[NTG-ppchtex] Your Help Please

[Tobias Burnus]

Hello,

Angelo R. Rossi wrote:

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

> 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 following works for me:
\startchemical
   \chemical[ONE,Z0,
             PB:Z1,ONE,Z0,ED1,SB5,PE,
             PB:Z3,ONE,Z0,ED3,SB7,PE,
             PB:Z5,ONE,Z0,ED5,SB1,PE,
             PB:Z7,ONE,Z0,ED7,SB3,PE]
            [C,Cl,Cl,Cl,Cl]
\stopchemical

Regards,

Tobias