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Heterobimetallic ruthenium-zinc complexes with bulky N-heterocyclic carbenes: syntheses, structures and reactivityElectronic supplementary information (ESI) available: CCDC 1882150-1882159. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c8dt05023f
The ruthenium-zinc heterobimetallic complexes, [Ru(IPr) 2 (CO)ZnMe][BAr F 4 ] ( 7 ), [Ru(IBiox6) 2 (CO)(THF)ZnMe][BAr F 4 ] ( 12 ) and [Ru(IMes)′(PPh 3 )(CO)ZnMe] ( 15 ), have been prepared by reaction of ZnMe 2 with the ruthenium N-heterocyclic carbene complexes [Ru(IPr) 2 (CO)H][BAr F 4 ] ( 1 ), [...
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| Main Authors: | , , , , , |
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| Format: | Article |
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| Summary: | The ruthenium-zinc heterobimetallic complexes, [Ru(IPr)
2
(CO)ZnMe][BAr
F
4
] (
7
), [Ru(IBiox6)
2
(CO)(THF)ZnMe][BAr
F
4
] (
12
) and [Ru(IMes)′(PPh
3
)(CO)ZnMe] (
15
), have been prepared by reaction of ZnMe
2
with the ruthenium N-heterocyclic carbene complexes [Ru(IPr)
2
(CO)H][BAr
F
4
] (
1
), [Ru(IBiox6)
2
(CO)(THF)H][BAr
F
4
] (
11
) and [Ru(IMes)(PPh
3
)(CO)HCl] respectively.
7
shows clean reactivity towards H
2
, yielding [Ru(IPr)
2
(CO)(η
2
-H
2
)(H)
2
ZnMe][BAr
F
4
] (
8
), which undergoes loss of the coordinated dihydrogen ligand upon application of vacuum to form [Ru(IPr)
2
(CO)(H)
2
ZnMe][BAr
F
4
] (
9
). In contrast, addition of H
2
to
12
gave only a mixture of products. The tetramethyl IBiox complex [Ru(IBioxMe
4
)
2
(CO)(THF)H][BAr
F
4
] (
14
) failed to give any isolable Ru-Zn containing species upon reaction with ZnMe
2
. The cyclometallated NHC complex [Ru(IMes)′(PPh
3
)(CO)ZnMe] (
15
) added H
2
across the Ru-Zn bond both in solution and in the solid-state to afford [Ru(IMes)′(PPh
3
)(CO)(H)
2
ZnMe] (
17
), with retention of the cyclometallation.
Addition of ZnMe
2
to cationic and neutral ruthenium hydride complexes bearing NHC ligands affords new Ru-Zn heterobimetallic complexes. |
|---|---|
| ISSN: | 1477-9226 1477-9234 |
| DOI: | 10.1039/c8dt05023f |