%SUBJECT: File CHEMF7.TEX \vbox{ \centerline{ \structure{\nopositioncheck\atom{H}\sesingle \atom{B}\side{\nesingle\atom{H}} \sseabove\atom{H}\sswevoba\atom{B} \side{\nnwbelow\atom{H}\nnebelow\phantatom{B}} \side{\swsingle\atom{H}}\sesingle\atom{H}} } \vskip 1truecm \centerline{\it Fig.~7: Diborane} }