Semiempirical Use of Chirality Functions for the Description of the Optical Activity of Methane Derivatives in the Transparent Region

1973 ◽  
Vol 12 (1) ◽  
pp. 30-36 ◽  
Author(s):  
Wolf J�rgen Richter ◽  
Bernd Richter ◽  
Ernst Ruch
Keyword(s):  
Optical Activity ◽  
Chirality Functions ◽  
Transparent Region

Experimentelle Prüfung von Näherungsansätzen für Chiralitätsfunktionen am Beispiel der optischen Aktivität von Methan-Derivaten im Transparenzgebiet II / Semiempirical Use of Chirality Functions for the Description of the Optical Activity of Methan Derivatives in the Transparent Region II

1978 ◽  
Vol 33 (2) ◽  
pp. 165-172 ◽  
Author(s):  
Wolf Jürgen Richter
Keyword(s):  
Optical Activity ◽  
Amino Alcohol ◽  
Rotatory Power ◽  
Optical Rotatory ◽  
Chirality Functions ◽  
Transparent Region ◽  
Region Ii ◽  
Optical Rotatory Power

Simple alcohol derivatives are used to test approximative chirality functions experimentally. The approximations of the type 1 b yield a competent description of the optical rotatory power of methan-derivatives. Provided that certain restrictions of ligand inter-actions are taken into account, a set of ligand-specific parameters is obtained; however, no common set of parameters is suitable for both the alcohol and the amino-alcohol derivatives, which have been published before

Outer-sphere interaction of (S)-asparagine and (S)-glutamine with [Co(NH3)6]3+ ion and its possible role in ligand substitution

1987 ◽  
Vol 52 (10) ◽  
pp. 2457-2459
Author(s):  
František Jursík
Keyword(s):  
Amino Acids ◽  
Transition Region ◽  
Alkaline Medium ◽  
Optical Activity ◽  
Substitution Reaction ◽  
Outer Sphere ◽  
Ligand Substitution ◽  
Cotton Effect ◽  
Negative Cotton Effect

Optical activity of the achiral cation [Co(NH3)6]3+ is induced both by (S)-AsnONa and (S)-GlnONa, as shown by a negative Cotton effect in the 1A1g → 1T1g transition region. An outer-sphere interaction by three-point attachment of the amides can explain the fact that substitution reaction of [Co(NH3)6]3+ with the mentioned amides in an alkaline medium is unusually slow as compared with other amino acids.

Structural characterization of proteins and viruses using Raman optical activity

2004 ◽  
Vol 35 (1-2) ◽  
pp. 87-92 ◽  
Author(s):  
Ewan W Blanch ◽  
Iain H McColl ◽  
Lutz Hecht ◽  
Kurt Nielsen ◽  
Laurence D Barron
Keyword(s):  
Optical Activity ◽  
Structural Characterization ◽  
Raman Optical Activity
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