Copper(II) complexes with unsymmetrical pentadentate ed3a-type diamino-tricarboxylate ligands. Crystal structures, configurational analysis and DFT study of complexes

Synthesis, structural characterization, antiradical and antidiabetic activities of copper(II) and zinc(II) Schiff base complexes derived from salicylaldehyde and β-alanine

“…The electronic spectrum of the copper(II) complex 1 shows the shoulder of CT-transition at 322 nm and broad d-d absorption band at 700 nm, characteristic for both the square-planar and square-pyramidal geometry. The spectrum of the copper(II) complex 2 analogously displays the shoulder corresponding to CTtransition at 321 nm and the broad d-d transition band at 850 nm, suggesting the considerable deformation degree of the square-pyramidal geometry towards trigonal-bipyramidal geometry [44]. The electronic spectrum of complex 3…”

Conversions between dimeric and polymeric ketopiperazinediacetato complexes constructed by water-layers

“…[1][2][3] It is also a strong chelating agent for the preparations of a number of mononuclear complexes like [M(ed3a)X] [M = Co(III), Cr(III), Cu(II), Ti(IV) and X = mono-or bidentate ligand]. 10 Ed3a could be cyclized to ketopiperazinediacetic acid under acid conditions (H 2 kpda = C 8 11 Water is the most important and indispensable compound for living beings, but it is still not a fully understood liquid. 10 Ed3a could be cyclized to ketopiperazinediacetic acid under acid conditions (H 2 kpda = C 8 11 Water is the most important and indispensable compound for living beings, but it is still not a fully understood liquid.…”

Ketopiperazinediacetate zinc and copper complexes in the degradation of ethylenediaminetriaceta

“…It is a strong chelated agent for the preparations of mononuclear complexes like [M(ed3a)X] (M= Co(III), Cr(III), Cu(II), Ti(IV) and X = mono-or bidentate ligand) [4][5][6][7][8][9]. A mononuclear complex was also isolated as palladium complex trans-[Pd(Hkpda) 2 ] from Pd-edta solution [10].…”

“…Scheme 1. Degradation of ethylenediaminetriacetate and ketopiperazinediacetate copper complexes [8]. …”