The structure and EPR spectra of binuclear copper(II) complexes with acyldihydrazones of β-diketones View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2009-07

AUTHORS

G. M. Larin, V. F. Shul’gin, E. D. Mel’nikova, V. Ya. Zub, A. N. Chernega

ABSTRACT

The synthesis and structure of binuclear copper(II) complexes with acyldihydrazones of some β-diketones are described. The molecular structure of the copper(II) complex [Cu2L·4Py] with trifluoroacetylacetone succinyldihydrazone (H4L) was determined by the single-crystal X-ray analysis. Central atoms are bridged by a chain of seven σ-bonds with a Cu...Cu distance of 8.750 Å. EPR spectra of copper(II) complexes with acyldihydrazones of trifluoroacetylacetone and lower dicarboxylic acids containing from one to four methylene groups in the aliphatic spacer show the seven-line HFS due to spin-spin coupling of unpaired electrons with the two equivalent copper nuclei (g = 2.110, a = (38.5–40.5)⊙10−4 cm−1). By extending polymethylene spacer, as well as by modifying starting β-diketone, an exchange interaction between paramagnetic centers is suppressed. More... »

PAGES

1342-1348

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s11172-009-0179-z

DOI

http://dx.doi.org/10.1007/s11172-009-0179-z

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1040907661


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