Binding of Mercury(II) by N-(2-mercaptopropionyl)glycine. Synthesis, IR and NMR Characterization. Crystal Structure of the 1: 2 Solvate of Bis [N-(propionyl-2-thiolato)-glycine]mercury(II) with 4-Methylpyridine

Popović, Zora and Matković-Čalogović, Dubravka and Hasić, Jasmina and Sikirica, Milan and Vikić-Topić, Dražen (1999) Binding of Mercury(II) by N-(2-mercaptopropionyl)glycine. Synthesis, IR and NMR Characterization. Crystal Structure of the 1: 2 Solvate of Bis [N-(propionyl-2-thiolato)-glycine]mercury(II) with 4-Methylpyridine. Croatica Chemica Acta, 72 (2-3). pp. 279-294. ISSN 0011-1643

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Abstract

Bis [N-(propionyl-2-thiolato)glycine]mercury(II), Hg[SCH(CH3)CONHCH2COOH]2, was obtained by the reaction of an aqueous solution of N-(2-mercaptopropionyl)glycine and mercury(II) acetate. From the 4-methylpyridine ( γ-picoline) solution it crystallizes as a 1 : 2 solvate, Hg[SCH(CH3)CONHCH2COOH]2 x 2C6H7N, in the triclinic system, space group P1 with a = 4.810(5) Å, b = 9.711(4) Å, c = 15.615(8) Å, α = 105.76(4)°, β = 103.44(4)°, γ = 94.01(4)°, Z = 1, R = 0.027. Two N-(propionyl-2-thiolato)glycine molecules are bonded centrosymmetrically to mercury over sulfur atoms as mercaptide at a distance of 2.341(2) Å. Hg(mpgH)2 molecules are connected by centrosymmetrically related hydrogen bonds N1–H...O3 of 2.922(5) Å into chains along [100]. Each molecule also forms two hydrogen bonds O1–H...N2 of 2.612(6) Å with two γ-picoline molecules. The structure of complexes and binding to sulfur were substantiated by 1H and 13C NMR spectroscopy on the basis of mercury induced chemical shifts, H–H and C–H coupling constants and connectivities in twodimensional homo- and heteronuclear correlated spectra.

Item Type: Article
Keywords: mercury(II); N-(2-mercaptopropionyl)glycine; bis[N-(propionyl-2-thiolato)glycine]mercury(II); X-ray crystal structure; IR spectra; one- and twodimensional homo- and heteronuclear 1H and 13C NMR spectra
Date: 1999
Subjects: NATURAL SCIENCES > Chemistry
Divisions: Faculty of Science > Department of Chemistry
Publisher: Hrvatsko kemijsko društvo
Related URLs:
Depositing User: mag. bibl. Ana Šafran
Date Deposited: 27 May 2014 12:33
Last Modified: 27 May 2014 12:33
URI: http://digre.pmf.unizg.hr/id/eprint/1792

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