Isolation of Bis‐ and Mono‐Cyclometallated Ru−IMes Complexes upon Reaction of [Ru(PPh 3 ) 3 HCl], IMes and ZnMe 2 - Archive ouverte HAL
Article Dans Une Revue European Journal of Inorganic Chemistry Année : 2023

Isolation of Bis‐ and Mono‐Cyclometallated Ru−IMes Complexes upon Reaction of [Ru(PPh 3 ) 3 HCl], IMes and ZnMe 2

Résumé

Abstract Addition of an excess of ZnMe 2 to a mixture of [Ru(PPh 3 ) 3 HCl] and IMes (IMes=1,3‐bis(2,4,6‐trimethylphenyl)imidazolin‐2‐ylidene) yields the bis‐cyclometallated complex, [Ru(IMes)“(PPh 3 ) 2 ] 2 , together with the mono‐cyclometallated, Ru−Zn heterobimetallic complex [Ru(IMes)′(PPh 3 ) 2 (ZnMe)] 3 . Treatment of 2 with H 2 , PhSiH 3 or pinacolborane yields the previously reported complex, [Ru(IMes)′(PPh 3 ) 2 H] 1 , the synthesis of which has been reinvestigated. Further studies of small molecule reactivity show that 1 adds H 2 to give [Ru(IMes)(PPh 3 ) 2 H 4 ] 4 , whilst 2 reacts with catecholborane to give [Ru(IMes‐Bcat)′(PPh 3 ) 2 H] 5 , in which (IMes‐Bcat)′ signifies a borylated NHC ligand that is singly‐metallated onto Ru. Treatment of 2 with CO gives the 18‐electron dicarbonyl product [Ru(IMes)”(PPh 3 )(CO) 2 ] 6 . Compounds 1 – 3 , 5 and 6 have been structurally characterised.

Domaines

Chimie

Dates et versions

hal-04220053 , version 1 (27-09-2023)

Identifiants

Citer

Anne‐frédérique Pécharman, Erika Roberts, Fedor Miloserdov, Victor Varela-Izquierdo, Mary Mahon, et al.. Isolation of Bis‐ and Mono‐Cyclometallated Ru−IMes Complexes upon Reaction of [Ru(PPh 3 ) 3 HCl], IMes and ZnMe 2. European Journal of Inorganic Chemistry, 2023, 26 (12), ⟨10.1002/ejic.202300037⟩. ⟨hal-04220053⟩
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