C19H17P

C19H17P is a molecular formula used to describe a family of organophosphorus compounds that contain 19 carbon atoms, 17 hydrogen atoms, and a single phosphorus atom. The formula provides the elemental composition but does not specify how the atoms are connected, so many different structures can share this formula. The resulting compounds can vary widely in physical properties and reactivity, depending on the arrangement of the carbon framework and any substituents attached to the phosphorus.

Because C19H17P represents a formula rather than a fixed structure, it encompasses multiple constitutional isomers and stereoisomers. Examples include aryl-substituted phosphines and related phosphorus-containing frameworks with varying degrees of substitution and ring systems. Each isomer can differ in melting and boiling points, solubility, and stability, and specific properties must be determined from the actual structure.

Synthesis of compounds with this formula generally involves forming phosphorus–carbon bonds through methods such as coupling reactions between aryl groups and phosphorus precursors, or substitution reactions on chlorophosphines with aryl nucleophiles. A range of catalytic and transition-metal-mediated routes can be employed to assemble the desired aryl- or alkyl- substituents around the phosphorus center.

Applications for specific C19H17P isomers typically arise in organophosphorus chemistry. Many such compounds serve as ligands in homogeneous catalysis, contributing stereochemical and steric properties that influence catalytic activity. They can also act as intermediates in organic synthesis or as functional ligands in material science, depending on their exact structure.

Safety and handling depend on the particular isomer. Organophosphorus compounds are often air- and moisture-sensitive to some degree, and some members can be toxic. Proper precautions include use of inert atmosphere techniques, appropriate PPE, and storage away from oxidizers.