Influence of the Counteranion on the Formation of Polymeric Networks by Metal Complexes of Hexamethylenebis(acetamide)

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• 作者：Nicholas P. Chatterton ; David M. L. Goodgame ; David A. Grachvogel ; Izhar Hussain ; Andrew J. P. White ; and David J. Williams
• 刊名：Inorganic Chemistry
• 出版年：2001
• 出版时间：January 15, 2001
• 年：2001
• 卷：40
• 期：2
• 页码：312 - 317
• 全文大小：150K
• 年卷期：v.40,no.2(January 15, 2001)
• ISSN：1520-510X

文摘

An investigation into the anion dependence of the network-forming ability of metal complexes of hexamethylenebis(acetamide), CH₃CONH(CH₂)₆NHCOCH₃ (HMBA), has resulted in the X-ray characterization of the compounds[Co(HMBA)₃][Co(NCS)₄], 1, [Nd(HMBA)₃][Nd(NO₃)₆]·2CHCl₃, 2, [Co(HMBA)₃][HgCl₄], 3, and [Mn(HMBA)₃][HgBr₄]·3CHCl₃, 4. The structures of compounds 1, 3, and 4 each comprise cationic frameworks formed by thebridging action of HMBA ligands binding octahedrally to the cobalt or manganese centers and, in the cases of 3and 4, the formation of tetrahedral HgX₄^2- anions by transfer of the respective halide ions from Co or Mn to Hg.Complete anion (NO₃^-) transfer between Nd centers is also a key factor in the structure of 2, which forms acationic 3-D network of HMBA-bridged octahedrally coordinated Nd centers with occluded [Nd(NO₃)₆]^3- anions.These types of inter-metal-anion transfer, with consequent complex counteranion formation, appear to facilitatethe network-forming ability of the metal-HMBA cationic arrays.