| Synthesis, structure, and magnetic properties of dinuclear cobalt(II) complexes with a new phenol-based dinucleating ligand with four hydroxyethyl chelating arms. | |
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MedLine Citation:
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PMID: 12132934 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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A new end-off type acyclic ligand with four hydroxyethyl arms, 2,6-bis[bis(2-hydroxyethyl)aminomethyl]-4-methylphenol [H(bhmp)], formed dinuclear cobalt(II) complexes [Co(2)(bhmp)(OAc)(2)]BPh(4) (1) and [Co(2)(bhmp)(OBz)(2)]BPh(4) (2). The complex 1.2.5CH(3)CN (C(50)H(62.5)BCo(2)N(4.5)O(9)) crystallizes in the monoclinic space group C2/c with dimensions a = 25.424(5) A, b = 13.376(2) A, c = 29.913(6) A, beta = 105.930(3) degrees, and V = 9781(3) A(3) and with Z = 8. X-ray diffraction analysis revealed a mu-phenoxo-bis(mu-acetato)dicobalt(II) core structure containing two octahedral cobalt(II) ions. Electronic spectra were investigated for 1 and 2 in the range 400-1800 nm, and the data were typical for the octahedral high-spin cobalt(II) complexes. Magnetic susceptibility was measured for 1 and 2 over the temperature range 4.5-300 K, and the data were analyzed well using our theoretical method. The best fitting parameters were kappa = 0.77, lambda = -116 cm(-1), Delta = 572 cm(-1), and J = -0.44 cm(-1) for complex 1 and kappa = 0.96, lambda = -93 cm(-1), Delta = 616 cm(-1), and J = -0.33 cm(-1) for complex 2. |
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Authors:
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Md Jamil Hossain; Mikio Yamasaki; Masahiro Mikuriya; Atsushi Kuribayashi; Hiroshi Sakiyama |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Inorganic chemistry Volume: 41 ISSN: 0020-1669 ISO Abbreviation: Inorg Chem Publication Date: 2002 Jul |
Date Detail:
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Created Date: 2002-07-22 Completed Date: 2002-12-27 Revised Date: 2003-11-03 |
Medline Journal Info:
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Nlm Unique ID: 0366543 Medline TA: Inorg Chem Country: United States |
Other Details:
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Languages: eng Pagination: 4058-62 Citation Subset: - |
Affiliation:
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Department of Material and Biological Chemistry, Faculty of Science, Yamagata University, Kojirakawa, Yamagata 990-8560, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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