A "simple" approach to teaching hydrogen chemical shifts

above if Q = B or Si the signal will appear between 0 and 1 ppm, usually close t o 0 (the staodard ... over two columns, add two ppm, move over one co...
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A "Simple" Approach to Teaching Hydrogen Chemical Shifts Most general chemistry and organic chemistry courses now teach elementary nmr including basic theory, 1st-order coupling patterns, and chemical shifts. While coupling patterns and ring current effects are clearly addressed and understwd, substituent effects on chemical shifts are frequently confusing to the student. Yet the student is expected to interpret simple spectra of "unknown" compounds or predidthe spectra of simple compounds, which requires a knowledge of the inductive effects of simole substituents. The followine crude a .~.o r o a c hereatlv aids students in oreanizina information on inductive suhsrltucnt eifects on chemical shift> and hss the pedagugical advantage of build~ngun p r w i < d ) ksrnrd basic n m r r ~ a l f n m the permd~ctstde. T h e rewlts are, nr hrst, nrrurate toonly 10.5 ppm, but that is usunllg suffmcnt fur introductorv rrork uhere we are happy it the rtudent knows that the C H