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Developer's Description

Chemissian is an application to manipulate molecular orbital energy-level diagrams (Hartree-Fock and Kohn-Sham orbitals), calculate and experiment UV-VIS electronic spectra, electronic or spin density maps, and prepare them for publication. Chemissian has a user-friendly graphical interface and lets you examine and visualize data from the output of Gaussian, US-Games, Firefly/PC-Games, Q-Chem, Molpro, NWChem, and Spartan quantum chemical program packages. Chemissian tool helps you to investigate nature of transitions in UV-vis spectra and bonding nature. Features include build molecular orbital energy level diagrams, build, visualize, and interpret UV-Visible spectra, analyze electronic density distribution, calculate populations and valences, calculate quantum-chemical bond order indexes and overlap populations, work with several calculations at the same time, and save the results in a single file.

Full Specifications

What's new in version 3.3


Release December 6, 2012
Date Added December 6, 2012
Version 3.3

Operating Systems

Operating Systems Windows 2000, Windows Vista, Windows, Windows 7, Windows XP
Additional Requirements None


Total Downloads 681
Downloads Last Week 0
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