Alkali metal compounds are chemical compounds that contain alkali metals such as lithium, sodium, potassium, rubidium, and cesium. These compounds often exhibit unique properties that make them useful in various catalytic processes. The alkali metals, found in Group 1 of the periodic table, have one electron in their outermost shell, leading to high reactivity and the ability to form compounds that can serve as both homogeneous and heterogeneous catalysts.