ADDENDUM: STEREOCHEMISTRY AND SEVEN COORDINATION

Seven - Coordination . A Molecular Orbital Exploration of Structure , Stereochemistry , and Reaction Dynamics

S. F. A. Kettle, Inorg. Chem., 4, 1661 (1965). For a perceptive analysis of the uand r-bonding capabilities of CO, N2, and CNsee (a) K. G. Caulton, R. L. DeKock, and R. F. Fenske, J . Am. Chem. SOC.. 92. 515 (1970): (b) R. L. DeKock. A. C. SaraDu. and R. F. Fenske, Inorg. Chem., IO, 38(1971); (c) A. C. Sarapu and R. F. Fenske, ibid., 14, 247 (1975). G. Herzberg, “Spectra of Diatomic Molecules”,...

Epimerization and stereochemistry of avoparcin.

The epimerization of avoparcin entities is discussed in some detail. The absolute stereochemistry of avoparcin is now known since the N-methyl terminal amino acid of the aglycone has been isolated and shown to exhibit negative optical rotation and hence has the R-configuration. The same amino acid has been isolated from an epimerized solution of avoparcin and found to have positive rotation and...

Grøstl Addendum

This document is an addendum to the submission document of Grøstl, which was selected for the second round of NIST’s SHA-3 competition [18]. We stress that we do not change the specification of Grøstl. In other words, Grøstl is defined exactly as specified in the original submission document [8]. In this document we mention a few alternative descriptions of our SHA-3 candidate Grøstl and descri...

Addendum 2

Mechanistic inferences from stereochemistry.

I am still impressed that the textbook language of organic chemistry is so successful in explaining the reactions that we find in nature. Thismight not have been anticipated because we find that biological reactions are invariably stereospecific whereas nonbiological reactions are invariably not. This realization came to light about 150 years ago when Pasteur found that only half of chemically ...