Hexacyanometallate anions as precursors of two new trinuclear heterobimetallic assemblies: Syntheses,structures and cryomagnetic properties |
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| Authors: | Brajagopal Samanta Joy Chakraborty RK Bhubon Singh Manas K Saha Stuart R Batten Paul Jensen M Salah El Fallah Samiran Mitra |
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| Institution: | 1. Department of Chemistry, Jadavpur University, Kolkata 700 032, West Bengal, India;2. Department of Chemistry, Nagaland University, Mokokchung 798 601, Nagaland, India;3. School of Chemistry, Monash University, P.O. Box 23, 3800 Victoria, Australia;4. Departamento de Química Inorgánica, Universitat de Barcelona, Martí i Franquees, 1-11, 08028 Barcelona, Spain |
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| Abstract: | Two new cyano bridged Cu–Co and Cu–Fe trinuclear bimetallic assemblies, (CuL)Co(CN)6](CuL)]ClO4 · 3.5H2O (1) and (CuL)Fe(CN)6](CuL)] · 13H2O (2) where L = (3E,5E)-N1,N4-bis((pyridin-2-yl)methylene)butane-1,4-diamine] have been prepared using cyanometallates as anion precursors and characterised by elemental analyses, spectroscopic studies, single crystal X-ray diffraction and cryomagnetic susceptibility measurements. Magneto-structural correlations have been drawn from cryomagnetic susceptibility measurements over a wide temperature range (2–300 K) under 0.5 T magnetic fields. Weak antiferromagnetic interactions with J = −0.81 and −0.73 cm−1 are found for 1 and 2, respectively, showing a very weak coupling, as expected from the diamagnetic long chain –NC–Co–CN–CN– and –NC–Fe–CN–CN– bridges revealed from the single crystal X-ray diffraction studies. |
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| Keywords: | Heterobimetallic Cu&ndash Co Cu&ndash Fe Cyano bridge X-ray structures Antiferromagnetic |
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