Re: [Jmol-users] Finally! A nice cyclohexane chair/chair flip demo

2011-02-28 Thread Otis Rothenberger
Bob, I can get the translated coordinates and frame adjustments from the state script of your page, so I have no problem loading your adjusted data for Hen's file. But I have looked at that file for years and said, Boy I'd like to translate the those coordinates. So, just as a Jmol learning

Re: [Jmol-users] Finally! A nice cyclohexane chair/chair flip demo

2011-02-28 Thread Robert Hanson
load http://wetche.cmbi.ru.nl/organic/cyclohexane/jm/chxinv.xyz for (var i = 1; i 35; i++) { var j = i+1;compare {model=j} {model=i} ROTATE TRANSLATE 0.0 } There are 35 models. This runs through the models, rotating and translating each model to be the best match to the previous model in the

Re: [Jmol-users] Finally! A nice cyclohexane chair/chair flip demo

2011-02-28 Thread Otis Rothenberger
To: osrot...@chemagic.com, jmol-users@lists.sourceforge.net Subject: Re: [Jmol-users] Finally! A nice cyclohexane chair/chair flip demo load http://wetche.cmbi.ru.nl/organic/cyclohexane/jm/chxinv.xyz for (var i = 1; i 35; i++) { var j = i+1;compare {model=j} {model=i} ROTATE TRANSLATE 0.0

Re: [Jmol-users] Finally! A nice cyclohexane chair/chair flip demo

2011-02-28 Thread Robert Hanson
-- *From*: Robert Hanson hans...@stolaf.edu *Sent*: Monday, February 28, 2011 9:13 PM *To*: osrot...@chemagic.com, jmol-users@lists.sourceforge.net *Subject*: Re: [Jmol-users] Finally! A nice cyclohexane chair/chair flip demo load http://wetche.cmbi.ru.nl/organic/cyclohexane

Re: [Jmol-users] Finally! A nice cyclohexane chair/chair flip demo

2011-02-27 Thread Robert Hanson
It sure would be a service to all organic students if someone were to create a good, interactive web page that draws from Hens' page and shows using Jmol the smooth transition from chair to chair via half-twist (I was calling this twist-chair) and twist (I was calling this twist-boat) as well as

Re: [Jmol-users] Finally! A nice cyclohexane chair/chair flip demo

2011-02-26 Thread Robert Hanson
Henry, it took a little fixing of Jmol, but I was able to visualize the symmetry there, and this is what I came up with: The path takes us from D2d through C2 (twist chair) to D2 (twist boat) to C2 (twist chair) to D2d again. The plane of symmetry is broken immediately with the first twist, and

Re: [Jmol-users] Finally! A nice cyclohexane chair/chair flip demo

2011-02-23 Thread Rzepa Henry
On 23 Feb 2011, at 01:33, Robert Hanson wrote: Well, at least I think so http://chemapps.stolaf.edu/jmol/docs/examples-12/jmol-flot-energy.htm?model=data/cyclohexaneFlip.jmol Please let me know if that does not work for you. Bob, The issue of whether the path passes through a boat

Re: [Jmol-users] Finally! A nice cyclohexane chair/chair flip demo

2011-02-23 Thread Hens Borkent
Op 23-2-2011 10:12, Rzepa Henry schreef: I appreciate a debate on this topic may or may not be suited for the Jmol list, but if anyone wants to add their opinion, I would welcome this, if only because my synthetic organic chemistry colleagues need to know what the most realistic

Re: [Jmol-users] Finally! A nice cyclohexane chair/chair flip demo

2011-02-23 Thread Robert Hanson
Hens! Good to hear from you. I hope you don't mind my co-opting your model -- reminds me that I need to put a link to WeTChe there. I'd love a little discusson of this, because I'd like to get this out there. My understanding is that both are correct -- the boat transition state is lower than the

Re: [Jmol-users] Finally! A nice cyclohexane chair/chair flip demo

2011-02-23 Thread Robert Hanson
Henry, so you are saying you think something is wrong with that pathway. From what I can see, there are two possible pathways from the chair -- one with a twist to the left; one with a twist to the right. The enatiomeric twist is not depicted. (Although I think you could invert the configuration

[Jmol-users] Finally! A nice cyclohexane chair/chair flip demo

2011-02-22 Thread Robert Hanson
Well, at least I think so http://chemapps.stolaf.edu/jmol/docs/examples-12/jmol-flot-energy.htm?model=data/cyclohexaneFlip.jmol Please let me know if that does not work for you. This is identical to the original from http://wetche.cmbi.ru.nl/organic/cyclohexane/jm/chxjmol.html produced by