Magnetic and structural characterization of dibromo- and dichlorobis(thiazole)copper(II)

NMR study of lineshifts and relaxation rates of the one-dimensional antiferromagnetLiCuVO4

“…2͑C͒. In both orientations one finds a behavior typical of one-dimensional systems showing a broad maximum around T Ϸ 28 K that can be nicely described by the Bonner-Fisher model as documented by a corresponding fit 30 depicted as solid black and grey lines for H ʈ b and H Ќ b, respectively. The deduced exchange coupling constants J NMR / k B are given in Table I and again confirm the values from the bulk susceptibility.…”

“…For both orientations the lineshift K͑T͒ nicely follows the Bonner-Fisher-type behavior 29 for the bulk susceptibility bulk ͑T͒ of an antiferromagnetic spin chain as indicated by the solid line. This line is a fit using the rational function given by Estes et al 30 The coupling constants J NMR / k B deduced from these fits are summarized in Table I for 7 Li NMR for comparison with the respective values of the bulk susceptibility. We note that the strong anisotropy of the 7 Li lineshift seems to be intimately connected with the crystallographic arrangement of the Li + ions on nonmagnetic chains.…”

Decamethylytterbocene Complexes of Bipyridines and Diazabutadienes: Multiconfigurational Ground States and Open-Shell Singlet Formation

“…The closed-form solution to the BF model, eq 2, is given by Estes et al 46 where x=|ℑ|/k B T, and g=2.000…”

Synthesis, Structural, and Antimicrobial Studies of Some New Coordination Compounds of Palladium(II) with Azomethines Derived from Amino Acids

“…accordance with the fact that chelation increases the activity. e chelation reduces the polarity [24,25] of the metal ion, mainly, because of the partial sharing of its positive charge with the donor groups and possibly the -electron delocalization within the whole chelate ring [26][27][28]. is process of chelation thus increases the lipophilic nature of the central metal atom, which in turn favours its permeation through the lipid layer of the membrane [29][30][31].…”