home *** CD-ROM | disk | FTP | other *** search
Text File | 1996-02-02 | 1.5 KB | 28 lines | [TEXT/R*ch] |
- HMO-plus 2.0.2 executes molecular orbital calculations on the
- Macintosh computer for structures containing up to one hundred
- atoms. A number if different types of molecular orbital
- calculations can be performed; these include simple Hueckel,
- omega-technique, improved two parameter omega-technique (ITPOT),
- and SCF (Pariser-Parr-Pople approximation) calculations. The
- program is highly interactive and simply requires that the
- structure of a target molecule be drawn with the mouse by
- selecting any desired rings or heteroatoms from a palette. The
- program automatically constructs the secular determinant from the
- supplied structure and computes the eigenvectors and eigenvalues
- by the Jacobi diagonalisation method. The output of the program
- can be displayed in both graphic and tabular form and includes
- the empirical formula, number of atoms, number of pi-electrons,
- secular determinant, eigenvalues, total energy, delocalization
- energy, delocalization energy per pi-electron, eigenvectors,
- charge densities, dipole moment, total charge, electron
- density-bond order matrix, electrophilic, radical, and
- nucleophilic superdelocalizabilities, mutual and self-atom
- polarizabilities, and freevalences. The program also displays a
- color diagram of the pi-electrostatic potential.
-
- This newest version of the program displays color diagrams of the
- molecular orbitals, the atom-centered, bond-centered, or total
- pi-electron populations, and a pi-electron density difference map
- that are constructed using STOs. Full documentation and some
- sample calculations are included.
-