Multiply bridged organodiantimony(V) compounds; crystal structures of [(SbR2)2(µ-O)2(µ -O2AsMe2)2] (R = Ph or p-tolyl) and [(SbR3)2(µ-O)(µ-O2 MR′2)2] (R = Ph, M = P, R′ = Me; R = Ph, M = As, R′ = Me or Ph; R = p-tolyl, M = P, R′ = Me)
Abstract
A number of quadruply and triply bridged
organodiantimony(V) compounds have been synthesized by
reactions of [(SbR
2
BrO)
2
] (R = Ph or
p-tolyl) and [(SbR
3
X)
2
O]
(R = Ph or p-tolyl, X = Br or Cl)
with Na(O
2
AsMe
2
),
Na(O
2
AsPh
2
) or Na(O
2
AsMe
2
).
The compounds have been characterised by a range of spectroscopic
methods and crystal structures are reported for two quadruply bridged,
[(SbPh
2
)
2
(µ-O)
2
(µ
-O
2
AsMe
2
)
2
] and
[{Sb(p-MeC
6
H
4
)
2
}
2
(µ-O)
2
(µ-O
2
AsMe
2
)
2
], and four triply bridged compounds,
[(SbPh
3
)
2
(µ-O)(µ-O
2
PMe
2
)
2
],
[(SbPh
3
)
2
(µ-O)(µ-O
2
AsMe
2
)
2
],
[(SbPh
3
)
2
(µ-O)(µ-O
2
AsPh
2
)
2
] and
[{Sb(p-MeC
6
H
4
)
3
}
2
(µ-O)(µ-O
2
PMe
2
)
2
]. Related trimethylantimony(V) compounds,
i.e.
[{SbMe
3
(O
2
PMe
2
)}
2
O] and
[{SbMe
3
(O
2
AsPh
2
)}
2
O], which are highly moisture sensitive, have also been
obtained.
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