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Structure, electrochemistry, spectroscopy, and magnetic resonance, including high-field EPR, of {(mu-abpy)[Re(CO)(3)X](2)}(circle/center dot-), where abpy=2,2 '-azobispyridine and X = F, Cl, Br, I
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SYSNO ASEP 0324915 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Structure, electrochemistry, spectroscopy, and magnetic resonance, including high-field EPR, of {(mu-abpy)[Re(CO)(3)X](2)}(circle/center dot-), where abpy=2,2 '-azobispyridine and X = F, Cl, Br, I Title Struktura, elektrochemie, spektroskopie, a magnetická resonance, včetně high-field EPR {(mu-abpy)[Re(CO)3X]2}(circle/center dot-), kde abpy = 2,2'-azobispyridine Author(s) Frantz, S. (DE)
Sieger, M. (DE)
Hartenbach, I. (DE)
Lissner, F. (DE)
Schleid, T. (DE)
Fiedler, Jan (UFCH-W) RID, ORCID
Duboc, C. (FR)
Kaim, W. (DE)Source Title Journal of Organometallic Chemistry. - : Elsevier - ISSN 0022-328X
Roč. 694, 7-8 (2009), s. 1122-1133Number of pages 12 s. Language eng - English Country CH - Switzerland Keywords azo ligand ; crystal structure ; EPR ; rhenium dinuclear compounds Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects LC510 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) OC 139 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000264317800019 DOI 10.1016/j.jorganchem.2008.09.034 Annotation Attempts to prepare and study the title complexes yielded the structurally characterized neutral compounds anti-{(.mu.-abpy)[Re(CO)3X]2}, X = Br (I41/a), I (C2/c), and two crystalline forms of anti-{(.mu.-abpy)[Re(CO)3X]2}, (P21/c), (I41/a). Syntheses of {(.mu.-abpy)[Re(CO)3Cl]2} at high or low temperatures yielded different compositions, the high temperature procedure led to partial formation of syn/anti mixtures and one-electron reduced species. The same was observed to a greater extent in the preparation of labile syn/anti-{(.mu.-abpy)[Re(CO)3F]2}(circle/center dot-). The identity of isolated species was investigated using 1H NMR spectroscopy, variable frequency EPR spectroscopy, cyclic voltammetry, UV/Vis- and IR-spectroelectrochemistry. The effects of halide variation on structure, reduction potentials, isomerism and electronic situation are being discussed. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2009
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