Summary
Four novel manganese(II) binuclear complexes have been prepared and characterized, namely [Mn2(TCPHTA)(L)4]-(ClO4)2 [where L is 2,2′-bipyridyl (bipy), 1,10-phenanthroline (phen), 4,4′-dimethyl-2,2′-bipyridyl (Me2bipy) or 5-nitro-1,10-phenanthroline (NO2-phen) and TCPHTA is the tetrachlorophthalate dianion]. Based on i.r. spectra, elemental analyses, conductivity measurements, extended tetrachlorophthalato-bridged structures consisting of two manganese(II) ions in which each manganese(II) ion has a distorted octahedral environment are proposed for these structures. The temperature dependence of the magnetic susceptibility for [Mn2(TCPHTA)(phen)4]-(ClO4)2·H2O was measured over the 4–300 K range and the observed data were successfully simulated by an equation based on the spin Hamiltonian operator (Ĥ = −2JŜ 1·Ŝ 2), giving the exchange integralJ = −1.05 cm−1. This result is indication of a weak antiferromagnetic spin exchange interaction between the metal ions.
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Qi, Y.Q., Miao, M.M., Sun, X.R. et al. Synthesis and magnetism of tetrachlorophthalato-bridged manganese(II) binuclear complexes. Transition Met Chem 20, 270–272 (1995). https://doi.org/10.1007/BF00143490
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DOI: https://doi.org/10.1007/BF00143490