Direct synthesis, crystal structures, high-field EPR, and magnetic studies of heterometallic polymers containing manganese(II) carboxylates interconnected by [Cu(en)2]2+ |
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| Authors: | Makhankova Valeriya G Beznischenko Asya O Kokozay Vladimir N Zubatyuk Roman I Shishkin Oleg V Jezierska Julia Ozarowski Andrew |
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| Institution: | Department of Inorganic Chemistry, National Taras Shevchenko University, Kyiv, Ukraine. |
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| Abstract: | Two heterometallic polymers containing cations Cu(en)2]2+ and either the Mn(mal)2(H2O)2]2- (1) or Mn2(succ)2Cl2]n2n- (2) anions (mal=malonate and succ=succinate) were investigated by X-ray crystallography, high-field electron paramagnetic resonance (EPR) spectroscopy, and magnetic susceptibility measurements. Magnetic susceptibility and EPR spectra characteristic of antiferromagnetically coupled Mn2+-Mn2+ pairs were observed in 2, and the exchange integral J=31 cm(-1) (H=JS1S2) as well as the zero-field-splitting parameter D=-3.046 cm(-1) in the triplet state of the dimanganese entity was determined. |
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