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546.71+544+547+549 (1) |
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SM ISO690:2012 MIKURIYA, Masahiro, NAGAO, Nobuyuki, KURAHASHI, Satoshi, TABUCHI, Atsushi, TOMOHARA, Seiki, TSUBOI, Motohiro, YOSHIOKA, Daisuke, SAKIYAMA, Hiroshi, FUYUHIRO, Akira. Mixed-valent tetranuclear MnIIMnIII
3 complex with 1,3-diamino-2-hydroxypropane-N,N’,N”,N”’-tetraacetic acid. In: Chemistry Journal of Moldova, 2014, nr. 1(9), pp. 100-105. ISSN 1857-1727. DOI: https://doi.org/10.19261/cjm.2014.09(1).12 |
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Chemistry Journal of Moldova | |||||
Numărul 1(9) / 2014 / ISSN 1857-1727 /ISSNe 2345-1688 | |||||
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DOI: https://doi.org/10.19261/cjm.2014.09(1).12 | |||||
CZU: 546.71+544+547+549 | |||||
Pag. 100-105 | |||||
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Rezumat | |||||
Mixed-valent tetranuclear MnIIMnIII 3 complex with 1,3-diamino-2-hydroxypropane-N,N’,N”,N”’-tetraacetic acid (H5dhpta), Ca2[Mn4{μ-OHO}(dhpta)2(CH3COO)2], was synthesized and characterized by elemental analysis, IR and UV-vis-NIR spectroscopy, and temperature dependence of magnetic susceptibilities (4.5—300 K). Single-crystal
X-ray crystallography revealed a trapezoid tetranuclear core with μ-(OHO), μ-alkoxido, μ-acetato bridges. Magnetic data analysis showed considerable antiferromagnetic interactions among these four manganese atoms with J(MnIIIMnIII) of –35.02 cm–1, J’(MnIII(MnII)-MnIII) of –4.82 cm–1 , and J”(MnII-MnIII) of –4.61 cm–1. |
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Cuvinte-cheie manganese complex, tetranuclear complex, mixed-valent complex, magnetic property |
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