Thio derivatives of β-diketones and their metal chelates. XXI. Mass spectra of 1,1,1-Trifluoro-4-mercapto-4-(2'-naphthyl)but-3-en-2-one and its metal chelates

Abstract

The new monothio-β-diketone l,l,l-trifluoro-4-mercapto-4-(2'-naphthyl)but-3-en-2-one, βC₁₀H₇- C(SH)=CHCOCF₃, and its chelates with iron(111), ruthenium(111), cobalt(111), rhodium(111, nickel(11), palladium(11), platinum(11) and zinc(11) have been prepared. The mass spectrum of the monothio-β-diketone displays considerably more peaks than that of its parent β-diketone. Both spectra give peaks for the ion C_llH₇⁺ (RC⁺ ; R = β-C₁₀H₇). The mass spectra of the metal chelates show some differences determined by the metal. All the metal chelates except that of zinc show peaks due to the ion M'-MetS and its daughter ions (M' = M for MetL₂ and M - L for MetL₃ ; L = β-C₁₀H₇C(S)=CHCOCF₃). It is considered that the β-naphthyl group affects the fragmentation pattern, since the mass spectra differ considerably from those of metal chelates of other monothio-β-diketones.