Comments for Chemistry 324 - Spring 2009

Comment on Exam #1 – download here by Exam #2 - Download here « Chemistry 324 - Spring 2009

Exam #2 - Download here « Chemistry 324 - Spring 2009 — Sat, 18 Apr 2009 20:39:42 +0000

[...] Ground rules are the same as those for exam #1. [...]

Comment on Papers by Ian MacDonald

Ian MacDonald — Fri, 27 Mar 2009 02:33:34 +0000

Okay, cool. Thanks

Comment on Papers by Alan

Alan — Thu, 26 Mar 2009 20:05:59 +0000

I think I understand. Just use the data listed on page S-5. The Supporting Info doesn’t contain physical copies of any of the spectra for compound 3.

Comment on Papers by Ian MacDonald

Ian MacDonald — Thu, 26 Mar 2009 19:05:33 +0000

I found the spectral data, chem shift and splitting patterns and what-not, however the instructions say to look at the NMR spectra itself, that is what I cannot find.

Comment on Papers by Alan

Alan — Thu, 26 Mar 2009 18:02:18 +0000

Ian – I don’t see “selected spectra” Are you looking at the Supporting Info file (48 pages)? I had no problem finding data for compound 3 in the Supporting Info, page S-5.

Comment on Papers by C. Bailey

C. Bailey — Thu, 26 Mar 2009 17:59:37 +0000

if you go to the experimental section where they write up the syntheses of each compound they list spectral data. I found the spectra data for compound 3 there.

Comment on Papers by Ian MacDonald

Ian MacDonald — Thu, 26 Mar 2009 00:42:18 +0000

I am having difficulty finding the NMR spectra for compound 3. The synthesis lists the spectral data, but when you scroll down to the “selected spectra” there is not one for 3.

Comment on Homework by Alan

Alan — Wed, 25 Mar 2009 23:34:54 +0000

I have add two pages of drawings and comments to the answers for HW #6. *Many* of your orbital array drawings were fine, but when the going got tough, the drawing quality/detail sometimes suffered. Just what anyone would have predicted. So look at my drawings and make sure that you understand what is required in this respect.

Comment on Homework by Alan

Alan — Tue, 24 Mar 2009 02:02:42 +0000

HW #7 correction. Problem #3b should say “diester” and not “diketone” (both times). I’ll post a corrected assignment after dinner.

Comment on ZPE corrections by Alan

Alan — Mon, 23 Mar 2009 05:14:40 +0000

Ian – The instructions say calculate the “reaction energy and barrier”. Each of these involves a *change* in energy so two different states or molecules must be involved. Your second question regarding “procedure” is a hard one for me to figure. By “pushing arrows” you are referring to a search of Spartan’s transition state database, yes? So … perhaps search the database to find possible transition state structures?