期刊
DALTON TRANSACTIONS
卷 -, 期 35, 页码 7203-7214出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b905729c
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资金
- Royal Society
- Ministry of Science and Technology (MOST)
- Government of Pakistan
- Lady Margaret Hall
- University of Oxford
Stable annulated diaminocarbene ligands 7,9-bis(2,4,6-trimethylphenyl)-6b,9a-dihydroace naphtha[1,2-d]imidazolin-2-ylidene and 7,9-bis(2,6-diisopropylphenyl)-6b,9a-dihydroacenaphtho-[1,2-d]imidazolin-2-ylidene; designated as (BIAN-SIMes, 5a,) and (BIAN-SIPr, 5b), respectively, have been prepared. The base dependent decomposition of imidazolinium salts via ring opening at the backbone was also observed. The corresponding rhodium(I) and iridum(I) complexes (eta(4)-1,5-COD)M(BIAN-SIMes) Cl and (eta(4)-1,5-COD)M(BIAN-SIPr)Cl; M = Rh (6a, 6b) and Ir (7a, 7b) have been synthesised by the reaction of free carbene with [M(eta(4)-1,5-COD)(mu-Cl)](2); where M = Rh, Ir. The cationic Ir(I) complexes [(eta(4)-1,5-COD)Ir(BIAN-SIMes)Py]BF(4) 8a and [(eta(4)-1,5-COD)Ir(BIAN-SIPr)Py]PF(6) 8b have also been synthesised. Compounds 4b, 5a, 6a, 6b, 7b and 8b have been structurally characterised. The catalytic activities for the rhodium(I) complexes 6a and 6b were evaluated for the hydroformylation of 1-octene.
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