Kutoley D. Synthesis and properties of mixed ligand complex compounds of Copper(II) on the basis of complexones

Object - Cu(II) ions coordination compounds with N-(2-hydroxyethyl) imino-N,N-diacetic acid and 1-hydroxyethylydene diphosphonic acid, mixed ligand complexes with additional ligands 2-amino ethanol, ethylene diamine and glycine. The aim of the work is the determination of main regularities of formation, physical-chemical and structural features of Cu(II) mixed ligand complexes based on complexones H4hedpa, H2heida with other low dentate ligand. Research methods: thermogravimetry, element analysis, pH-potentiometry, computer modeling, electronic absorption spectroscopy, polarography, IR - spectroscopy, X-ray structural analysis. Formation of mixed ligand complexes with all of examined ligands containing Cu(HnLI,II)Хk (n = 2,0, k = 1,2; LІ,ІІ - complexones 1-hydroxyethylydene diphosphonic acid and N-(2-hydroxyethyl) imino-N,N-diacetic acid, X - additional ligand) and Cu2LIX2 (X - 2-amino ethanol and ethylene diamine) in aqeous solutions was established. Influence of Copper(II) ion coordination environment on structure, stability and properties of mixed ligand complexes was revealed. The structural differences in Cu(II) ions coordination sphere for complexes Cuheidaen and Cuheidamea crystalline samples were determined. High plant growth stimulation activity of Cu(II) mixed ligand complexes was shown. Field of application - agrochemistry.