Ab initio SCF and SCF-CI calculations with the STO-3G basis set have been performed to investigate the structures and energies of water-cytosine complexes and the intermolecular water-cytosine surface in the cytosine molecular plane. Although there are six nominal hydrogen-bonding sites in this plan
Molecular orbital theory of bond separation
β Scribed by R. Ditchfield; W.J. Hehre; J.A. Pople; L. Radom
- Publisher
- Elsevier Science
- Year
- 1970
- Tongue
- English
- Weight
- 193 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
A bond separation reacfion is defined as the process in \-hich a polyatomic molecule is separated into the simplest molecules containing the same component bonds. The energies associated with such reac- tions are calculated for a series of polyatomic molecules using ab initio molecular orbital theory n%th a basis of cantracted Gaussian functions. The results are in good agreement \ith experimental values.
π SIMILAR VOLUMES
The simple valence bond method is formulated in terms of fermion spin waves. For linear chains, rings containing 4n+2 atoms, and polyacenes, we obtain a close formal correspondence to mofecufar orbital theory of the Pariser-Parr-Popfe type. This correspondence however is not obtained for large conde
Iunited multi-confiiuratxon sdf-conszstent field (SiC SW) theory is presented, m \\*h& aJ.l the hx&iy occupred orbnats are associated uith ore Fork-like operator. rrhde the we&& occupied ones zre nssofiated \%ith .I second fock-i&e operrttor. Results for H-, and J&8 are presented ss successful tests
## Hartree-Fock theory and density functional theory were used to compute the enthalpy and entropy changes of dimerization for a number of hydrogen-bonding compounds. In Part 1, the calculational methods and procedures use for the water dimer are described, and the results obtained are compared with
## Abstract __Ab initio__ SCF calculations with the STOβ3G basis set have been performed to determine the structure and stability of a 6:1 water:uracil heptamer in which water molecules are hydrogen bonded to uracil at each of the six hydrogenβbonding sites in the uracil molecular plane. The struct