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Contemporary Problems in Carbonium Ion Chemistry I/II (Paperback, Softcover reprint of the original 1st ed. 1984)
Loot Price: R2,993
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Contemporary Problems in Carbonium Ion Chemistry I/II (Paperback, Softcover reprint of the original 1st ed. 1984)
Series: Topics in Current Chemistry, 116/117
Expected to ship within 10 - 15 working days
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In 1965 a book by P. Bartlett appeared under the title "The
Nonclassical Ions" 1). The book is a collection of papers reprinted
from various journals. The many reviews that have appeared since
2-22) are either antiquated (the book published in 1972 12) covers
the literature mainly before 1968) or relatively biased (e.g.,
3.4,10" on brief 2, 7,11). This review attempts to discuss the
various points of view on the "nonclassical" carbocations. The main
point is to establish the relative role of "nonclassical" and
"classical" ions in various chemical processes. The author has
followed P. Bartlett's advice 1) that when setting forth the
achievements of the human mind one should see how we came to the
modern understanding of a given problem (" ... how we know what we
know"). The theory of "nonclassical" ions offers an explanation of
many unique chemical, stereochemical and kinetic peculiarities of
bicyclic compounds. It has expanded our knowledge on chemical bonds
in carbocations by introducing electron-deficient bonds (as in
boron hydrides). It has accounted for many rearrangements of stable
cations. As a "side" result our knowledge has been extended about
ionization processes in a solution, as well as about stereochemical
methods. 2 Main Terms of Nonclassical Carbocations In 1939 Hevell,
Salas and Wilson 23) assumed an intermediate, "bridge" ion 2 to be
formed when camphene hydrochloride 1 is rearranged into isobornyl
chloride 3. This happened 17 years after Meerwein first postulated
the intermediate formation of "carbonium" ions in chemical
reactions.
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