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Structure and Magnetic Properties of a Gadolinium Hexafluoroacetylacetonate Adduct with the Radical 4,4,5,5‐tetramethyl‐2‐phenyl‐4,5‐dihydro‐1 H ‐imidazole 3‐Oxide 1‐Oxyl
Author(s) -
Benelli Cristiano,
Caneschi Andrea,
Galleschi Dante,
Laugier Jean,
Rey Paul
Publication year - 1987
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198709131
Subject(s) - unpaired electron , chemistry , adduct , radical , antiferromagnetism , imidazole , ion , gadolinium , ferromagnetism , dodecahedron , magnetic susceptibility , lanthanide , atomic orbital , oxide , crystallography , electron , photochemistry , stereochemistry , condensed matter physics , organic chemistry , physics , quantum mechanics
A distorted dodecahedral array of eight O atoms surround the Gd 3⊕ ion in 2 , the first stable adduct of an organic radical ( 1 ) and a lanthanoid ion. From the temperature‐dependence of the magnetic susceptibility of 2 it can be concluded that there is a weak ferromagnetic interaction between Gd III and the unpaired electrons of two radicals as well as an antiferromagnetic interaction between the two radicals. f‐Metal orbitals participate in the magnetic interaction, as was shown by an angular overlap analysis.