No valence error for O=N=O

User 870ab5b546

03-10-2014 15:47:15

In O=N=O, there is no valence error on the N atom, even though it should have a valence error in the absence of a +1 charge or a radical flag on the N atom. 

ChemAxon d26931946c

07-10-2014 13:52:45

The reason behind this is the MDL compatibility just like with the 5-valenced N.


We'll handle this together with that issue.


 

User 870ab5b546

07-10-2014 13:54:40

If it were the MDL compatibility issue, then an implicit H should appear on the N. But one does not.


You could fix the problem by having the implicit H appear. Then it would default to the problem of the ten-electron N.

User 870ab5b546

15-10-2014 19:57:21

Again, this error is only tangentially related to the MDL legacy issue. An implicit H atom should appear on N. Then you would have HN(=O)2, which would have a pentavalent N.