Thermodynamic Properties of the Internal Rotator. Double Minimum with Repulsive Forces
dc.contributor.author | Halford, J. O. | en_US |
dc.date.accessioned | 2010-05-06T22:23:04Z | |
dc.date.available | 2010-05-06T22:23:04Z | |
dc.date.issued | 1948-04 | en_US |
dc.identifier.citation | Halford, J. O. (1948). "Thermodynamic Properties of the Internal Rotator. Double Minimum with Repulsive Forces." The Journal of Chemical Physics 16(4): 410-419. <http://hdl.handle.net/2027.42/70580> | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/70580 | |
dc.description.abstract | The basis for calculating the thermodynamic properties of the unsymmetrical internal rotator from energy levels derived from the old quantum theory is described, and a method is outlined for calculations with a potential energy function consisting of linked sections of cosine curve with the width of each section proportional to the barrier height. A table of values of a general quantum number index for the cosine function is presented and its application to the unsymmetrical internal rotator is illustrated. Thermodynamic properties are calculated for a double minimum system of optical isomers for which the forces restricting rotation must be repulsive. It is found that the entropy of such a system may be greater by nearly 0.5 unit than that of the limiting system with equal potential maxima, that is, with the symmetrical cosine potential function. | en_US |
dc.format.extent | 3102 bytes | |
dc.format.extent | 726621 bytes | |
dc.format.mimetype | text/plain | |
dc.format.mimetype | application/pdf | |
dc.publisher | The American Institute of Physics | en_US |
dc.rights | © The American Institute of Physics | en_US |
dc.title | Thermodynamic Properties of the Internal Rotator. Double Minimum with Repulsive Forces | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Physics | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Chemistry, University of Michigan, Ann Arbor, Michigan | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/70580/2/JCPSA6-16-4-410-1.pdf | |
dc.identifier.doi | 10.1063/1.1746905 | en_US |
dc.identifier.source | The Journal of Chemical Physics | en_US |
dc.identifier.citedreference | K. S. Pitzer and W. D. Gwinn, J. Chem. Phys. 10, 428 (1942). | en_US |
dc.identifier.citedreference | J. O. Halford, J. Chem. Phys. 15, 645 (1947). | en_US |
dc.identifier.citedreference | J. G. Aston, S. Iserow, G. J. Szasz, and R. M. Kennedy, J. Chem. Phys. 12, 336 (1944). | en_US |
dc.owningcollname | Physics, Department of |
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