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The molecular structure of three types of long-chain zinc(II) alkanoates for the study of oil paint degradation
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Applied Physical Chemistry.
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2014 (English)In: Polyhedron, ISSN 0277-5387, E-ISSN 1873-3719, Vol. 81, 335-340 p.Article in journal (Refereed) Published
Abstract [en]

The molecular structures of three types of zinc(II) alkanoates (Zn(C-n)(2), ZnNa2(C-n)(4) and ZaK(2)(C-n)(4), C-n = CH3(CH2)(n-2)COO-, n = 8-18) were investigated by Fourier transform infrared spectroscopy (FTIR) and powder X-ray diffraction (PXRD) to aid the study of degradation phenomena in oil paint. Each type of complex forms a homologous series in the studied chain length range. For (Zn(C-n)(2) and ZnNa2(C-n)(4), these homologous series indicate that the long-chain complexes have structures highly similar to those published for short-chain single-crystal analogs. Moreover, we introduce a chain tilt factor F-tilt to derive information about alkanoate chain angles from highly accurate PXRD long spacing values. The complex ZnK2(C-n)(4) has not been reported before. It consists of metal sheets containing tetrahedrally coordinated Zn atoms and octahedrally coordinated K atoms bridged by effectively monodentate carboxylate groups, and alkanoate chains that are tilted relative to the long axis.

Place, publisher, year, edition, pages
2014. Vol. 81, 335-340 p.
Keyword [en]
Zinc(II) alkanoates, Powder X-ray diffraction, Infrared spectroscopy, Homologous series, Chain tilt
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-156115DOI: 10.1016/j.poly.2014.06.030ISI: 000343339600043Scopus ID: 2-s2.0-84904540838OAI: oai:DiVA.org:kth-156115DiVA: diva2:777883
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QC 20150109

Available from: 2015-01-09 Created: 2014-11-21 Last updated: 2017-12-05Bibliographically approved

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