2-DNMR - 7/27/2011 2D NMR the really super cool way to...

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7/27/2011 1 2 D NMR–the really super cool way to solve complex spectra Today COSY NOSEY HETCOR Why do chemists run 2D NMR? Introduction NMR software makes setting up these experiments very easy with minimal amount of intervention from operator. Automated processing allows for minimal time spent on making 2 D spectra ready for interpretation. Most synthetic chemists in industry now run a series of 2D’s on their compounds and decide later what they need. All 2D experiments are a simple series of 1D experiments collected with different timing (pulsing).
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7/27/2011 2 Introduction In general, 2D’s can be divided into two types, homonuclear ( 1 H 1 H or 13 C 13 C) and heteronuclear ( 1 H 13 C) Each type can provide either through bond (e.g. COSY) or through space (e.g. NOESY) coupling information COSY protons that are more than three chemical bonds apart give no cross signal because the 4 J coupling constants are close to 0. NOESY provides information about through space
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This note was uploaded on 01/18/2012 for the course CHEM S343 taught by Professor Benburlingham during the Summer '11 term at Indiana.

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2-DNMR - 7/27/2011 2D NMR the really super cool way to...

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