With a spin quantum number of 1/2, the phosphorus nucleus 31P, the only
natural isotope of this element, will give a single spectral line, whose
chemical shift is highly indicative of the particular phosphorus functional
group, and is generally predictable from studying the effects of structural
change. That said, it is well recognized that 31P NMR shifts can be
influenced by structural changes, and anyone reporting 31P chemical shifts
should rationalize the data with the structure at phosphorus to avoid
assignment errors.
Louis Quin of the University of North Carolina-Wilmington presents an
introductory, yet comprehensive, survey of the chemical shift effects for
the various functional groups summarizing his comprehensive knowledge of
phosphorus chemistry to provide a thorough grounding for the chemist in 31P
NMR
You can order the book online now, click the ISBN number:
0-9735913-0-7
by Karen C.
Fox and Aries Keck
Einstein has much in common with a whole clutch of pop stars from Cher to
Madonna, Sinatra to Sting: millions of people find him endlessly fascinating
and millions refer to him only by his surname. (For all you PTNC people, did
you not read past the first "1 and a bit" lines? I actually gave the answer
here already, admittedly Madonna is her Christian name rather than her
surname.) Science writers Fox and Keck
take us on cellulose-based blog from Einstein's infamous absentmindedness to
Zionism offering a unique glimpse into Einstein's world and so the making of
(at least half) of modern physics. Einstein fans and even the unconverted
will find this enlightening, engaging and entertaining.