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Cationic iridium phosphines partnered with [closo-CB11H6Br6](_): (PPh3)(2)Ir(H)(2)(closo-CB11H6Br6) and [(PPh3)(2)Ir(eta(2)-C2H4)(3)][closo-CB11H6Br6]. Relevance to counterion effects in olefin hydrogenation

Abstract:

Treatment of [(PPh3)2Ir(COD)][closo-CB11H6 Br6] with H2 in CH2Cl2 solution affords crystallographically characterized (PPh3)2Ir(H)2(closo-CB11 H6Br6), in which the weakly coordinating carborane anion is bound to the metal center. In solution the anion rapidly dissociates/recombines with the metal center, and this process can be frozen out at -50°C. At lower temperatures (-80°C) a solvent-stabilized complex [(PPh3)2Ir(H)2 (CH2Cl2)][closo-CB11H6Br6 ] is suggested to also be present. (PPh3)2Ir(H...

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Publication status:
Published

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Publisher copy:
10.1021/om034177o

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Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Inorganic Chemistry
Role:
Author
Journal:
ORGANOMETALLICS
Volume:
23
Issue:
3
Pages:
428-432
Publication date:
2004-02-02
DOI:
EISSN:
1520-6041
ISSN:
0276-7333
URN:
uuid:1304df12-b6d0-435a-baad-419f9ed10795
Source identifiers:
51706
Local pid:
pubs:51706

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