supramolecular complexes with a versatile building block 5-(4-pyridyl)-1,3,4-oxadiazole-2-thiolate involving in situ ligand formation |
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| Authors: | Su-Zhen Zhang Zhi-Hui Zhang Cheng-Peng Li Miao Du |
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| Affiliation: | aCollege of Chemistry and Life Science, Tianjin Key Laboratory of Structure and Performance for Functional Molecule, Tianjin Normal University, Tianjin 300387, PR China;bKey Laboratory of Fine Petro-chemical Technology, Jiangsu Polytechnic University, Changzhou 213164, PR China |
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| Abstract: | Reaction of potassium N′-(pyridine-4-carbonyl)-hydrazinecarbodithioate (K+(H2L)−]) with HgII or MnII inorganic salt in the presence of 1,10-phenanthroline (phen) or 4,4′-bipyridine (bipy), yields complexes Hg(pyt)2(phen)] (1) and {Mn(pyt)2(H2O)2]·(bipy)·(H2O)2}n (2), in which the pyt ligand (Hpyt = 5-(4-pyridyl)-1,3,4-oxadiazole-2-thiol) is obtained by in situ ligand formation from the acyclic precursor K+(H2L)−]. Single crystal X-ray diffraction suggests that the pyt anionic ligands in 1 and 2 behave as thiolate and thione isomers, respectively, and display S- and μ-Npyridyl, Noxadiazole-binding fashions. Complex 1 shows a 1-D fishbone-like supramolecular array via strong aromatic stacking interactions between the discrete mononuclear coordination motifs, whereas 2 has a 2-D layered host coordination framework with the inclusion of bipy and water guests in the cavities. |
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| Keywords: | HgII and MnII complexes In situ ligand synthesis Crystal structures Supramolecular architectures Thermal stability |
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