A very strange molecule

General Discussion
1

Hi,
I’ve just discovered Avogadro and I tried to make a methanoic acid molecule.
I put an oxygen atom on a carbon and double-click
the CO bond then it becomes a C = O double bond.
Perfect.

Where the problem arises is if I click a second time, we
obtained a CO triple bond as you can see in attached file.

How is it possible for Avogadro to do such a molecule ? Is it a bug or
is there somewhere some option I have to select ?

Thanks in advance for reply,
best regards,

Physique et Chimie dans le secondaire et pour la préparation au CAPES
http://gwenaelm.free.fr/Physique
Du nouveau dans le Guppy
http://gwenaelm.free.fr/2008-9

2

Where the problem arises is if I click a second time, we
obtained a CO triple bond as you can see in attached file.

While I’m surprised at the hydrogen on the oxygen Avogadro does allow you to build “strange” molecules. Chemistry is vast and unusual, and people often want to do calculations or studies on unusual compounds. So yes, you can make a triple bond between carbon and oxygen, if you wish.

Thanks and best regards,
-Geoff

Prof. Geoffrey Hutchison
Department of Chemistry
University of Pittsburgh
tel: (412) 648-0492
email: geoff.hutchison@gmail.com
web: http://hutchison.chem.pitt.edu/