Exploring supramolecular interactions between inorganic tetrachlorometallate and organic pyridinium dication: Synthesis, characterization and structural investigations

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• 作者：Kamal Kumar Bisht ; Amal Cherian Kathalikkattil ; Suresh Eringathodi ; ^{esuresh@csmcri.org} ; ^{sureshe123@rediffmail.com}
• 关键词：Supramolecular chemistry ; Tetrachlorometallate ; Hydrogen bonding ; Pyridinium dication ; X-ray crystallography ; Organic&ndash ; inorganic hybrid
• 刊名：Journal of Molecular Structure
• 出版年：2012
• 期刊代码：62_00222860
• 类别：ch
• 出版时间：11 April, 2012
• 卷：1013
• 期：Complete
• 页码：102-110
• 文件大小：1015 K

摘要

The crystal structures of three isostructural salts 2, 3 and 4 consisting of dication (伪,伪鈥?p-xylylene-N,N鈥?bis(3-hydroxymethylpyridinium) (L²⁺)), and tetrachlorometallates, [MCl₄]^{2鈭?/sup> (M = Co(II), Zn(II) and Cu(II) in 2, 3 and 4 respectively) have been reported. Synthesized salts are well characterized by various physico-chemical techniques such as CHN analysis, IR, TGA, DSC, NMR, PXRD and single crystal X-ray diffraction. The crystal lattice of complex 2 is constructed from two types of interactions viz., C-H鈰疌l and O-H鈰疌l H-bonding between the pyridinium dication and the complex anions [CoCl₄]2鈭?/sup>, whereas only C-H鈰疌l interaction was found to play major role in stabilizing the structures of organic inorganic hybrid complexes 3 and 4. The hierarchy of intermolecular interactions present in solid state, factors controlling the adopted structures of these compounds and their thermal stability are discussed in detail by using various analytical techniques including single crystal X-ray.}