phosphine
Noun
Meaning
A colorless gas, PH3, analogous to ammonia, and having a disagreeable odor resembling that of garlic. Called also hydrogen phosphide, and formerly, phosphureted hydrogen.
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Examples
Phosphorus has an oxidation number of -3 in phosphine.
Unlike ammonia, phosphine is oxidised by air.
Diborane increases the growth rate, but arsine and phosphine decrease it.
Phosphines Phosphine (PH 3 ) and its organic derivatives (PR 3 ) are structural analogues with ammonia (NH 3 ) but the bond angles at phosphorus are closer to 90° for phosphine and its organic derivatives.
They contain aluminium phosphide and are inserted in the mole tunnels, where they turn into phosphine gas (not be confused with phosgene gas).