Conformational properties of 4,4,7,7-tetramethyl-2-hetero-1,3-dioxepanes
Journal Article
·
· Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States)
The authors have used NMR to study 4,4,7,7-tetramethyl-1,3-dioxepane, 2,2,4,4,7,7-hexamethyl-2-sila-1,3-dioxepane, and 2-oxa-4,4,7,7-tetramethyl-1,3,2-dioxathiepane. The proton and /sup 13/C NMR data are set out in tables. Proton NMR spectra were run on a Varian HA-100D spectrometer and carbon-13 spectra on a Bruker WH-90. The solvents used are noted. Concentrations were 1% for the proton spectra and 10-15% for carbon-13 spectra. 4,4,7,7-tetramethyl-1,3-dioxepane and 2,2,4,4,7,7-hexamethyl-2-sila-1,3-dioxepane exist in solution in the twist-boat conformation.
- Research Organization:
- V.I. Ulyanov (Lenin) State Univ., Kazan, USSR
- OSTI ID:
- 5736930
- Journal Information:
- Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States), Journal Name: Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States) Vol. 36:2; ISSN BACCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
640302 -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR MOMENTUM
CARBON 13
CARBON ISOTOPES
CONFORMATIONAL CHANGES
COUPLING
COUPLING CONSTANTS
ELECTRONEGATIVITY
ELECTRONIC STRUCTURE
EVEN-ODD NUCLEI
HETEROCYCLIC COMPOUNDS
HYBRIDIZATION
HYDROGEN 1
HYDROGEN ISOTOPES
HYPERFINE STRUCTURE
INTERMEDIATE COUPLING
ISOMERS
ISOTOPES
J-J COUPLING
LIGHT NUCLEI
LINE BROADENING
MOLECULAR STRUCTURE
NMR SPECTRA
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
PARTICLE PROPERTIES
SPECTRA
SPIN
STABLE ISOTOPES
STEREOCHEMISTRY
400201* -- Chemical & Physicochemical Properties
640302 -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR MOMENTUM
CARBON 13
CARBON ISOTOPES
CONFORMATIONAL CHANGES
COUPLING
COUPLING CONSTANTS
ELECTRONEGATIVITY
ELECTRONIC STRUCTURE
EVEN-ODD NUCLEI
HETEROCYCLIC COMPOUNDS
HYBRIDIZATION
HYDROGEN 1
HYDROGEN ISOTOPES
HYPERFINE STRUCTURE
INTERMEDIATE COUPLING
ISOMERS
ISOTOPES
J-J COUPLING
LIGHT NUCLEI
LINE BROADENING
MOLECULAR STRUCTURE
NMR SPECTRA
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
PARTICLE PROPERTIES
SPECTRA
SPIN
STABLE ISOTOPES
STEREOCHEMISTRY