Chemical Structures #chemtex<>package chemtex #xymtex<>package ochem #ppchtex<>PPCHTeX #xymtex<>package xymtex #symbol<>Symbols A lot of non-tex chemical-packages: http://sal.kachinatech.com/Z/2/index.shtml

PPCHTeX links

PPCHTeX at pragma-ade (Scroll for chemistry)

Manuels page

Symbols

\newcommand{\nucl}[3]{%
  \ensuremath{%
    \phantom{\ensuremath{^{#1}_{#2}}}%
    \llap{\ensuremath{^{#1}}}%
    \llap{\ensuremath{_{\rule{0pt}{.75em}#2}}}%
    \mbox{#3}%
  }%
}

and in the text you can use it in mathmode, too $\nucl{235}{92}{U}$

Package chemtex
Write in latex preamble

\usepackage{chemtex}

and in text in tex (red) for example

\initial
\parbox{.3\textwidth}{\hetisix{Q}{Q}{Q}{Q}{Q}{Q}{O}{Q}{O}\xi=-85\fuseup{Q}{Q}{Q}{Q}{D}{Q}{D}{Q}{D}}

put all in one line! The output is a chemical structure

The whole package maybe part of your local tex-installation. Otherwise it's available at CTAN.

Package xymtex
This package needs some more packages, especially epic.sty. For the following example write in preamble

\usepackage{epic,carom,hetarom}

and in text in tex (red)

\decaheterov[aegi]{4==0}{3D==0}

Which gives the chemical structure:

The whole package maybe part of your local tex-installation. Otherwise it's available at CTAN.

Package ochem
ochem is a very powerful package and has a lot of options.

\usepackage{ochem}

and in text in tex (red)

\begin{chemistry}
formula(L,R,"A chemical structure",HR,20)
            { ring(){ 5: ring(,1,H){3: atom("O");4:
             bond(30,=C) atom("O");}
                                    ;}
                                                }
 \end{chemistry}

The package produces the file <name>.chm. on this ochem needs a run with the perl program chemie.pl, which is part of the package.

The image was produced by Kenward Vaughan kaynjay@igalaxy.net

The whole package maybe part of your local tex-installation. Otherwise it's available at CTAN