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Magnetic interactions in a vanadyl complex of an iminonitroxide radical

✍ Scribed by Paul F. Richardson; Robert W. Kreilick


Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
258 KB
Volume
50
Category
Article
ISSN
0009-2614

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✦ Synopsis


We have synthesizd a complex in which a pyridyhminonitroxldc radical is Loordmated to r\ vanadyl IOIL ESR studies of thts complex show that the radical's unpaired spin is tightly coupled to the vanadium spin to form a ground singlet state with a thermaily acce,stble trlplct s'tiltc. Tbc vanadium hyperfinc splittmg in the triplet state of the complex is found to be one half of that of isolated vanadyl complexes.


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0 r( \ L. [14] ( + ) -7 has the absolute configuration p(R) [ll]. As only part of 2 is racemized during the conversion from 7, it must be concluded that ( --)-Z and ( + ) -2 have the configurations p(R) and p(S), respectively. 1151 From p(R)-( +)-7, p(R)-( -)-2 is formed in the monomer synthesis. a