Synthesis and X-ray crystal structure of the first dinuclear 1,1,2-tris(pyrazol-1-yl)ethene–zinc chloride complex

• Published in: Polyhedron 2012-02, Vol.33 (1), p.252-256
• Main Authors: Potapov, Andrei S., Nudnova, Evgenia A., Ogorodnikov, Vladimir D., Petrenko, Tatiana V., Khlebnikov, Andrei I.
• Format: Article
• Language: English
• Subjects: 1,1,2-Tris(pyrazol-1-yl)ethene; Crystal structure; Dinuclear complex; Pyrazole; Zinc
• ISSN: 0277-5387
• DOI: 10.1016/j.poly.2011.11.035

Complexes of zinc, cadmium and mercury(II) with 1,1,2-tris(pyrazol-1-yl)ethene were prepared and characterized IR spectroscopy. Structure of zinc complex was determined by X-ray crystallography. [Display omitted] ► The first coordination compounds of 1,1,2-tris(pyrazol-1-yl)ethene were prepared. ► Structure of zinc chloride complex was determined by X-ray crystallography. ► Zinc complex is a binuclear discrete coordination compound. ► Binuclear zinc complex contains five- and four-coordinated ZnN4Cl and ZnNCl3 centers. Complexes of 1,1,2-tris(pyrazol-1-yl)ethene (Pz3) with zinc(II), cadmium and mercury(II) ions were prepared and characterized by IR spectroscopy. Cadmium and mercury(II) complexes are insoluble solids of polymeric structure, while zinc complex is a discrete dinuclear complex (Pz3)2Zn2Cl4, the structure of which was determined by X-ray crystallography. Zinc complex contains five- and four-coordinated PzN4Cl and PzNCl3 zinc centers. Two Pz3 ligands in the complex are unequivalent, one of them is coordinated by two zinc centers in a bridging mode, while the other is a terminal ligand linked to only one of zinc ions.