major and minor electron-flow arrow problems

Hello,

Major problem: I have a devil of a time starting an electron-flow arrow at a lone pair of an atom such as N. The "activation zone" around the lone pair is incredibly small. It usually takes me about 5-10 tries to hit it. Please make it larger.

Minor problem: I can change the arc of an electron-flow arrow, but the arc parameters are evidently not stored in the MRV, because if I export the structure and then import it back, the arc changes back to its original appearance.

-- Bob

Dear Bob,

In Marvin JS you have the ability to magnify the atoms, and their lone pairs when you need it.

Just select the Electron flow arrow tool and then left-click on the atom where you would like to start the drawing.

Now you can select the electron(s) where you would like to start the electron flow arrow.

If this feature is not working for you, please, give us some information about the operating system and the browser you use.

 

As far as the "Minor problem" is concerned, it is a missing feature indeed, we made an item in our backlog about it.

Thank you for your remarks. 

Best Regards,

Eszter

eszabo wrote:

Dear Bob, In Marvin JS you have the ability to magnify the atoms, and their lone pairs when you need it. Just select the Electron flow arrow tool and then left-click on the atom where you would like to start the drawing. Now you can select the electron(s) where you would like to start the electron flow arrow. If this feature is not working for you, please, give us some information about the operating system and the browser you use.

Ahhhh... Yes, it works. I did not realize that click-holding on the enlarged lone pair would select that lone pair as the electron source. Thanks!

 

On the current version of MarvinJS (v15.11.12), if I draw a simple molecule like methanol, I can only seem to draw electron flow arrows from the C-O bond.

https://marvinjs-demo.chemaxon.com/latest/

 

Is there a reason I can't seem to start the electron flow arrow on the oxygen atom (or any atom for that matter)? Even if I do the click-hold suggested above, it doesn't seem to work. It seems impossible to highlight an atom, and therefore impossible to start an electron flow arrow.

 

If you turn on lone pair display, you can start an arrow at the lone pair.

Thanks Bob!

Hi Bob,

Thank you for the reply. 

Regards,
Eszter 

Hi ucc_chemistry,

If you need more details on how this tool works, you can check it here.

Kind regards,
Eszter