Bis[diphenylphosphino]methane and its bridge-substituted analogues as chemically non-innocent ligands for H2 activation†
Oleg A.
Filippov, 
*a
Elena S.
Shubina,
ac
Yves
Canac,
d
Jean-Baptiste
Sortais,
de
Noël
Lugan
d
and
Dmitry A.
Valyaev
*d
*a
Elena S.
Shubina,
ac
Yves
Canac,
d
Jean-Baptiste
Sortais,
de
Noël
Lugan
d
and
Dmitry A.
Valyaev
*d
Abstract
Deprotonation of fac-[(κ2P,P-Ph2PCH(R)PPh2)Mn(CO)3Br] (R = H, Me, Ph) produces the corresponding diphosphinomethanide derivatives fac-[(κ3P,C,P-Ph2PC(R)PPh2)Mn(CO)3], which are prone to activate H2 to form the hydride complexes fac-[(κ2P,P-Ph2PCH(R)PPh2)Mn(CO)3H]. The substitution of the dppm bridge improves dramatically the reaction efficiency and this was rationalized by DFT calculations.
![Graphical abstract: Bis[diphenylphosphino]methane and its bridge-substituted analogues as chemically non-innocent ligands for H2 activation](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=C9CC07713H&imageInfo.ImageIdentifier.Year=2020)
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