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http://yadda.icm.edu.pl:80/baztech/element/bwmeta1.element.baztech-article-BUJ5-0018-0055

Czasopismo

Polish Journal of Chemistry

Tytuł artykułu

Synthesis and Magnetism of -Dioximato-Bridged Heterotrinuclear Oxovanadium(IV)–Palladium(II)–Oxovanadium(IV) Complexes

Autorzy Li, Y. T.  Liu, Y.  Yan, C. W. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
Abstrakty
EN Four novel oxovanadium(IV)–palladium(II)–oxovanadium(IV) heterotrinuclear complexes of the formula [(VO)2Pd(-FD)2L2]SO4, where (-FD)2 represents -furildioximato and L denotes: 5-methyl-1,10-phenanthroline (Me-phen), 2,9-dimethyl-1,10- phenanthroline (Me2-phen), 5-chloro-1,10-phenanthroline (Cl-phen) and 5-bromo- 1,10-phenanthroline (Br-phen), have been synthesized and characterized by elemental analyses, molar conductance and magnetic moments of room-temperature measurements, IR and electronic spectral studies. It is proposed that these complexes have extended dioximato-bridged structures and consist of two oxovanadium(IV) and a palladium( II) ions, in which the central palladium(II) ion has a square-planar environment and the end capped two oxovanadium(IV) ions have a square-pyramidal environment. The magnetic properties of complexes [(VO)2Pd(-FD)2(Me-phen)2]SO4 (1) and [(VO)2Pd(- FD)2(Me2-phen)2]SO4 (2) were investigated over the 4.2~300 K range and correspond to what is expected for an antiferromagnetic VO(IV)–VO(IV) pair with SVO(IV) = 1/2 and SPd(II) = 0 (Pd2+ is a diamagnetic in a square-planar environment) local spins. The exchange integral (J) was evaluated as J = 28 cm1 for (1) and J = 6.19 cm1 for (2) based on the spin Hamiltonian operator, H=- 2JS S1 x S2
Słowa kluczowe
Wydawca Polskie Towarzystwo Chemiczne
Czasopismo Polish Journal of Chemistry
Rocznik 2001
Tom Vol. 75, nr 11
Strony 1703--1710
Opis fizyczny Bibliogr. 28 poz.,rys.
Twórcy
autor Li, Y. T.
autor Liu, Y.
autor Yan, C. W.
  • Department of Chemistry, Qufu Normal University, Qufu Shandong, 273165, P. R. China
Bibliografia
Kolekcja BazTech
Identyfikator YADDA bwmeta1.element.baztech-article-BUJ5-0018-0055
Identyfikatory