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Magnetostructural study of tetracoordinate cobalt(II) complexes
Affiliation:1. School of Chemical Sciences, National Institute of Science Education and Research, HBNI, Bhubaneswar 752050, India;2. Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India;3. Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad 500107, Telangana, India;1. Department of Chemistry, M. G. Mahavidyalaya, Bhupatinagar, Purba Medinipur, West Bengal, 721 425, India;2. Department of Chemistry, P. K. College, Contai, Purba Medinipur, West Bengal, 721 401, India;3. Department of Chemistry, University of Kalyani, Nadia, West Bengal, 741235, India;4. Department of Physics, Jadavpur University, Kolkata, 700032, India;1. Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, Egypt;2. Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, Egypt;3. Department of Chemistry, Faculty of Science, Cairo University, Cairo, Egypt
Abstract:
Five tetracoordinate cobalt(II) complexes of the formula [CoX2L2] have been investigated by SQUID magnetometry; X is the (pseudo)halide ligand and L is the N- or P-donor ligand. The complexes exhibit a moderate magnetic anisotropy expressed by the zero-field splitting parameter D. Its value ranges as D/hc = −13 to + 5 cm 21 −1. The value of the D-parameter increases with the angular deformation δ that measures a deviation of the X–Co–X and L–Co–L angles with respect to the ideal tetrahedron.
Keywords:
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