Knowledge Bank

The molicular cations $Cu2+,Ag2+$, and $Au2+$ were generated in neon matrices at 4 K by simultaneous laser vaporization of the appropriate metal and open-tube neon discharge (16.8 eV) $photoionization.1$ The ESR apectra are all of $S=1/2$ species exhibiting hyperfine splittings due to the $\mathrm{<mrow\; data-mjx-texclass="ORD">63</mrow>}Cu(I=3/2)\mathrm{<mrow\; data-mjx-texclass="ORD">107,109</mrow>}Ag(1-1/2)$, and 197 $Au(I=3/2)$ nuclei. Variations in the hyperfine and g tensor components in the series are interesting and will be discussed. Comparison will be made with other, less gas-like, $environments2$.