Problem3

Problem3 - were discussed in class: Magnetic Anisotropy of...

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Problem Set 3 Chemistry 154A/254A: Quantum Chemistry Professor Song-I Han Teaching Assistant: Wang, Xiqing (Francis) Office: Chemistry 3223 Office: Chem 1126/ Dahlquist Lab (1 th floor) Office hours: Tue, Th 4-5 pm Office hours: Wed 1-2 pm and Fr 4-5pm Email: songi@chem.ucsb.edu Email: xwang@chem.ucsb.edu temporarily Mark Lingwood ( mlingwood@chem.ucsb.edu ) Give a justification for the observed 1 H chemical shift (or a reason why the proton is not seen) for all numbered protons for Tryptophan and Arginine, as shown in the diagram below. Use the effects that
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Unformatted text preview: were discussed in class: Magnetic Anisotropy of Neighboring Groups, Ring Current, Electric Field, and Intermolecular Interactions Hydrogen Bonding. You should use each effect at least once (except the Isotope Effect). The 1 H NMR spectra can be found on the SDBS website. You will have to search for L-Tryptophan and L-arginine to find the spectra, or else use the wildcard %tryptophan and %arginine....
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This note was uploaded on 08/06/2008 for the course CHEM 154A taught by Professor Han during the Winter '08 term at UCSB.

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