Stereochemistry of nucleic acids and their constituents. XI. Molecular structure and conformation of .alpha.-pseudouridine monohydrate, an unusual nucleoside with a glycosidic carbon-carbon bond

1970 ◽  
Vol 92 (16) ◽  
pp. 4950-4955 ◽  
Author(s):  
D. Rohrer ◽  
Muttaiya. Sundaralingam
Keyword(s):  
Molecular Structure ◽  
Nucleic Acids ◽  
Carbon Bond ◽  
Carbon Carbon Bond

An electron diffraction investigation of the peri -bonds in perylene

1965 ◽  
Vol 283 (1395) ◽  
pp. 557-575 ◽  
Keyword(s):  
Molecular Structure ◽  
Electron Diffraction ◽  
Bond Length ◽  
Bond Distance ◽  
Diffraction Method ◽  
Vapour Phase ◽  
Electron Diffraction Investigation ◽  
Carbon Bond ◽  
Carbon Carbon Bond ◽  
Naphthalene Molecule

The molecular structure of perylene has been studied in the vapour phase by the sector electron diffraction method. The average carbon-carbon bond distance in perylene apart from the peri -bonds was found to be about 0·010 Ǻ longer than the average carbon-carbon bond distance in the naphthalene molecule. The peri -bond length was determined to be 1·493 ± 0·015 Ǻ.

scholarly journals 2-(6-Bromobenzo[d]thiazol-2-yl)-5,5-dimethylthiazol-4(5H)-one

2013 ◽  
Vol 69 (12) ◽  
pp. o1821-o1821
Author(s):  
Hendryk Würfel ◽  
Helmar Görls ◽  
Dieter Weiss ◽  
Rainer Beckert
Keyword(s):  
Molecular Structure ◽  
Double Bond ◽  
Torsion Angle ◽  
Title Compound ◽  
Carbon Bond ◽  
Double Bond Character ◽  
Compound C ◽  
Carbon Carbon Bond ◽  
Bond Character ◽  
Reflux Temperature

The title compound, C12H9BrN2OS2, was obtained by reacting 6-bromobenzo[d]thiazole-2-carbonitrile iniso-propanol with ethyl 2-mercapto-2-methylpropanoate at reflux temperature for several hours. The resulting dimethyloxyluciferin derivative shows partial double-bond character of the carbon–carbon bond between the two heterocyclic moieties [C—C = 1.461 (3) Å]. This double bond restricts rotation around this C—C axis, therefore leading to an almost planar molecular structure [N—C—C—S torsion angle = 9.7 (3)°]. The five-membered thiazoline ring is not completely planar as a result of the bulky S atom [C—S—C—C torsion angle = 5.17 (12)°].

Sign in / Sign up

Export Citation Format

Share Document