Organophosphate
Organophosphates (also known as phosphate esters) are a class of organophosphorus compounds with the general structure O=P(OR). They can be considered as esters of phosphoric acid. Like most functional groups organophosphates occur in a diverse range of forms, with important examples including key biomolecules such as DNA, RNA and ATP, as well as many insecticides, herbicides, and nerve agents.
Phosphide
Many organophosphides are known. Common examples have the formular RPM where R is an organic substituent and M is a metal. One example is lithium diphenylphosphide. The Zintl cluster is obtained with diverse alkali metal derivatives.