名称:
Rare gas matrix ESR investigations of 12CH3 63,65CuF, 13CH3 63,65CuF, H63,65CuF, and D63,65CuF generated by reactive laser vaporization
摘要:
A new experimental procedure for conducting reactive laser vaporizations is described and applied to the generation of the previously unreported copper radicals, 13CH3CuF, 12CH3CuF, HCuF, and DCuF, for rare gas matrix ESR investigations. Laser vaporization was conducted on a thin film of reactant condensed on the copper metal surface. The g and A tensors for these are compared with other small copper radicals in order to determine electronic structure and bonding trends. The neon magnetic parameters (MHz) for 13CH363CuF are: g∥ =1.965(1), g⊥ =2.3626(3); A∥(63Cu) =3076(2), A⊥(63Cu) =2993(1); A∥(19F) =94(1), A⊥(19F) =68(1); A∥(13C) =19(1), A⊥(13C) <3. The H quartet hfs for CH3CuF was resolved on the perpendicular transitions, having an A value of 9.3(3) MHz. For H63CuF, the neon results (MHz) are: g∥ =1.975(1); g⊥ =2.4075(4); A∥(63Cu) =2826(3), A⊥(63Cu) =2717(1); A∥(19F) =127(2), A⊥(19F) =94(1); A∥(H) =61(3), and A⊥(H) =29(1) MHz.