Addition of a complexant like crown ether or [[2.2.2-Cryptand|[2.2.2-cryptand]] to a solution of [Na(NH)]e affords [Na (crown ether)]e or [Na(2,2,2-crypt)]e. Evaporation of these solutions yields a blue-black paramagnetic solid with the formula [Na(2,2,2-crypt)]e.
Most solid electride salts decompose above 240 K, although [CaAlO](e) is stable at room temperature. In these salts, the electron is delocalized between the cations. Electrides are paramagnetic, and are Mott insulators. Properties of these salts have been analyzed.
ThI and ThI have also been reported to be electride compounds.  Similarly, Cerium#Chemistry|, , , and  are all electride salts with a tricationic metal ion.