Chemistry tools already packaged in Debian
[http://packages.qa.debian.org/o/openbabel.html openbabel]
[http://packages.qa.debian.org/p/polyxmass.html polyxmass]
[http://packages.qa.debian.org/x/xdrawchem.html xdrawchem]
[http://packages.qa.debian.org/o/openbabel.html openbabel]
[http://packages.qa.debian.org/p/polyxmass.html polyxmass]
[http://packages.qa.debian.org/x/xdrawchem.html xdrawchem]