Charge-Transfer Spectra of Matrix-Isolated 3d Transition-Metal Dichlorides

Abstract

The charge‐transfer spectra of MnCl₂, FeCl₂, CoCl₂, and NiCl₂ molecules isolated in argon matrices near 4.2°K have been measured. The results are consistent with the d‐configuration ground states ${}^6\Sigma$ , ${}^5\Delta$ , ${}^4\phi$ , and ${}^3\pi$ deduced in earlier work from gas‐phase Laporte‐forbidden absorption spectra of these molecules.