Muonium Addition to the Radicalic Carbon in 1,3-Diphosphacyclobutane-2,4-diyl

When a crystalline 1,3-diphosphacyclobutane-2,4-diyl bearing the 3,5-dichloro-2,4,6-triazine substituent was irradiated with muon beam, two paramagnetic species showing muon hyperfine coupling cons...