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Title

Heterobimetallic ruthenium–zinc complexes with bulky N-heterocyclic carbenes: syntheses, structures and reactivity

AuthorsEspinal Viguri, Maialen; Varela-Izquierdo, Víctor; Miloserdov, Fedor M.; Riddlestone, Ian M.; Mahon, Mary F.; Whittlesey, Michael K.
Issue Date2019
PublisherRoyal Society of Chemistry (UK)
CitationDalton Transactions 48(13): 4176-4189 (2019)
AbstractThe ruthenium–zinc heterobimetallic complexes, [Ru(IPr)2(CO)ZnMe][BArF4] (7), [Ru(IBiox6)2(CO)(THF)ZnMe][BArF4] (12) and [Ru(IMes)′(PPh3)(CO)ZnMe] (15), have been prepared by reaction of ZnMe2 with the ruthenium N-heterocyclic carbene complexes [Ru(IPr)2(CO)H][BArF4] (1), [Ru(IBiox6)2(CO)(THF)H][BArF4] (11) and [Ru(IMes)(PPh3)(CO)HCl] respectively. 7 shows clean reactivity towards H2, yielding [Ru(IPr)2(CO)(η2-H2)(H)2ZnMe][BArF4] (8), which undergoes loss of the coordinated dihydrogen ligand upon application of vacuum to form [Ru(IPr)2(CO)(H)2ZnMe][BArF4] (9). In contrast, addition of H2 to 12 gave only a mixture of products. The tetramethyl IBiox complex [Ru(IBioxMe4)2(CO)(THF)H][BArF4] (14) failed to give any isolable Ru–Zn containing species upon reaction with ZnMe2. The cyclometallated NHC complex [Ru(IMes)′(PPh3)(CO)ZnMe] (15) added H2 across the Ru–Zn bond both in solution and in the solid-state to afford [Ru(IMes)′(PPh3)(CO)(H)2ZnMe] (17), with retention of the cyclometallation.
Publisher version (URL)https://doi.org/10.1039/C8DT05023F
URIhttp://hdl.handle.net/10261/220627
DOI10.1039/C8DT05023F
ISSN1477-9226
E-ISSN1477-9234
Appears in Collections:(ISQCH) Artículos

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