This was a bug in the UFF calculation setup. It was just assigning the wrong set of parameters to carbocations and carbanions.
It's fixed and uploaded to
There should be no need for a boron work-around.
2-propyl cation gives me a planar carbocation.
Safari 4.0.5, Mac OS X 10.6.3
I forgot to do this last night at home. I have some older Macs I can test it on tonight.
On Apr 26, 2010, at 9:24 PM, Philip Bays wrote:
> I see the flat structure with the t-butyl cation.
> On Apr 25, 2010, at 10:06 PM, Otis Rothenberger wrote:
>> This is a request for a Mac user test of a page. I'm trying to create
>> the appearance of a JME to Jmol loading of a planar carbocation.
>> Admittedly, this is a work around, but it's a work around of UFF not
>> Jmol. The following works on Windows (MSIE, Firefox, and Chrome), but
>> apparently there are Mac issues:
>> On http://www.che.ilstu.edu/osrothen/web_molecules/script_page_large.aspx
>> 1) Click Display Molecular Editor.
>> 2) On the subsequent control screen click Draw.
>> 3) Draw a simple carbocation - e.g. 2-propyl cation.
>> 4) Click Load Model.
>> On Windows, I consistently see a planar carbocation. On Mac, I have a
>> problem report.