Methyldiphenylphosphine is the
organophosphine Organophosphines are organophosphorus compounds with the formula PR''n''H3−''n'', where R is an organic substituent. These compounds can be classified according to the value of ''n'': primary phosphines (''n'' = 1), secondary phosphine ...
with the formula CH
3(C
6H
5)
2P, often abbreviated PMePh
2. It is a colorless, viscous liquid. It is a member of series (CH
3)
3-n(C
6H
5)
2P that also includes
n = 0,
n = 1, and
n = 3 that are often employed as
ligand
In coordination chemistry, a ligand is an ion or molecule ( functional group) that binds to a central metal atom to form a coordination complex. The bonding with the metal generally involves formal donation of one or more of the ligand's elec ...
s in
metal phosphine complexes.
Methyldiphenylphosphine is prepared by reaction of
chlorodiphenylphosphine
Chlorodiphenylphosphine is an organophosphorus compound with the formula (C6H5)2PCl, abbreviated Ph2PCl. It is a colourless oily liquid with a pungent odor that is often described as being garlic-like and detectable even in the ppb range. It is u ...
with
methyl Grignard reagent:
:Cl(C
6H
5)
2P + CH
3MgBr → CH
3(C
6H
5)
2P + MgBrCl
Selected derivatives:
*The
phosphine oxide OPMePh
2, prepared by treatment with hydrogen peroxide.
*The coordination complex MoH
4(PMePh
2)
4, prepared by treatment of MoCl
4(PMePh
2)
2 with
sodium borohydride
Sodium borohydride, also known as sodium tetrahydridoborate and sodium tetrahydroborate, is an inorganic compound with the formula Na BH4. This white solid, usually encountered as an aqueous basic solution, is a reducing agent that finds applica ...
in the presence of excess ligand.
*The coordination complex CoCl
2(PMePh
2)
2, prepared by treating
cobalt(II) chloride
Cobalt(II) chloride is an inorganic compound of cobalt and chlorine, with the formula . The compound forms several hydrates ·''n'', for ''n'' = 1, 2, 6, and 9. Claims of the formation of tri- and tetrahydrates have not been confirmed.M. T. Saug ...
with the phosphine.
*The
phosphine-borane H
3BPMePh
2 prepared by treating the phosphine with borane.
[{{cite book , doi=10.1002/9780470132463.ch29, chapter=Methyldiphenylphosphine-Borane and Dimethylphenylphosphine-Borane, series =Inorganic Syntheses, year=1974, last1=Mathur, first1=M. A., last2=Myers, first2=W. H., last3=Sisler, first3=H. H., last4=Ryschkewitsch, first4=G. E., title=Inorganic Syntheses, pages=128–133, volume=15, isbn=9780470132463]
References
Tertiary phosphines
Phenyl compounds