6996-16-3Relevant academic research and scientific papers
Proprietes physico-chimiques des iodohistidines. I. Etude protometrique de la complexation des cations metalliques Cu(II), Co(II), Ni(II), Cd(II), Zn(II) par la mono- et la diiodohistidine
Wang, Jide,Collange, Edmond,Aymes, Daniel J,Paris, Michel R,Fournaise, Robert
, p. 30 - 36 (2007/10/02)
Physicochemical properties of iodo-histidines.I.Protometric study of the complexation of metallic cations Cu(II), Co(II), Ni(II), Cd(II), Zn(II) by mono- and diiodohistidine.Mono- (MIH) et diiodo- (DIH) histidines are synthesized by iodination of histidine using ICl; their protonation contants are determined at 25 deg C in 0,5 mol*L-1 NaNO3 (or NaCl) together with the stability constants of their complexes formed with ions of the first transition series.Computer refinement of the stability constant values was done by adjusting the calculated and experimental curves of neutralization by the PROTAF program.This work provides evidence for a variety of complexes.Apart from simple complexes, such as MA and MA2, other protonated or deprotonated species, like MHA and MH2A or MH-1A and MH-2A, were formed depending on the system. histidine / monoiodohistidine /diiodohistidine / cobalt / complexes / protometry
