A versatile V-shaped tetracarboxylate building block for constructing mixed-ligand Co(ii) and Mn(ii) complexes incorporating various N-donor co-ligands
| Autor: | Dong-Sheng Li, Cai-Xia Meng, Xiao-Ning Zhang, Xiao-Ming Gao, Long Tang, Feng Fu, Ya-Pan Wu, Miao Du |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Ethylene
Hydrogen bond Chemistry Stereochemistry Stacking Supramolecular chemistry General Chemistry Condensed Matter Physics Hydrothermal circulation Metal chemistry.chemical_compound Crystallography visual_art visual_art.visual_art_medium Antiferromagnetism General Materials Science Thermal stability |
| Zdroj: | CrystEngComm. 12:1227-1237 |
| ISSN: | 1466-8033 |
| Popis: | Hydrothermal reactions of 3,3′,4,4′-diphenylsulfonetetracarboxylic dianhydride with Co(II) or Mn(II) acetate and systematically varied N-donor co-ligands leads to the formation of a series of supramolecular complexes, namely, [Co(H2dpstc)(trpy)·H2O] (1), [Co2(dpstc)(phen)2·4H2O]·2H2O (2), [Mn2(dpstc) (phen)2·5H2O] (3), [Mn2(dpstc)(bipy)2·3H2O]·H2O (4) and [Mn2(dpstc)(bpe)2·2H2O]·2H2O (5), where dpstc = 3,3′,4,4′-diphenylsulfonetetracarboxylate, trpy = 2,2′:6′,2′′-terpyridine, phen = 1,10-phenthro- line, bipy = 2,2′-bipyridine and bpe = 1,2-di(4-pyridyl)ethylene. Single-crystal X-ray analysis reveals that complex 1 shows a simple 1D linear array, 2 exhibits a unique 1D chain with pendant arms, and 3 displays a binuclear core. Interestingly, such 1D or dimeric coordination motifs in 1–3 hold the recognition sites of hydrogen bonding and/or π–π stacking, which result in the extended 3D architectures. In contrast, complexes 4 and 5 represent a 2D (4,4) layer and a 3D 4-connected (64·82) framework, respectively. By careful inspection of the structures for 1–5, it is clear that the tetracarboxylate with different coordination modes as well as the auxiliary N-donor ligands play a critical role in determining the coordination array and further packing modes of the final 3D lattice architectures. Magnetic susceptibilities of complexes 1–5 reveals the weak antiferromagnetic exchange interactions between the adjacent metal centers and their thermal stability has also been studied. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|