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Manganese(II) Trimeric Systems Derived from Pyridyldioximato Ligands: Synthesis, Crystal Structure, and Magnetic Characterization
Author(s) -
Escuer Albert,
Cordero Beatriz,
Solans Xavier,
FontBardia Mercé,
Calvet Teresa
Publication year - 2008
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200800548
Subject(s) - manganese , chemistry , ferrimagnetism , formate , ligand (biochemistry) , crystal structure , crystallography , molecule , antiferromagnetism , magnetic susceptibility , stereochemistry , topology (electrical circuits) , magnetization , catalysis , organic chemistry , receptor , biochemistry , physics , quantum mechanics , magnetic field , condensed matter physics , mathematics , combinatorics
Three new manganese compounds have been obtained by reaction of the 2,6‐diacetylpyridine dioxime (dapdoH 2 ) ligand with several Mn II salts. By using a variety of manganese(II) carboxylates, three Mn II derivatives with general formula [Mn 3 (RCOO) 6 (dapdoH 2 ) 2 ], where RCOO – = formate ( 1 ), acetate ( 2 ), and benzoate ( 3 ), were obtained. Structural analysis reveals chains of trinuclear units for 1 and isolated trinuclear molecules for 2 . Compound 1 provides an example of a new topology for the [Mn 3 (RCOO) 6 (L) 2 ] general formula. Magnetic susceptibility studies reveal topological ferrimagnetism for 1 and conventional antiferromagnetic response for 2 and 3 , with coupling constants of –3.1, –3.2, and –1.4 cm –1 inside the trimeric units of 1 , 2 , and 3 , respectively.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)
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