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Introduction to 2D NMR

Introduction to 2D NMR. Multipulse techniques. Organic Structure Analysis, Crews, Rodriguez and Jaspars. Organic Structure Analysis, Crews, Rodriguez and Jaspars. ONE-PULSE SEQUENCE. Organic Structure Analysis, Crews, Rodriguez and Jaspars. ONE-PULSE SEQUENCE. (90 o ) x. 1 H. Preparation.

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1.85k views • 42 slides

4 aromatic protons

Can we use 2D to assign this spectrum?. 4 aromatic protons. Structure first determined by Woodward in 1948 (without NMR!). HSQC. CH 2. Identify CH, CH 2 and CH 3 peaks on HSQC (use DEPT if necessary). COSY. H-22 is a good place to start. 22. 23. HSQC.

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413 views • 17 slides

+1/2

-1/2. E. +1/2. low energy spin state oriented with (parallel to) magnetic field. Two Dimensional NMR. 90 o x. 1D “pulse and acquire”. FT (t1). t1. relaxation delay. 90 o x 90 o x. t2. t1 delay. FT (t1,t2).

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290 views • 13 slides

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