On 3/15/2013 2:21 PM, Robert Hanson wrote:
But I would argue that CO2 is sp hybridized, and the six left-over p orbitals form two orthogonal three-orbital pi sets. Isn't that necessary from symmetry considerations?

Bob


In the MO-sense, yes, but I am thinking about simple (freshman-level) hybridization scheme.


PM





On Fri, Mar 15, 2013 at 12:32 PM, Pshemak Maslak <p...@chem.psu.edu <mailto:p...@chem.psu.edu>> wrote:

    On 3/11/2013 2:18 PM, Robert Hanson wrote:
    Since when are they sp2 ? ;)

    Since freshman chemistry covered hybridization?

    I am guessing that there is no simple fix...

    PM






    On Mon, Mar 11, 2013 at 12:40 PM, Pshemak Maslak <p...@chem.psu.edu
    <mailto:p...@chem.psu.edu>> wrote:

        On 3/11/2013 12:58 PM, Robert Hanson wrote:
        Good catch, Michael. Yes, it's specifically a problem with
        "-sp3d" -- easily fixed.

        See http://chemapps.stolaf.edu/jmol/Jmol-13.zip and
        http://chemapps.stolaf.edu/jmol/jsmol.zip


        Bob

        I have lcaocartoon-related questions. For CO2 (for example)
the sp2 lone pair lobes are shown as the sp lobes instead. Similar outcome is observed for other linear molecules. Is
        that a general limitation?

I know that the cartoons lobes can be drawn and oriented (per demand) using "isosurface" command, but the lonepair
        dots are much harder if one wants them to keep up with
        molecular rotations and not eclipse each other at some
        orientations.

        Is there a simple way to deal with these issues?

        Thanks,

        PM







        On Sun, Mar 10, 2013 at 2:19 PM, Michael Evans
        <evan...@illinois.edu <mailto:evan...@illinois.edu>> wrote:

            Jmol'ers,
            I am having trouble using lcaocartoon in a very specific
            case. If you look on this page, the antibonding orbitals
            render fine:

            http://butane.chem.illinois.edu/jsmoore/Experimental/DFE.html

            However, on this updated version of the same page using
            either JSmol or Jmol 13.0.12, the last antibonding
            orbitals (C3-H6 and C2-H8) fail to render properly.

            
http://www.metallacycle.com/lec/chem332/jmolpages/difluoroethane/?use=java

            Those last antibonding orbitals use the "-sp3d" lobe,
            which appears not to render properly no matter what I
            try. I even tried back here with no success:

            http://chemapps.stolaf.edu/jmol/docs/examples-12/new.htm

            An sp3d lobe renders fine, but nothing happens when I
            try lcaocartoon create "-sp3d". Am I missing something?

            Cheers, Mike

            ---
            Michael Evans
            Department of Chemistry
            University of Illinois, Urbana-Champaign

            
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-- Robert M. Hanson
    Larson-Anderson Professor of Chemistry
    Chair, Chemistry Department
    St. Olaf College
    Northfield, MN
    http://www.stolaf.edu/people/hansonr


    If nature does not answer first what we want,
    it is better to take what answer we get.

    -- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900



    
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    Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the
    endpoint security space. For insight on selecting the right partner to
    tackle endpoint security challenges, access the full report.
    http://p.sf.net/sfu/symantec-dev2dev


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Larson-Anderson Professor of Chemistry
Chair, Chemistry Department
St. Olaf College
Northfield, MN
http://www.stolaf.edu/people/hansonr


If nature does not answer first what we want,
it is better to take what answer we get.

-- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900



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