Novel Fe(III), Co(III), Ni(II), Cu(II) coordination compounds involving 2-[(2-hydroxyphenyl)methylene]hydrazine-N-(2-propenyl)-carbothioamide as ligand: Synthesis, crystal structures and spectral characteristics

• Published in: Inorganica Chimica Acta Vol. 423; pp. 496 - 503
• Main Authors: Orysyk, S.I., Repich, G.G., Bon, V.V., Dyakonenko, V.V., Orysyk, V.V., Zborovskii, Yu.L., Shishkin, O.V., Pekhnyo, V.I., Vovk, M.V.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.11.2014
• Subjects: 3d metal complexes; Carbothioamide; MALDI-mass spectrum; Stability constant; X-ray diffraction study; X-ray photoelectron spectroscopy; 3d metal complexes; Stability constant; Carbothioamide; MALDI-mass spectrum; X-ray diffraction study; X-ray photoelectron spectroscopy
• ISSN: 0020-1693; 1873-3255
• DOI: 10.1016/j.ica.2014.08.056

Novel Cu(II), Fe(III), Co(III) and Ni(II) coordination compounds with a 2-[(2-hydroxyphenyl)methylene]hydrazine-N-(2-propenyl)carbothioamide have been synthesized and characterized by single crystal X-ray diffraction, IR, UV–Vis, 1H, 13C NMR, X-ray photoelectron and MALDI-mass spectroscopy. [Display omitted] •Synthesis of novel complex compounds and their X-ray diffraction study.•Spectral characteristics: IR, UV–Vis, 1H (13C) NMR, XPS and MALDI-mass.•Thione–thiolic tautomerism of the ligand upon complex formation. Novel Cu(II), Fe(III), Co(III) and Ni(II) coordination compounds with a 2-[(2-hydroxyphenyl)methylene]hydrazine-N-(2-propenyl)carbothioamide have been synthesized and characterized by single crystal X-ray diffraction, IR, UV–Vis, 1H, (13C) NMR and X-ray photoelectron spectroscopy. The optimal conditions for the complexation reactions have been determined. Depending on synthesis conditions the ligand coordinates to the metal ion as a neutral molecule, monoanion or bianion mode forming complexes with composition [Cu(H2L)Cl] (I), [Fe(H2L)2]NO3 (II), [Co(H2L)2]Cl (III) and [Ni(HL)Py] (IV). The stability constants for the compounds I−III have been calculated. It has been found that the ligand molecules are coordinated in a tridentate manner by the sulfur, azomethine nitrogen and phenol oxygen in both thione (complexes I−III) or thiolic (complex IV) tautomeric forms.