sup 77 Se NMR spectroscopic study of fluxional selenium sulfide 1,2,3,4,5-Se sub 5 S sub 2
Journal Article
·
· Inorganic Chemistry; (USA)
- Univ. of Oulu (Finland)
- Univ. of Joensuu (Finland)
The {sup 77}Se NMR spectrum has been recorded for the fluxional heterocyclic selenium sulfide 1,2,3,4,5-Se{sub 2}S{sub 5}, which has been prepared from the {sup 77}Se-enriched (Ti(C{sub 5}H{sub 5}){sub 2}Se{sub 5}) (enrichment 94%) and from S{sub 2}Cl{sub 2}. The spectrum shows three second-order multiplets at 1087.1, 1025.0, and 978.9 ppm (relative to Me{sub 2}Se) corresponding to a five-spin (AMM{prime}XX{prime}) system. A simulation enables the complete assignment of all transitions to be made and yields the refined values of all {sup 77}Se-{sup 77}Se coupling constants. The number of NMR signals, their coupling pattern, and the values of the spin-spin coupling constants are consistent with the concept of facile pseudorotation in the seven-membered chalcogen-containing ring molecules. 20 refs., 4 figs., 1 tab.
- OSTI ID:
- 6286392
- Journal Information:
- Inorganic Chemistry; (USA), Journal Name: Inorganic Chemistry; (USA) Vol. 29:15; ISSN 0020-1669; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
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Chalcogen ring interconversion pathways. [sup 77]Se NMR spectroscopic study of the decomposition of 1,2,3,4,5-Se[sub 5]S[sub 2] to 1,2,3,4,5,6-Se[sub 6]S[sub 2] and 1,2,3,4-Se[sub 4]S[sub 2]
/sup 77/Se NMR spectroscopic characterization of selenium sulfide ring molecules Se/sub n/S/sub 8-n/
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·
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· Inorg. Chem.; (United States)
·
OSTI ID:5648010
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Journal Article
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· J. Am. Chem. Soc.; (United States)
·
OSTI ID:5455164
Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
CHALCOGENIDES
DATA
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MOLECULAR STRUCTURE
NMR SPECTRA
NUCLEI
NUMERICAL DATA
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SELENIUM 77
SELENIUM COMPOUNDS
SELENIUM ISOTOPES
SELENIUM SULFIDES
SPECTRA
STABLE ISOTOPES
SULFIDES
SULFUR COMPOUNDS
400201* -- Chemical & Physicochemical Properties
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
CHALCOGENIDES
DATA
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MOLECULAR STRUCTURE
NMR SPECTRA
NUCLEI
NUMERICAL DATA
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SELENIUM 77
SELENIUM COMPOUNDS
SELENIUM ISOTOPES
SELENIUM SULFIDES
SPECTRA
STABLE ISOTOPES
SULFIDES
SULFUR COMPOUNDS