HETEROMETALLIC COMPOUNDS WITH THE BINUCLEAR COMPLEX ANION [CR2 (OH)(AC)(NTA)2 ]2– : SYNTHESIS AND STRUCTURE
Date
2009
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Abstract
Heterometallic compounds BaCr2(OH)(Ac)(Nta)2 • 4H2O (I) and [Fe(L)3][Cr2(OH)(Ac)(Nta) 2] • nH2O (L is Bipy (II) and Phen (III); Bipy is, αα′-bipyridine, Phen is o,o′-phenanthroline, Ac - is acetate ion, Nta is nitrilotriacetate ion; n = 8 (II) and 6.25 (III)) are synthesized. According to the X-ray diffraction data, compounds II and III have ionic structures built of the isolated complex cations [Fe(L) 3]2+, binuclear complex anions [Cr2(OH)(Ac) (Nta)2]2-, and crystallization water molecules. The magnetic properties of compounds II and III in the interval from 2 to 300 K confirm assumptions on the diamagnetic character of [Fe(L)3] 2+ and indicate the antiferromagnetic interaction between the chromium atoms in the dimeric fragment [Cr2(OH)(Ac)(Nta) 2]2-.
Description
Keywords
Engineering controlled terms Antiferromagnetism, Chromium, Ionization of liquids, magnetic properties, Negative ions, Structures (built objects), Synthesis (chemical), X ray diffraction Engineering uncontrolled terms Antiferro-magnetic interactions, Binuclear complexes, Bipyridines, Complex cation, heterometallic compounds, Ionic structure, Phenanthrolines, Water molecule, X-ray diffraction data Engineering main heading Chromium compounds
Citation
CIORNEA, Victor, ȘOVA, Sergiu, NOVIȚCHI, Ghenadie, GANJU, Dumitru, CAJEVA, Olga, GULEA, Aurelian, SIMONOV, Iurie . Heterometallic compounds with the binuclear complex anion [Cr 2(OH)(Ac)(Nta)2]2-: Synthesis and structure. În: Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya, 2009, vol. 35, pp. 817-823. ISSN 1070-3284