Modern structural chemistry by Linus Pauling (source code)

= Modern structural chemistry by Linus Pauling
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{tag=Work by Linus Pauling}

https://www.nobelprize.org/uploads/2018/06/pauling-lecture.pdf

Nobel Lecture, December 11, 1954; printed p.433 discusses the measured amide C–N length, partial double-bond character and planarity, and explains resonance structures as hypothetical components rather than separately synthesizable forms. Primary indexed PDF passage verified; direct PDF retrieval returned403. No quantitative rotational barrier inferred.