Knowledge Bank

The oxide salt/molecule reaction technique was recently developed for the formation of oxyanions in matrices, through the transfer of $O2-$ from $Tl2O$ to a suitable acceptor. The reaction of $Tl2O$ with Ar/$SO2$ produced a number of product bands. Moreover, the concentration and temperature dependence of the product bands suggested that more than one species was formed. The first set of bands has been assigned to the $SO32-$ anion with an effective symmetry of less than $C3y$ due to ion pairing. The second series of product bands has been assigned to the symmetrical $O2SOSO22-$ structure for the disulfite ion. This technique is currently being applied to the reaction of $Tl2O$ with $BF3$ in inert matrices. To date, no assignments have been made for the product species.