Conformational Analysis. XVIII. The Relative Stabilities of the cis and trans A/B Ring Junctures of Steroidal 4 and 6 Ketones1,2

1961 ◽  
Vol 26 (10) ◽  
pp. 3626-3628 ◽  
Author(s):  
NORMAN L. ALLINGER ◽  
MARGARET A. DAROOGE ◽  
ROBERT B. HERMANN
Keyword(s):  
Conformational Analysis ◽  
Relative Stabilities ◽  
Cis And Trans

Conformational analysis. LIX. Relative stabilities of the cis- and trans-dimethylcyclohexanes

1968 ◽  
Vol 33 (2) ◽  
pp. 784-787 ◽  
Author(s):  
Norman L. Allinger ◽  
William Szkrybalo ◽  
Frederic A. Van Catledge
Keyword(s):  
Conformational Analysis ◽  
Relative Stabilities ◽  
Cis And Trans

Factors controlling the relative stabilities of cis- and trans-[PtX2L2] isomers: Chatt and Wilkins—50 years on

2002 ◽  
pp. 278-279 ◽  
Author(s):  
Jeremy N. Harvey ◽  
Katie M. Heslop ◽  
A. Guy Orpen ◽  
Paul G. Pringle
Keyword(s):  
Relative Stabilities ◽  
Cis And Trans

Effects of side chains in gas-phase amino acids: Conformational analysis and relative stabilities

2009 ◽  
Vol 901 (1-3) ◽  
pp. 81-87 ◽  
Author(s):  
Gang Yang ◽  
Lijun Zhou ◽  
Yuangang Zu ◽  
Yujie Fu ◽  
Rongxiu Zhu ◽  
...  
Keyword(s):  
Amino Acids ◽  
Conformational Analysis ◽  
Gas Phase ◽  
Side Chains ◽  
Relative Stabilities

Application of photoelectron spectroscopy to substituent effects. Conformational analysis of some flexible allylic ethers and alcohols

1979 ◽  
Vol 57 (14) ◽  
pp. 1890-1896 ◽  
Author(s):  
R. S. Brown ◽  
R. W. Marcinko ◽  
A. Tse
Keyword(s):  
Conformational Analysis ◽  
Gas Phase ◽  
Photoelectron Spectroscopy ◽  
Ionization Energy ◽  
Substituent Effects ◽  
Allylic Alcohol ◽  
Tert Butyl ◽  
Cis And Trans ◽  
Allylic Ethers

He(I) photoelectron (pe) spectroscopy is applied to determine the preferred gas phase conformations of a limited number of flexible allylic ethers and alcohols. Based on earlier observations that the π-ionization energy is increased more when the allylic C—O bond is coplanar (with the π-system) than when it is perpendicular, the pe spectrum of cis and trans-4-tert-butyl-2-cyclohexanol and their corresponding ethers, and 5α-hydroxy(and methoxy)-10α-Δ3-octalin have been determined. The results indicate that when a coplanar arrangement of the allylic C—O bond can be attained, it is preferred, leading to a favored conformation of the allylic alcohol or ether.

The relative stabilities of cis- and trans-A/B-1,6-dioxo-steroids

1966 ◽  
pp. 561
Author(s):  
J. E. Bridgeman ◽  
P. C. Cherry ◽  
W. R. T. Cottrell ◽  
Ewart R. H. Jones ◽  
P. W. Le Quesne ◽  
...  
Keyword(s):  
Relative Stabilities ◽  
Cis And Trans
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