Characterisation and cryomagnetic study of a hydrothermally synthesised hydrogen bonded L–M–L type co-ordination polymer |
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| Authors: | Joy Chakraborty Brajagopal Samanta Andrei S. Batsanov Joan Ribas M. Salah El Fallah Samiran Mitra |
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| Affiliation: | (1) Department of Chemistry, Jadavpur University, Kolkata, 700 032, West Bengal, India;(2) Department of Chemistry, University of Durham, Durham, DH1 3LE, UK;(3) Departament de Química Inorgànica, Universitat de Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Spain |
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| Abstract: | A ligand–metal–ligand type co-ordination polymer [Ni (C6H12N4)(NCS)2(H2O)2] n has been synthesised under controlled hydrothermal conditions. Here 1,3,5,7-tetraazatricyclo[3.3.1]decane [or hexamethylenetetramine (hmt)] has been used as a μ-(N,N′) bidentate spacer molecule. The prepared polymeric complex has been characterised by elemental and spectral analyses. The structure has been confirmed by a single crystal X-ray diffraction study. Magneto-structural correlation has been drawn from cryomagnetic susceptibility measurements (2–300 K) which unequivocally reflects very weak magnetic spin interactions among the long distant octahedral Ni(II) metal centres mediated by hmt and weak hydrogen bonding interactions between the adjacent zigzag one-dimensional polymeric chains carrying into a two-dimensional infinite polymeric framework. |
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| Keywords: | Hydrothermal synthesis Hmt-Ni(II)-hmt 2-D polymer X-ray crystal structure Cryomagnetic study |
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