Triphenylphosphine (IUPAC name: triphenylphosphane) is a common organophosphorus compound with the formula P(C6H5)3 - often abbreviated to PPh3 or Ph3P. It is widely used in the synthesis of organic and organometallic compounds. PPh3 exists as relatively air stable, colorless crystals at room temperature. It dissolves in non-polar organic solvents such as benzene and diethyl ether.
Triphenylphosphine is a relatively inexpensive substance. It can be prepared in the laboratory by treatment of phosphorus trichloride with phenylmagnesium bromide or phenyllithium. The industrial synthesis involves the reaction between phosphorus trichloride, chlorobenzene, and sodium.:
Triphenylphosphine undergoes slow oxidation by air to give triphenylphosphine oxide, Ph3PO:
This impurity can be removed by recrystallisation of PPh3 from either hot ethanol or hot isopropanol. This method capitalizes on the fact that OPPh3 is more polar and hence more soluble in polar solvents than PPh3.
PPH may refer to
Tomorrow's coming 'round
A hair-pin curve in the road
She's got a run in her stocking
And she's missing the heel of her shoe
Got up this morning rolled out of bed
I spilled a diet coke
Called my mother said, "Hi"
What I meant to say was, "Why is your life a joke?"
Then, I went down to that ugly bar and
I clicked my heels three times just like you said
And I climbed that road to your empty house
The anticipation was a turn on
But you let me down
'Coz, I stood on that empty street alone
I said, "I'm ready for my close up now, Mr. Demille"
I waited for the light, but it never shone
Well I wonder what you do with that expensive piece of land
That overlooks a billion years of history
I have a sneaking suspicion, you will never understand
Hey maybe I'll see you down by the Rocky and Bullwinkle
And we can talk to that charlatan psychic
And she can paint a prettier picture of your future
'Coz that day in my life, that day in my life
I dreamt tomorrow, had a prettier face
I dreamt tomorrow, would have better things to say
Than, "You look like shit, what's your problem, bitch?
You're legs feel like sandpaper, you can't do anything right"
'Coz that day, never should have taken place
'Coz this day, in my life still cannot explain
Why I listened in the first place to you?
Oh yeah, something else
I hope one day you call up your father
And you have the guts to tell him, how he hurt you
And he made you hurt another