CCL:G: vibrational frequency output of GO3W



 Sent to CCL by: "Abrash, Samuel" [sabrash%richmond.edu]
 What Errol was saying (below) is that by animating the vibration, you
 can see with your eyes which motions are dominant, and can therefore
 assign them as C-H stretch, scissor etc.
 Samuel A. Abrash
 Department of Chemistry
 University of Richmond
 Richmond, VA 23173
 Phone:  804-289-8248
 Fax:  804-287-1897
 E-mail:  sabrash#%#richmond.edu
 Web-page:  http://oncampus.richmond.edu/~sabrash
 "The time it takes to do a scientific project is given by the equation t
 = 2a + b, where a is the original estimate of the length of the project,
 2 is a correction factor, and b is a number large compared to 2a."
 -----Original Message-----
 > From: owner-chemistry#%#ccl.net [mailto:owner-chemistry#%#ccl.net]
 Sent: Sunday, September 03, 2006 12:26 PM
 To: Abrash, Samuel
 Subject: CCL:G: vibrational frequency output of GO3W
 Sent to CCL by: "neeraj misra" [misraneeraj[-]gmail.com]
 ------=_Part_44335_29083124.1157296455377
 Content-Type: text/plain; charset=ISO-8859-1; format=flowed
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 Content-Disposition: inline
 Thanks for the reply! Actually it is not that I want to animate the
 vibrations, instead I wish to write the different modes corresponding to
 a
 particular frequency.How to identify the modes for example whether it is
 a
 C=O stretch or C-C stretch etc.Any help would be a big help.
                 Thanks in advance
 On 9/3/06, errol lewars elewars^-^trentu.ca <owner-chemistry(a)ccl.net>
 wrote:
 >
 > Sent to CCL by: errol lewars [elewars!=!trentu.ca]
 > 2006 Sept 3
 >
 > Hello,
 >
 > If what you mean is that you want to see what kind of atomic motion
 each
 > vibrational frequency corresponds to (stretch, bend, torsional, or
 some
 > combination of these), then you should use a program that can animate
 > the vibrations, such as GaussView; there are also free programs that
 can
 > do this. You may be able to puzzle out the motions from the "direction
 > vectors" (Cartesian components of the atomic motions) that Gaussian
 > prints out, but this is much less satisfactory.
 >
 > E. Lewars
 > ====
 >
 >
 > neeraj misra misraneeraj/./gmail.com wrote:
 >
 > >Sent to CCL by: "neeraj  misra" [misraneeraj#,#gmail.com]
 > >Dear ccl'ers, I would be grateful if someone of you could advise me
 how
 > to pick up the assignments (potential energy distributions) in the
 > vibrational analysis output of a gaussian 03 W run.I have done the
 > vibrational analysis but how to know that which mode (i.e stretch,
 angle
 > bend, wag, torsion) is having significant contribution at a particular
 > frequency.Anyone who can explain with a gaussian vibrational freq
 example
 > would be a big help.I realise its a trivial question but it does
 matter to
 > someone like me who has just started in this.
 > >                               thanks in advance
 > >                                                  neeeraj>
 >
 >
 >
 --
 Neeraj Misra PhD
 Assoc.Prof in Physics
 Lucknow University 226007
 Phone 0522-2740410 (O)
           0522-2335914 (R)
 ------=_Part_44335_29083124.1157296455377
 Content-Type: text/html; charset=ISO-8859-1
 Content-Transfer-Encoding: 7bit
 Content-Disposition: inline
 <div>Thanks for the reply! Actually it is not that I want to animate the
 vibrations, instead I wish to write the different modes corresponding to
 a particular frequency.How to identify the modes for example whether it
 is a C=O stretch or C-C stretch
 etc.Any help would be a big help.</div>
 <div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&
 nbsp;&nbsp;&nbsp;&nbsp; Thanks in
 advance<br><br>&nbsp;</div>
 <div><span class="gmail_quote">On 9/3/06, <b
 class="gmail_sendername">errol lewars elewars^-^trentu.ca</b>
 &lt;<a
 href="mailto:owner-chemistry(a)ccl.net">owner-chemistry(a)ccl.net</a>&gt
 ; wrote:</span>
 <blockquote class="gmail_quote" style="PADDING-LEFT: 1ex;
 MARGIN: 0px
 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Sent to CCL by: errol lewars
 [elewars!=!trentu.ca]<br>2006 Sept
 3<br><br>Hello,<br><br>If what you
 mean is that you want to see what kind of atomic motion each
 <br>vibrational frequency corresponds to (stretch, bend, torsional, or
 some<br>combination of these), then you should use a program that can
 animate<br>the vibrations, such as GaussView; there are also free
 programs that can
 <br>do this. You may be able to puzzle out the motions from the
 &quot;direction<br>vectors&quot; (Cartesian components of the
 atomic
 motions) that Gaussian<br>prints out, but this is much less
 satisfactory.<br><br>E. Lewars
 <br>====<br><br><br>neeraj misra misraneeraj/./gmail.com
 wrote:<br><br>&gt;Sent to CCL by:
 &quot;neeraj&nbsp;&nbsp;misra&quot;
 [misraneeraj#,#gmail.com]<br>&gt;Dear ccl'ers, I would be grateful if
 someone of you could advise me how to pick up the assignments (potential
 energy distributions) in the vibrational analysis output of a gaussian
 03 W
 run.I have done the vibrational analysis but how to know that which mode
 (i.e stretch, angle bend, wag, torsion) is having significant
 contribution at a particular frequency.Anyone who can explain with a
 gaussian vibrational freq example would be a big
 help.I realise its a trivial question but it does matter to someone like
 me who has just started in
 this.<br>&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp
 ;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp
 ;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
 thanks in
 advance<br>&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb
 sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb
 sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb
 sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb
 sp;&nbsp;&nbsp;&nbsp;&nbsp;neeeraj&gt;
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 quote></div><br><br clear="all"><br>--
 <br>Neeraj Misra
 PhD<br>Assoc.Prof in Physics<br>Lucknow University
 226007<br>Phone
 0522-2740410
 (O)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0522-
 2335914 (R)
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