Methods for attaching metal-capped sp carbon chains to metal clusters: synthesis, structure and reactivity of rhenium–triosmium carbon complexes [(η5-C5Me5)Re(NO)(PPh3)(C C)nOs3(CO)10H]
Abstract
Reactions of
[(η
5
-C
5
Me
5
)Re(NO)(PPh
3
)
{(C![[triple bond, length as m-dash]](https://www.rsc.org/images/entities/char_e002.gif)
C)
n
H}] and
[Os
3
(CO)
10
(NCMe)
2
] give the title
Re(CC)
n
Os
3
complexes (n =
1–3, 83–61%); a crystal structure (n = 1), and IR and
NMR properties, indicate contributions by neutral
Re–(CC)
n
–(Os
3
) and
zwitterionic
+
Re![[double bond, length as m-dash]](https://www.rsc.org/images/entities/char_e001.gif)
(CC)
n
(Os
3
)
-
resonance forms.
C)
n
H}] and
[Os
3
(CO)
10
(NCMe)
2
] give the title
Re(CC)
n
Os
3
complexes (n =
1–3, 83–61%); a crystal structure (n = 1), and IR and
NMR properties, indicate contributions by neutral
Re–(CC)
n
–(Os
3
) and
zwitterionic
+
Re(CC)
n
(Os
3
)
-
resonance forms.
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