%SUBJECT: File CHEMF45.TEX
 
\hbox{\vbox{
\hbox to 0.5\hsize{\hss
\structure{\emostaromatatom{C}\swsingle\smostaromatatom{C}\wsingle
\atom{C}\nnwsingle\wmostaromatatom{C}\nnesingle\nmostaromatatom{C}
\esingle\atom{C}\sesingle\wmostaromatatom{C}\nesingle
\nmostaromatatom{C}\ssesingle\emostaromatatom{C}\sswsingle
\smostaromatatom{C}\nwsingle\phantatom{C}\nsingle\phantatom{C}}
\hss}
\vskip 1truecm
\hbox to 0.5\hsize{\hss\it Fig.~4: The azulene ring system.\hss}
}\vbox{
\hbox to 0.5\hsize{\hss
\structure{\firstbicycloatom{C}\nnwsingle\atom{C}\eneabove\atom{C}
\eseevoba\atom{C}\sswsingle\secondbicycloatom{C}}
\hss}
\vskip 1truecm
\hbox to 0.5\hsize{\hss\it Fig.~5: The envelope form of cyclopentane.\hss}
}}