Synthesis,characterisation and crystal structure of a cobalt(II)-hexamethylenetetramine coordination polymer |
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| Authors: | Peter T. Ndifon Moise O. Agwara Awawou G. Paboudam Divine M. Yufanyi Jean Ngoune Agustín Galindo Eleuterio Álvarez Aminou Mohamadou |
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| Affiliation: | 1.Coordination Chemistry Laboratory, Department of Inorganic Chemistry, Faculty of Science,University of Yaounde 1,Yaounde,Cameroon;2.Department of Chemistry,University of Buea,Buea,Cameroon;3.Département de Chimie, Faculté des Sciences,Université de Dschang,Dschang,Cameroun;4.Departamento de Quimica Inorganica,Universidad de Sevilla,Sevilla,Spain;5.íInsuto de Investigaciones Qumicas, CSIC, Universidad de Sevilla,Sevilla,Spain;6.Institut de Chimie Moléculaire de Reims CNRS UMR 6229, Groupe de Chimie de Coordination, Faculté des Sciences,Université de Reims Champagne,Ardenne,France |
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| Abstract: | A novel one-dimensional zigzag coordination polymer, dinitrodiaqua-bis(hexamethylenetetramine)cobalt(II) was synthesised and characterised, and the structure was determined by single-crystal X-ray diffraction. The compound has a chain structure with each cobalt atom covalently bonded to two nitrate ions, two water molecules and two HMTA molecules, giving a slightly distorted octahedral geometry about the cobalt atom. Each HMTA ligand uses two of its N atoms to bond to two cobalt atoms giving an approximately bent Co–HMTA–Co configuration. Each chain is hydrogen bonded through OH···N and OH···O interactions with neighbouring chains leading to an overall polymer structure. Thermal studies show significant mass loss corresponding to the loss of the coordinated water molecules and the decomposition of both the nitrate ions and the HMTA. |
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