page_title: Trimethylphosphine
section_title: Coordination chemistry
hierarchical_section_title: Trimethylphosphine / Reactions / Coordination chemistry
caption_attribution_description: English: Structure of HW(PMe3)4(Me2PCH2), "W(PMe3)5"
context_page_description: Trimethylphosphine is the organophosphorus compound with the formula P(CH₃)₃, commonly abbreviated as PMe₃. This colorless liquid has a strongly unpleasant odor, characteristic of alkylphosphines. The compound is a common ligand in coordination chemistry.
context_section_description: Trimethylphosphine is a highly basic ligand that forms complexes with most metals.  As a ligand, trimethylphosphine's Tolman cone angle is 118°. This angle is an indication of the amount of steric protection that this ligand provides to the metal that to which it is bound.
  Being a relatively compact phosphine, several can bind to a single transition metal, as illustrated by the existence of Pt(PEt₃)₄. Its complex with silver iodide, AgI(PMe₃) is an air-stable solid that releases PMe₃ upon heating.
caption: Structure of HW(PMe3)4(Me2PCH2), "W(PMe3)5".[8]
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