By Dr. Alexander J. Pertsin, Professor Alexander I. Kitaigorodsky (auth.)
The background of physics furnishes many examples of ways an easy semiem pirical technique, primarily according to intuitive issues, may perhaps turn out to be even more profitable than a rigorous theoretical procedure. A pertinent instance is the strategy of atom-atom potentials, which treats the intermolec ular interactions among polyatomic molecules by way of pairwise inter activities among their constituent atoms. regardless of a number of conceptual brief comings, the strategy presents a pretty trustworthy functional technique of dealing with, on a microscopic point, a variety of difficulties that come up within the solid-state physics and chemistry of natural compounds. This monograph is an try to generalize the event won long ago two decades in analyzing the static and dynamic homes of natural molecular solids by way of atom-atom potentials. It embraces approximately all features of the appliance of the tactic, together with an review of cohesive energies, equilibrium crystal buildings, phonon spectra, ther modynamic capabilities, and crystal defects. Many similar subject matters resembling the impression of the crystal box on molecular conformation, the selection of crystal buildings from uncooked diffraction facts, and the matter of polymor phic transitions also are mentioned. We think that this publication could be of use to researchers in solid-state physics, chemistry, crystallography, actual chemistry, and polymer chem istry. It additionally provides us a chance to recognize our indebtedness to people who despatched us released in addition to unpublished info and sugges tions, together with A.T. Amos, E.L. Bokhenkov, H. Bonadeo, R.K. Boyd, C.P.