Synthesis and properties of cobalt(III) complexes of tripodal ligands containing amide functional groups

Copper(ii) complexes with lactamides: solution and solid state studies

“…and a d x2 À y2 ground state. 23 The hyperfine coupling constant and the g values (Table 4) are very close to those found for the copper-bleomycin complex 24 and are in agreement with a square pyramidal geometry [25][26][27] for all complexes. The value of A || is thus indicative of a low-distortion square pyramidal geometry and the strong in-plane ligand strength is corroborated by the large A || values.…”

Thermodynamic and spectroscopic studies of copper (II) complexes with three bis(amide) ligands derived from l-tartaric acid

“…No inter and intramolecular interactions between metallic centres occur, which would lead to a more complicated spectrum typical for a triplet state [25]. The values of g i , higher than those of g ( Table 2), are in agreement with a d x 2 Ày 2 ground state, characteristic of a D 4h symmetry [26]. The hyperfine coupling constants A i and the g values are consistent with a square pyramidal geometry [27].…”

Equilibrium and structural studies of complexes with a hexadentate ligand containing amide, amine and pyridyl nitrogen donors. Crystal structures of copper(ii), nickel(ii) and cobalt(iii) complexes

“…The ESR spectra are anisotropic and typical of axially symmetric monomeric copper() complexes exhibiting a tetragonal geometry, with g // > g ⊥ and a d x 2 Ϫ y 2 ground state. 26 A small anisotropy is also observed in the perpendicular part of the spectrum. Although pyctrien has at least six coordination sites, no intra-or inter-molecular dimeric complex is formed which should lead to a more complicated spectrum typical for a triplet spin state.…”