Photochemistry of Some Group V Onium Salts. Effect of Magnetic Nuclei on In-Cage Radical Coupling Reactions

Article abstract of DOI:10.1021/jo00239a001

A series of group V arylammonium, arylphosphonium, and arylarsonium salts have been synthesized and their photochemical behaviour investigated.Direct irradiation of the onium salts in acetonitrile provided photoproducts that were dependent on the magnitude of the nuclear hyperfine coupling constant of the heteroatom rather than spin-orbit coupling.The ammonium and phosphonium salts provided only out-of-cage coupling products while the arsonium salt provided both in-cage and out-of-cage coupling products.