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Phosphine (IUPAC name: phosphane) is a colorless, flammable, highly toxic compound with the chemical formula P H 3, classed as a pnictogen hydride.Pure phosphine is odorless, but technical grade samples have a highly unpleasant odor like rotting fish, due to the presence of substituted phosphine and diphosphane (P 2 H 4).
Phosphines or phosphanes are phosphorus compounds derived from phosphine and have the general structure R 3 P. For the nitrogen analogues, please see Category:Inorganic amines . Wikimedia Commons has media related to Phosphines .
Phosphine (PH 3) and its organic derivatives (PR 3) are structural analogues of ammonia (NH 3), but the bond angles at phosphorus are closer to 90° for phosphine and its organic derivatives. Phosphine is an ill-smelling, toxic gas. Phosphorus has an oxidation number of −3 in phosphine. Phosphine is produced by hydrolysis of calcium phosphide ...
Organophosphines, like phosphine itself, are pyramidal molecules with approximate C 3v symmetry. The C–P–C bond angles are approximately 98.6°. [ 3 ] The C–P–C bond angles are consistent with the notion that phosphorus predominantly uses the 3p orbitals for forming bonds and that there is little sp hybridization of the phosphorus atom.
The toxicity of aluminium phosphide is attributed to the liberation of phosphine gas, a cytotoxic compound that causes free radical mediated injury, inhibits vital cellular enzymes and is directly corrosive to tissues. The following reactions release phosphine when AlP reacts with fluids in the body: AlP + 3 H 2 O → Al(OH) 3 + PH 3, and
Phosphine oxide is the inorganic compound with the formula H 3 PO. Although stable as a dilute gas, liquid or solid samples are unstable. Unlike many other compounds of the type PO x H y, H 3 PO is rarely discussed and is not even mentioned in major sources on main group chemistry.
An artist's representation of how some people may see phosphenes by retinal stimulation. A phosphene is the phenomenon of seeing light without light entering the eye.The word phosphene comes from the Greek words phos (light) and phainein (to show).
Treatment of a bulky phosphine chloride (RPCl 2) with magnesium anthracene affords a dibenzo-7-phosphanorbornadiene compound (RPA). [11] Under thermal conditions, the RPA compound (R = NiPr 2 ) decomposes to yield anthracene; kinetic experiments found this decomposition to be first-order. [ 11 ]