| High-pressure Fourier transform micro-Raman spectroscopic investigation of diiodine-heterocyclic thioamide adducts. | |
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MedLine Citation:
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PMID: 12396055 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The pressure dependences of the Fourier transform micro-Raman spectra of four heterocyclic thioamides [[(bztzdtH)I2] x I2] (1) (bztzdtH = benzothiazole-2-thione), [(bztzdtH)I2] (2), [[(tzdtH)2I+] x I3- x 2I2] (3) (tzdtH = thiazoline-2-thione), and [[(bzimtH)I2]2 x I2 x 2H2O] (4) (bzimtH = benzimidazole-2-thione) have been studied between ambient pressure and 50 kbar. For 1, generation of I3- ions through disproportionation reactions is evident as the pressure is increased. There are empirical linear correlations between the frequency and (I-I) bond length and the applied pressure. The iodine adduct of thioamide 2 is more sensitive to pressure when compared to the 1 or 4 iodine adducts. This difference in behavior may be attributed to differences in crystal structures or to a lower I-I bond order. Monitoring of other vibrational transitions of the thiomide structure reveals several less important pressure dependences. |
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Authors:
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João Henrique Z dos Santos; Ian S Butler; Vasiliki Daga; Sotiris Hadjikakou; Nick Hadjiliadis |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Volume: 58 ISSN: 1386-1425 ISO Abbreviation: Spectrochim Acta A Mol Biomol Spectrosc Publication Date: 2002 Oct |
Date Detail:
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Created Date: 2002-10-24 Completed Date: 2003-06-23 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9602533 Medline TA: Spectrochim Acta A Mol Biomol Spectrosc Country: England |
Other Details:
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Languages: eng Pagination: 2725-35 Citation Subset: IM |
Affiliation:
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Department of Chemistry, McGill University, Montreal, Que., Canada. jhzds@iq.ufrgs.br |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Fourier Analysis Heterocyclic Compounds / chemistry Iodine Compounds / chemistry Microscopy Pressure Spectrum Analysis, Raman / instrumentation, methods* Thioamides / chemistry* |
| Chemical | |
Reg. No./Substance:
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0/Heterocyclic Compounds; 0/Iodine Compounds; 0/Thioamides |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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