Magnetic properties of asymmetric Co(II) dimer at low temperatures
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2007
Authors
Lazarov, Nenad Đ.Spasojević, Vojislav
Matić, Vladimir M.
Kusigerski, Vladan
Guillot, Maurice
Article (Published version)
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Magnetic properties of the dinuclear cobalt complex [Co-2(ox)tpmc](ClO4)(2)center dot 3H(2)O have been studied from the magnetization data obtained in the high magnetic field-low temperature experiments (B LT = 20 T, 2.2 K LT = T LT = 29 K). An excellent agreement between experimental and calculated data for all experimental temperatures was achieved within the framework of the isolated Ning Co(II) pairs in the ground state, where each cobalt ion from the pair was situated in a differently distorted octahedral environment (asymmetric dimer). The obtained values for g-factors (g(a) and g(b)), and for the intracluster exchange integral J/k(B) = (-16.0 +/- 0.5) K confirm both the previous results on the crystal structure of the complex under consideration and the assumption on the strong antiferromagnetic coupling between cobalt ions realized by the superexchange interaction over the asymmetric oxalato bridge.
Keywords:
transition metal complex / exchange and superexchange / ising model / high field magnetizationSource:
Revue Roumaine de Chimie, 2007, 52, 11, 1027-1031Collections
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VinčaTY - JOUR AU - Lazarov, Nenad Đ. AU - Spasojević, Vojislav AU - Matić, Vladimir M. AU - Kusigerski, Vladan AU - Guillot, Maurice PY - 2007 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3493 AB - Magnetic properties of the dinuclear cobalt complex [Co-2(ox)tpmc](ClO4)(2)center dot 3H(2)O have been studied from the magnetization data obtained in the high magnetic field-low temperature experiments (B LT = 20 T, 2.2 K LT = T LT = 29 K). An excellent agreement between experimental and calculated data for all experimental temperatures was achieved within the framework of the isolated Ning Co(II) pairs in the ground state, where each cobalt ion from the pair was situated in a differently distorted octahedral environment (asymmetric dimer). The obtained values for g-factors (g(a) and g(b)), and for the intracluster exchange integral J/k(B) = (-16.0 +/- 0.5) K confirm both the previous results on the crystal structure of the complex under consideration and the assumption on the strong antiferromagnetic coupling between cobalt ions realized by the superexchange interaction over the asymmetric oxalato bridge. T2 - Revue Roumaine de Chimie T1 - Magnetic properties of asymmetric Co(II) dimer at low temperatures VL - 52 IS - 11 SP - 1027 EP - 1031 UR - https://hdl.handle.net/21.15107/rcub_vinar_3493 ER -
@article{ author = "Lazarov, Nenad Đ. and Spasojević, Vojislav and Matić, Vladimir M. and Kusigerski, Vladan and Guillot, Maurice", year = "2007", abstract = "Magnetic properties of the dinuclear cobalt complex [Co-2(ox)tpmc](ClO4)(2)center dot 3H(2)O have been studied from the magnetization data obtained in the high magnetic field-low temperature experiments (B LT = 20 T, 2.2 K LT = T LT = 29 K). An excellent agreement between experimental and calculated data for all experimental temperatures was achieved within the framework of the isolated Ning Co(II) pairs in the ground state, where each cobalt ion from the pair was situated in a differently distorted octahedral environment (asymmetric dimer). The obtained values for g-factors (g(a) and g(b)), and for the intracluster exchange integral J/k(B) = (-16.0 +/- 0.5) K confirm both the previous results on the crystal structure of the complex under consideration and the assumption on the strong antiferromagnetic coupling between cobalt ions realized by the superexchange interaction over the asymmetric oxalato bridge.", journal = "Revue Roumaine de Chimie", title = "Magnetic properties of asymmetric Co(II) dimer at low temperatures", volume = "52", number = "11", pages = "1027-1031", url = "https://hdl.handle.net/21.15107/rcub_vinar_3493" }
Lazarov, N. Đ., Spasojević, V., Matić, V. M., Kusigerski, V.,& Guillot, M.. (2007). Magnetic properties of asymmetric Co(II) dimer at low temperatures. in Revue Roumaine de Chimie, 52(11), 1027-1031. https://hdl.handle.net/21.15107/rcub_vinar_3493
Lazarov NĐ, Spasojević V, Matić VM, Kusigerski V, Guillot M. Magnetic properties of asymmetric Co(II) dimer at low temperatures. in Revue Roumaine de Chimie. 2007;52(11):1027-1031. https://hdl.handle.net/21.15107/rcub_vinar_3493 .
Lazarov, Nenad Đ., Spasojević, Vojislav, Matić, Vladimir M., Kusigerski, Vladan, Guillot, Maurice, "Magnetic properties of asymmetric Co(II) dimer at low temperatures" in Revue Roumaine de Chimie, 52, no. 11 (2007):1027-1031, https://hdl.handle.net/21.15107/rcub_vinar_3493 .