Red and green chemiluminescence of Na, Mg, and lanthanide triphenylmethyl derivatives during oxidation by dioxygen and cerium(IV)

Article abstract of DOI:10.1007/BF02496006

Chemiluminescence (CL) of triphenylmethyl organometallics (TPM), Ph₃CNa, Ph₃CMgCl, and Ph₃CLnCl₂ (Ln = Cd, Eu, and Dy), in THF and toluene during oxidation by O₂ and the (NH₄)₂Ce(NO₃)₆ complex was found. The first CL is caused by the luminescence of two emitters: (Ph₃C^.)*, emitting in the green spectral region (λ_max = 524, 550 nm), and an unstable product of substitution of the hydrogen atom in the phenyl ring of the Ph₃C^. radical, emitting in the red region (λ_max = 580±20 nm). The emitter of the second CL, Ph₃C^. *, is generated in the elementary electron transfer from the Ph₃C^- anion to Ce^IV, reducing the latter to Ce^III.