Title: A dinuclear cobalt(II) complex of calix[8]arenes exibiting strong magnetic anisotropy
Authors: Petit, Sarah
Pilet, Guillaume
Luneau, Dominique ×
Chibotaru, Liviu
Ungur, Liviu #
Issue Date: 15-Aug-2007
Publisher: Royal Society of Chemistry
Series Title: Dalton Transactions issue:40 pages:4582-4588
Abstract: The solvothermal reaction of cobalt(II) acetate with p-tert-butylcalix[ 8] arene ( calix) and triethylamine affords the compound (Et3NH)(2) [Co-2(II)(calix)(2)] (1 center dot 2Et(3)NH) that shows a hydrogen bond bridged dinuclear complex [Co-2(II)(calix)(2)](2-) ( 1) with cobalt( II) ions in a tetrahedral geometry. The compound crystallises in the monoclinic, space group P2(1)/n with cell parameters a = 14.89( 1) angstrom, b = 20.90( 2) angstrom, c = 30.87( 4) A, beta = 102.57( 7)degrees. V = 9376( 16) angstrom(3), Z = 2. The magnetic studies together with ab initio calculations are evidence of an important role of the geometry of the second coordination sphere of carbon and hydrogen atoms around the CoO4 core in quantifying the zero field splitting on cobalt sites. This results in strong magnetic anisotropies with a negative axial component on the cobalt fragments.
ISSN: 1477-9226
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Quantum Chemistry and Physical Chemistry Section
× corresponding author
# (joint) last author

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