ChemInform Abstract: PHOTOCYCLOADDITION OF β‐METHYLSTYRENES TO SOME 9‐CYANOPHENANTHRENES. CHEMICAL CONSEQUENCES OF EXCIPLEX FORMATION

Abstract

Die Photoaddition eines Phenanthrens wie z.B. (Ia) an Styrole wie z.B. trans‐(Ila), die hauptsächlich zum" Kopf‐Kopf‐Addukt (IIIa) führt, wird durch einen Zusatz von Isopren nur zu einem Teil gelöscht.

Iron(III)-porphyrin .pi.-cation radical complexes. Molecular structures and magnetic properties

“…Pertinent bond lengths in the coordination unit of 3 are as follows: Fe-Nj, 2.04 (1); Fe-N2, 2.05 (2); Fe-0 2.13 (1) Á. The equatorial bond lengths values are consistent with one-electron occupancy of the dx^yi orbital, and therefore they confirm the Fe-O, Fe(III) state, while the axial bond elongation explains the large value of the quadrupole splitting.…”