کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1338611 | 979672 | 2013 | 5 صفحه PDF | دانلود رایگان |
New cobalt(II) (1), iron(II) (2) and manganese(II) (3) complexes of M(3,6-SQ)2L type containing 3,6-di-tert-butyl-o-benzosemiquinonato ligands (3,6-SQ) and 5,7-di-tert-butyl-2-(pyridine-2-yl)benzoxazole (L) were synthesized and characterized in details. Magnetic susceptibility measurements and spectroscopic studies have shown that all complexes include metal(II) in the high-spin state and two radical-anionic o-semiquinonato ligands. The antiferromagnetic ligand–ligand coupling in cobalt(II) and iron(II) complexes takes place, while manganese(II) complex demonstrates metal–ligand antiferromagnetic interactions. Molecular structure of Co(3,6-SQ)2L was determined by X-ray analysis. Cobalt(II) atom has a distorted trigonal prismatic environment.
New cobalt(II), iron(II) and manganese(II) complexes of M(3,6-SQ)2L type containing 3,6-di-tert-butyl-o-benzosemiquinonato ligands (3,6-SQ) and substituted 2-(pyridine-2-yl)benzoxazole (L) were characterized in details. Magnetic susceptibility measurements and spectroscopic studies have shown that all complexes include metal(II) in the high-spin state and two radical-anionic o-semiquinonato ligands. The antiferromagnetic ligand–ligand coupling in cobalt(II) and iron(II) complexes takes place, while manganese(II) complex demonstrates metal–ligand antiferromagnetic interactions.Figure optionsDownload as PowerPoint slide
Journal: Polyhedron - Volume 49, Issue 1, 25 January 2013, Pages 239–243