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Phosphinimine-borane combinations in frustrated Lewis pair chemistryCCDC reference numbers 873942-873947. For crystallographic data in CIF or other electronic format see DOI: 10.1039/c2dt30720k
The phosphinimines Ph 3 PNR (R = Ph 1 , C 6 F 5 2 , t Bu 3 ) are combined with B(C 6 F 5 ) 3 in an effort to explore the frustrated Lewis pair (FLP) chemistry. While compound 1 is shown to form an adduct with the borane, compounds 2 and 3 exhibit no apparent interaction. Nonetheless exposure of each...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Online Access: | Get full text |
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| Summary: | The phosphinimines Ph
3
PNR (R = Ph
1
, C
6
F
5
2
,
t
Bu
3
) are combined with B(C
6
F
5
)
3
in an effort to explore the frustrated Lewis pair (FLP) chemistry. While compound
1
is shown to form an adduct with the borane, compounds
2
and
3
exhibit no apparent interaction. Nonetheless exposure of each of the three combinations to H
2
resulted in the formation of the corresponding salts [Ph
3
PN(H)R][HB(C
6
F
5
)
3
] (R = Ph
5
, C
6
F
5
6
,
t
Bu
7
). Reaction of
1
or
2
with B(C
6
F
5
)
3
and carbon dioxide afforded Ph
3
PN(R)COOB(C
6
F
5
)
3
(R = Ph
8
, C
6
F
5
9
) while the corresponding reaction with
3
gave rise only to the
t
BuNCO and (Ph
3
PO)B(C
6
F
5
)
3
. Reactions of
1-3
and B(C
6
F
5
)
3
with PhC&z.tbd;CH proceeds to give either deprotonation or addition affording products of the form [Ph
3
PN(H)R][PhC&z.tbd;CB(C
6
F
5
)
3
] or (Ph
3
PNR)(Ph)C&z.dbd;CH(B(C
6
F
5
)
3
). The factors governing the nature of the dominant products are considered.
The phosphinimines Ph
3
PNR (R = Ph
1
, C
6
F
5
2
,
t
Bu
3
) are combined with B(C
6
F
5
)
3
in an effort to explore the frustrated Lewis pair (FLP) chemistry. |
|---|---|
| ISSN: | 1477-9226 1477-9234 |
| DOI: | 10.1039/c2dt30720k |