Titanium(III) phosphide

Titanium(III) phosphide (TiP) is an inorganic chemical compound of titanium and phosphorus. Normally encountered as a grey powder,^[1] it is a metallic conductor with a high melting point.^[2] It is not attacked by common acids or water.^[1] 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.^[2] Titanium phosphide is classified as a "metal-rich phosphide", where extra valence electrons from the metal are delocalised.^[2]

Titanium(III) phosphide

Names
Other names titanium monophosphide
Identifiers
CAS Number	12037-65-9 Y
3D model (JSmol)	Interactive image
ChemSpider	74768
ECHA InfoCard	100.031.680
EC Number	234-862-6
PubChem CID	82856
CompTox Dashboard (EPA)	DTXSID801014254
InChI InChI=1S/P.Ti Key: ADDWXBZCQABCGO-UHFFFAOYSA-N
SMILES P#[Ti]
Properties
Chemical formula	TiP
Molar mass	78.841 g/mol
Appearance	gray crystals
Density	4.08 g/cm3, solid [1]
Melting point	>1400°C [1]
Structure
Crystal structure	hexagonal
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is YN ?) Infobox references

Titanium phosphide can be prepared by the reaction of TiCl₄ and PH₃.^[1]

There are other titanium phosphide phases, including Ti₃P,^[3] Ti₂P,^[4] Ti₇P₄,^[5] Ti₅P₃,^[6] and Ti₄P₃.^[7]

Titanium phosphide should not be confused with titanium phosphate or titanium isopropoxide, both of which are sometimes known by the acronym TIP.