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A New, Mild Purine Ring Closure

✍ Scribed by Dipl.-Chem. F. E. Kempter; Dipl.-Chem. H. Rokos; Prof. Dr. W. Pfleiderer

Publisher
John Wiley and Sons
Year
1967
Tongue
English
Weight
113 KB
Volume
6
Category
Article
ISSN
0044-8249

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✦ Synopsis

the transition from the highest occupied molecular orbital of symmetry t 2 to the first unoccupied MO of symmetry 2e

[ground state (la1)2(lt2)6(le)4(2t2)6(t1)6; excited state . . . (2t2)6(t1)5(2e)l; for the MO scheme cf. 121, 1311. Since the MO t l is centered on the ligands and 2e represents mainly a MO that is localized on the central atom, the course of the chargetransfer band tl + 2e of chalcogenomolybdates can be interpreted as in Table (the ionization energy decreases from oxygen to selenium).

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