A molecular dynamics simulation of the melting points and glass transition temperatures of myo- and neo-inositol.
The heat of sublimation, density, melting point, and glass transition temperature are calculated for myo- and neo-inositol, using the condensed-phase optimized molecular potentials for atomistic simulation studies (COMPASS) force field and molecular dynamics techniques. Our results show that the calculated heats of sublimation and density are very close to the experimental values for both compounds. Furthermore, our simulated melting temperatures for myo- and neo-inositol also compare very well to the experimentally obtained data. The glass transition temperatures for myo- and neo-inositol have been calculated to be ca. 494 K and ca. 518 K, respectively, and the shape of the volume versus temperature plots produced are typical for a glass transition. As a result, it is our view that the COMPASS force field suitably describes these two compounds in molecular simulations and that molecular dynamics techniques, combined with this force field, can be used to simulate the melt and glass transitions for such molecules.
Watt
Stephen W
SW
Department of Chemistry, The Pfizer Institute for Pharmaceutical Materials Science, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom.
Chisholm
James A
JA
Jones
William
W
Motherwell
Sam
S