Complex formation equilibria of binary and ternary complexes involving 3,3-bis(1-methylimidazol-2yl)propionic acid and bio-relevant ligands as 1-aminocyclopropane carboxylic acid with reference to plant hormone.
The formation equilibria for the binary complexes of Cu(II) with 1-aminocyclopropane carboxylic acid (ACC) and 3,3-bis(1-methylimidazol-2-yl)propionic acid (BIMP) were investigated. ACC and BIMP form the complexes 110, 120 and 11-1. The ternary complexes of Cu(II) with BIMP and biorelevant ligands as some selected amino acids, peptides and DNA constituents are formed in a stepwise mechanism. The stability constants of the complexes formed were determined and their distribution diagrams were evaluated. The kinetics of hydrolysis of glycine methyl ester in presence of [Cu(BIMP)](+) was investigated by pH-stat technique and the mechanism was discussed.
Department of Chemistry, Faculty of Science, Islamic University, Madinah, Saudi Arabia; Department of Chemistry, Faculty of Science, University of Cairo, Egypt. Electronic address: shoukrymm@hotmail.com.
Mohamed M
MM
Shoukry
Safaa S
SS
Hassan
D000598:Amino Acids, Cyclic / Q000737:chemistry*; D004583:Electrons; D004952:Esters / Q000737:chemistry; D006033:Glycylglycine / Q000737:chemistry; D006868:Hydrolysis; D007093:Imidazoles / Q000737:chemistry*; D007700:Kinetics; D008024:Ligands; D010937:Plant Growth Regulators / Q000737:chemistry*; D011199:Potentiometry; D011422:Propionates / Q000737:chemistry*; D013696:Temperature; D013816:Thermodynamics
C000593890:3,3-bis(1-methylimidazol-2yl)propionic acid; D000598:Amino Acids, Cyclic; D004952:Esters; D007093:Imidazoles; D008024:Ligands; D010937:Plant Growth Regulators; D011422:Propionates; D006033:Glycylglycine; C023863:1-aminocyclopropane-1-carboxylic acid; C029658:propionic acid
1-aminocyclopropane carboxylic acid; 3,3-bis(1-methylimidazol-yl)propionic acid; Equilibrium studies; Plant hormone