%SUBJECT: File CHEMF8.TEX \vbox{ \centerline{\structure{\nopositioncheck \atom{O}\etriple\atom{C}\esingle\firstbicycloatom{Fe} \side{\nwsingle\atom{C}\nwtriple\atom{O}} \side{\swsingle\atom{C}\swtriple\atom{O}} \sesingle\atom{C}\side{\sdouble\atom{O}}\nesingle\phantatom{Fe} \side{\esingle\atom{C}\etriple\atom{O}} \side{\sesingle\atom{C}\setriple\atom{O}} \side{\nesingle\atom{C}\netriple\atom{O}} \nnwsingle\secondbicycloatom{C}\side{\nnedouble\atom{O}} \ssephantom\firstbicycloatom{Fe}\swphantom\phantatom{C}\nwphantom \phantatom{Fe}\nnesingle\secondbicycloatom{C}\side{\nnwdouble\atom{O}} \sswphantom\firstbicycloatom{Fe}\sephantom\phantatom{C}\nephantom \secondbicycloatom{Fe}}} \vskip 1truecm \centerline{\it Fig.~8: Tri-$\mu$-carbonyl-bis(tricarbonyliron)} }