Titanium(III) phosphide (TiP) is an inorganic chemical compound of

titanium Titanium is a chemical element with the symbol Ti and atomic number 22. Found in nature only as an oxide, it can be reduced to produce a lustrous transition metal with a silver color, low density, and high strength, resistant to corrosion in ...

and

phosphorus Phosphorus is a chemical element with the symbol P and atomic number 15. Elemental phosphorus exists in two major forms, white phosphorus and red phosphorus, but because it is highly reactive, phosphorus is never found as a free element on Ear ...

. Normally encountered as a grey powder, it is a metallic conductor with a high melting point.H.G. Von Schnering, W. Hönle ''Phosphides - Solid state chemistry'' Encyclopedia of Inorganic Chemistry Ed. R. Bruce King (1994) John Wiley & Sons It is not attacked by common acids or water. Its physical properties stand in contrast to the group 1 and group 2 phosphides that contain the P³⁻ anion (such as Na₃P), which are not metallic and are readily hydrolysed. Titanium phosphide is classified as a "metal-rich phosphide", where extra valence electrons from the metal are delocalised. Titanium phosphide can be prepared by the reaction of TiCl₄ and PH₃. There are other titanium phosphide phases, including Ti₃P, Ti₂P, Ti₇P₄, Ti₅P₃, and Ti₄P₃.Phase Relationships in the Ti-P System with some Notes on the Crystal Structures of TiP₂ and ZrP₂, Snell P.O, Acta Chem. Scand. 1968 22 1942-1952 Titanium phosphide should not be confused with titanium phosphate or titanium isopropoxide, both of which are sometimes known by the acronym TIP.

References

Phosphides Titanium(III) compounds {{inorganic-compound-stub