Volume 539, Issue 8 pp. 229-238
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β-Alkoxycarbonyl Alkyl Tin Chelates 2. Dithizonates – Preparation and Spectroscopic Studies

Barun Kanti Deb

Barun Kanti Deb

Department of Chemistry, Univ. of North Bengal, Raja Rammohunpur Dt. Darjeeling, West Bengal/India PIN-734 430

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Prof. Dr. Amiya Kanti Ghosh

Corresponding Author

Prof. Dr. Amiya Kanti Ghosh

Department of Chemistry, Univ. of North Bengal, Raja Rammohunpur Dt. Darjeeling, West Bengal/India PIN-734 430

Department of Chemistry, Univ. of North Bengal, Raja Rammohunpur Dt. Darjeeling, West Bengal/India PIN-734 430Search for more papers by this author
First published: August 1986
Citations: 7

Abstract

en

Dithizone forms stable complexes with β-alkoxycarbonyl ethyl tin chlorides (the so called “Estertins” – a unique class of PVC stabilizer). Reduction of Lewis acidity of the resulting organotin chloride can improve the efficiency of a stabilizer and therefore the β-alkoxycarbonyl ethyl tin dithizonates are likely to show PVC stabilization property. A number of β-alkoxycarbonyl ethyl tin dithizonates of the types R2SnL2, R2SnLX, and RSnL2X where R = CH3OCOCH2CH2–, C4H9OCOCH2CH2–, and CH3OCOCH(CH3)CH2–; X = Cl, SCN and L = Dithizone (i. e. 1,5-diphenyl thiocarbazone) and one complex (CH3OCOCH2CH2)2SnL′Cl where L′ = Diphenylcarbazone have been prepared and characterized by elemental analysis, electronic, IR and PMR spectral data. Possible structural features of the isolated complexes have also been discussed. Preliminary evaluation of the complex (CH3OCOCH2CH2)2Sn(HDz)2 as a PVC stabilizer has also been reported.

Abstract

de

(β-Alkoxycarbonyl-alkyl)Zinn-Chelate. 2. Dithizonate – Darstellung und spektroskopische Untersuchungen

Dithizon bildet stabile Komplexe mit (β-Alkoxycarbonylethyl)zinnchloriden (sogenannte “Estertins” – eine Klasse von PVC-Stabilisatoren). Die Verminderung der Lewis-Acidität der resultierenden Organozinn-chloride kann die Wirksamkeit eines Stabilisators verbessern und deshalb wahrscheinlich zeigen (β-Alkoxycarbonylethyl)zinn-dithizonate PVC-Stabilisatoreigenschaften. Einige (β-Alkoxycarbonylethyl)zinn-dithizonate der Typen R2SnL2, R2SnLX und RSnL2X (R = CH3OCOCH2CH2–, C4H9OCOCH2CH2– und CH3OCOCH(CH3)CH2–; X = Cl, SCN und L = Dithizon (1,5-Diphenylthiocarbazon)) und ein Komplex des Typs (CH3OCOCH2CH2)2SnL′Cl (L′ = Diphenylcarbazon) werden dargestellt und analytisch sowie durch UV-VIS-, IR- und PMR-Spektren charakterisiert. Mögliche Strukturen der isolierten Komplexe werden diskutiert. Erste Untersuchungen des Komplexes (CH3OCOCH2CH2)2Sn(HDz)2 als PVC-Stabilisator werden mitgeteilt.

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