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The Synthesis and Crystal Structure Research of the Novel Acylthiourea and Its Functional Complexes

Author: YangLiZuo
Tutor: ZhangYouMing；WeiTaiBao
School: Northwest Normal University
Course: Inorganic Chemistry
Keywords: Thiourea Complexes Crystal structure
CLC: O641.4
Type: Master's thesis
Year: 2006
Downloads: 168
Quote: 1
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Abstract

This thesis is divided into three chapters, the first chapter briefly introduced the acyl thiourea derivatives synthesis method and the crystal structure of the complex, and acyl thiourea derivatives and their complexes in pesticides, supramolecular anion recognition and supramolecular self-assembly summarized and summarize other aspects of research and application value. Chapter II, N, N ', N', N'-tetramethylethylenediamine (TMEDA) as catalyst, was synthesized by the reaction of benzoyl chloride or ethyl chloroformate and potassium thiocyanate intermediates ethoxycarbonyl isothiourea diisocyanate, the latter without isolation directly with a series of aromatic amines obtained by reacting the N-benzoyl-N'-aryl-thiourea, N-ethoxycarbonyl-yl-N'-aryl thiourea. The results found to generate a thiourea derivative of TMEDA catalytic ethylchloroformate, potassium thiocyanate, and the aromatic amine reaction in high yield. The Act has a high yield compared with the previous method, mild reaction conditions, easy handling, etc.. The use of synthetic ligand eight kinds of Hg (II), Cu (II) reaction to generate the twenty-two kinds of complexes, and elemental analysis, the the IR and ^{1 H NMR Characterization. The seven ligands twenty-two kinds complexes is a new compound. Chapter by two Hg (Ⅱ) and the chloride ions of the end groups as determined by X-ray single crystal diffraction and the reaction of N-benzoyl-N'-2-hydroxyethyl thiourea with mercury dichloride The bridge group unbridged complexes. Yl-N'-trichloro-phenyl N-ethoxycarbonyl thiourea with copper chloride by the reaction of N-ethoxycarbonyl-O-ethyl-N'-2, 4,6 - trichlorophenyl isourea copper (II) complexes. The results showed that the d orbital of the divalent copper ions to activate the sulfur-carbonyl complexes are the nucleophile ethanol attack the formation of the final compound. And N-ethoxycarbonyl-yl-N'-tribromophenyl thiourea and copper chloride produced by the reaction of 4,6 - dibromo-benzothiazol-2 - amino-ethyl, and the reaction is due to the divalent copper ion d The electrons are transferred to the empty p orbital of a bromine atom, resulting in a p-orbital delocalization π bond weakening, followed by the lone pair of electrons on the sulfur transferred to the empty p orbital of a carbon atom, thus stripped hydrogen sulfide to form a benzothiazole ring. The formation of the above two substances Document been reported. Also determined the single crystal structure of the N-ethoxycarbonyl-yl-N'-3-pyridyl thiourea. The results show that the ligand N-ethoxycarbonyl-N'-3-pyridyl thiourea crystal thiourea is formed via intermolecular hydrogen bond interactions with the supramolecular structure of the one-dimensional chain, due to the Van der Waals forces is formed along the b axis extending in a layered structure. N-ethoxycarbonyl-yl-N'-4-fluorophenyl thiourea Cu (of NO ₃) ₂ · 3H ₂ O reaction generated a novel acylthiourea metal clusters, and its single crystal structure was determined by X-ray diffraction. The crystal structure shows that the title compound is composed by six copper ion and six thiourea ligand caged metal clusters, each thiourea ligand effect, so that they are connected to each other to form a distortion of the polyhedral structure. The form of such a ligand in the crystal structure thiourea complexes have not been reported.}

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