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Inne
Molecular structure and spectral properties of mono- and dinuclear complexes formed by manganese(II), 2,6-dimethoxybenzoate and 2,2' - bipyridine or 2-methylpyrazine.
Autorzy
Rok wydania
1995
Czasopismo
Numer woluminu
236
Strony
149-154
DOI
10.1016/0020-1693(95)04638-P
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The adducts formed by reaction of [Mn(dmb)2(H2O)3]n·nH2O, dmb = 2,6-dimethoxybenzoato(1−), with 2,2′-bipyridine (bpy) or 2-methylpyrazine (2-Mepz) were isolated in the solid state and characterized by single crystal X-ray diffraction, IR and EPR spectroscopy, and thermogravimetry. The adduct [Mn2(dmb)4*bpy)2(H2O)2]·bpy crystallizes in the monoclinic space group P21/n, with . The complex exhibits a dinuclear structure where two manganese(II) atoms share two carboxylate groups adopting a rather uncommon single-atom bridging mode. The coordination at each metal nucleus is completed by a further carboxylate group, acting as a monodentate donor, a water molecule and a chelating bidentate bipyridine molecule. The crystals of the adduct [Mn(dmb)2(2-Mepz)2(H2O)2] are monoclinic, space group P21/n, with . The compound is mononuclear and consists of hexacoordinate ions bound to trans-pairs of monodentate carboxylates, water molecules and nitrogenous base molecules. The bpy adduct exhibits EPR spectra distinctive of magnetically coupled dimanganese(II) units.
Słowa kluczowe
Manganese complexes, Carboxylate complexes, Ternary complexes, Crystal structures, Dinuclear complexes
Adres publiczny
https://doi.org/10.1016/0020-1693(95)04638-P
Strona internetowa wydawcy
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