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Molecular integrals in terms of ellipsoidal gaussian-type orbitals

โœ Scribed by D.B. Cook; P.Th. van Duijnen


Publisher
Elsevier Science
Year
1971
Tongue
English
Weight
512 KB
Volume
8
Category
Article
ISSN
0009-2614

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๐Ÿ“œ SIMILAR VOLUMES


Hydrogen-type orbitals in terms of Gauss
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We express the hydrogen-type orbitals as integral transforms of Gaussian functions. The topographic features of the analytical expressions for the weight functions provide ways for the design of basis sets.

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Electronic momentum distributions and Compton profGes have been caieutated for a number of small pofyatomic molecuies in the STONG (N=3,4,5,6) approsimation. The gaussian expansions converge rapidly and give acceptable approximations to the corresponding ST0 values for most momentum space properties

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A method for the calculation of one-electron two-center integrals is described. Using an ellipsoidal coordinate system, both the overlap, kinetic energy, and nuclear attraction integrals are expressed in terms of the so-called sigma function w introduced by Baba-Ahmed et al. A. Baba-Ahmed and J. Gay