کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1303083 | 974738 | 2009 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Novel HgII and MnII supramolecular complexes with a versatile building block 5-(4-pyridyl)-1,3,4-oxadiazole-2-thiolate involving in situ ligand formation Novel HgII and MnII supramolecular complexes with a versatile building block 5-(4-pyridyl)-1,3,4-oxadiazole-2-thiolate involving in situ ligand formation](/preview/png/1303083.png)
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.
Two novel HgII and MnII supramolecular complexes with a versatile multidentate ligand showing different isomeric styles and coordination modes are described, which notably are obtained by in situ ligand reaction from an acyclic precursor.Figure optionsDownload as PowerPoint slide
Journal: Inorganic Chemistry Communications - Volume 12, Issue 10, October 2009, Pages 1038–1041