The word amphipolar characterizes the cyclic bonding interaction between alternately oppositely charged atoms that, for example, distinguishes the cyclotriphosphazenes from aromatic six-membered ring compounds. An example is 1 (“1λ5,3λ5,5λ5-2λ3-tetraphosphabenzene”). It has now been synthesized by an new method incorporating a unique cascade of equivalent bond formation and cleavage reactions (PP, PC bonds).
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Karsch et al. (1995) studied this question.
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