Structure and ESR spectra of single crystals of potassium bis(malonato)cuprate

The influence of metals on the electronic system of biologically important ligands. Spectroscopic study of benzoates, salicylates, nicotinates and isoorotates. Review

“…11), tetra aqua copper salicylate [149], tetra aqua nickel salicylate [150] and tetra aqua magnesium salicylate [151] showed that the salicylate ion is monodentate, and the metal is coordinated only through the carboxyl group. Salicylate bidentate type coordination through the carboxylate groups was reported for aqua copper salicylate [152] and tetra aqua manganese salicylate [153]. Bidentate chelation through the carboxylate and phenolic oxygen atom was reported for certain lanthanide(III) salicylates, for example for isostructural aquatris samarium(III) and aquatris americium(III) complexes [154].…”

Intramolecular “Aryl−Metal Chelate Ring” π,π-Interactions as Structural Evidence for Metalloaromaticity in (Aromatic α,α‘-Diimine)−Copper(II) Chelates: Molecular and Crystal Structure of Aqua(1,10-phenanthroline)(2-benzylmalonato)copper(II) Three-hydrate

“…In both complexes, the metal atom exhibits an elongated square pyramidal geometry (SP), and the Cu(II)−malonato-like ring exhibits a slightly distorted, puckered boat conformation. The SP coordination is rather common in Cu(II)−malonato complexes, ,, particularly in mixed-ligand copper(II) complexes with malonato and a N-heterocyclic 2,9 or N-aliphatic amines as secondary ligand 1 Complex molecule of [Cu(Bzmal)(phen)(H 2 O)]·3H 2 O (compound 1 ).…”