Petrenko, Peter A.Gdaniec, MariaSimonov, IurieStăvilă, VitalieGulea, Aurelian2023-10-242023-10-242004PETRENKO, Peter A., GDANIEC, Maria, SIMONOV, Iurie , STĂVILĂ, Vitalie, GULEA, Aurelian. Crystal structure of monoprotonated Ni(II) nitrilotriacetate tetrahydrate. În: Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya, 2004, vol. 30, pp. 813-817. ISSN 1070-32841070-3284https://msuir.usm.md/handle/123456789/11450https://doi.org/10.1023/B:RUCO.0000047470.68177.4aA Ni(II) complex of the composition Ni(HNta)·4H 2O (I) was synthesized. Its structure was found to consist of neutral mononuclear [Ni(HNta)(H 2O) 3] complexes and crystallization water molecules. The Ni atom has octahedral surrounding and is coordinated to tridentate-chelate HNta 2- ligand through the N atom and O atoms of two deprotonated acetate groups and through the O atoms of three water molecules. The structure of I was compared with those of the Zn(HNta)·4H 2O and Co(HNta)·4H 2O complexes isostructural to I. Thermogravimetric method showed that the decomposition of compound I occurs through several successive stages of dehydration, deaquation, decarboxylation, and the formation of inorganic residue.enEMTREE drug terms acetic acid derivativecobalt derivativenickelnitrilotriacetic acidNitrogenoxygenwaterzinc derivative EMTREE medical terms articleChelationChemical compositionchemical structurecomparative studycrystal structurecrystallizationdecarboxylationdecompositiondehydrationproton transportsynthesisthermogravimetryArticle