Preparation, thermal analysis and spectral characterization of the 1 : 1 complexes of mercury(II) halides and Pseudohalides with 3,4,5,6-Tetrahydropyrimidine-2-thione. Crystal structures of bis(3,4,5,6-tetrahydropyrimidine-2-thione-S)mercury(II) tetrachloro and tetrabromomercurate(II)

Popović, Zora; Matković-Čalogović, Dubravka; Pavlović, Gordana; Soldin, Željka; Giester, Gerald; Rajić Linarić, Maša; Vikić-Topić, Dražen (2001) Preparation, thermal analysis and spectral characterization of the 1 : 1 complexes of mercury(II) halides and Pseudohalides with 3,4,5,6-Tetrahydropyrimidine-2-thione. Crystal structures of bis(3,4,5,6-tetrahydropyrimidine-2-thione-S)mercury(II) tetrachloro and tetrabromomercurate(II). Croatica Chemica Acta, 74 (2). pp. 359-380. ISSN 0011-1643

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Abstract

Mercury(II) complexes of the type HgX2(H(4)pymtH) (X Cl- Br I-, SCN-, CN-; H(4)pymtH = 3,4,5, 6-tetrahydropyrimidine-2-thione) have been obtained and structurally characterized by X-ray diffraction, IR, H-1 and C-13 NMR spectroscopy. Single crystal X-ray structure analysis was performed for the chloro and bromo complexes, which were found to be isostructural. Their crystal structures consist of [Hg(H(4)pymtH)(2)](2+) complex cations and [HgX4](2-) complex anions interconnected by Hg . . .X contacts into puckered sheets. The crystal structure of H(4)pymtH has been redetermined to greater accuracy. In solution NMR spectra of complexes, the greatest complexation effects were found on the C-13 chemical shift of the thioketo-carbon atom and on the H-1 chemical shift of the NH protons.

Item Type:	Article
Uncontrolled Keywords:	mercury(II) complexes; heterocyclic thiones; crystal structure; thermal analysis; H-1 and C-13 NMR spectra; lewis basicity scales; heterocyclic thiones; 160 k; molecular-structure; group-12 metals; part 1; solvation; chloride; 1-methylimidazoline-2(3h)-thione; 25-degrees-C
Subjects:	NATURAL SCIENCES > Chemistry
Divisions:	NMR Center
Projects:	Project title Project leader Project code Project type Izotopno obilježavanje i molekulske spektroskopije Goran Baranović 00980802 MZOS Kemija žive u molekulskim sustavima od biološkog značaja Milan Sikirica 119408 MZOS
Depositing User:	Dražen Vikić-Topić
Date Deposited:	20 Nov 2013 09:55
URI:	http://fulir.irb.hr/id/eprint/992

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