[NTG-ppchtex] Your Help Please

Angelo R. Rossi arossi at rcn.com
Fri Sep 24 00:18:10 CEST 2004


I am trying to use ppchtex to draw Lewis electron dot structures for 
molecules using ppchtex and am having trouble doing this.

 I was a subscriber to the ppchtex mailing list, but I recently left IBM 
for a job in academics. 

I am hoping you could answer me directly, since I am trying to do use 
ppchtex for a Chemistry examination I am writing.

Description of the Problem
Suppose I have CCl4.  The carbon atom is in the center and is surrounded 
by 4 chlorine atoms.  I have no problem using ppchtex to do this.   But, 
each Cl atom has 6 lone pair electrons around
it like this
 : Cl :
How do I do this with ppchtex.  The electrons seem to always "fall" to 
the central atom (Z0) of the ONE structure.  There doesn't seem to be 
any way to put electrons around atoms other than the central atom with 
the ONE structure.

Can you please give me suggestions?

Kind regards,


More information about the ntg-ppchtex mailing list