lone pairs and S-group parents & children

The http://www.chemaxon.com/marvin page says that explicit lone pairs can be added to atoms in Marvin 3.4. I can't figure out how to do it. In the More window is a button labelled LP, but when I add it to an atom such as O, the O is underlined in red and the LP remains an LP and doesn't look like a pair of electrons. I'm using the Swing version on Safari on MacOS X.





Also, the page says that S-groups can now have parents and children. I suppose you may mean that S-groups are now capable of sexual reproduction, and if so, please convey my heartiest congratulations to them. But if you don't mean that, please explain what you do.

bobgr wrote:

The http://www.chemaxon.com/marvin page says that explicit lone pairs can be added to atoms in Marvin 3.4. I can't figure out how to do it. In the More window is a button labelled LP, but when I add it to an atom such as O, the O is underlined in red and the LP remains an LP and doesn't look like a pair of electrons. I'm using the Swing version on Safari on MacOS X.

At the moment, we use MDL's approach to display lone pairs (single bond to a node labelled LP). We know that this is far from being suggestive, but it was a logical step for compatibility reasons and it was easy to implement.





It is a bug that valence checking doesn't recognize LP nodes. We will fix that. (Actually, I thought that LP support will appear only in 3.5. This bug is caused by an internal communication problem.)





In version 3.5 the automatic calculation of LP-s will be supported. Try Edit>>Add>>Lone pairs at the site of the alpha version:


http://www.chemaxon.hu/shared/alpha/marvin/doc/dev/example-sketch1.1.html width="90%" cellspacing="0" cellpadding="3" border="0" align="center"> bobgr wrote: Also, the page says that S-groups can now have parents and children. I suppose you may mean that S-groups are now capable of sexual reproduction, and if so, please convey my heartiest congratulations to them. But if you don't mean that, please explain what you do. No, reproduction doesn't have to be sexual :-)


Maybe it would be more correct to say that the import and export of "embedded S-groups" have been implemented. (However, embedded sgroups cannot be created graphically yet.)





Thanks for the reports.


Ferenc