Counter-ion effects switch ligand binding from C-2 to C-5 in kinetic carbenes formed from an imidazolium salt and IrH5(PPh3)2

Changing the counter-anion in 2-pyridylmethyl imidazolium salts (Br, BF4, PF6, SbF6) causes their kinetic reaction products with IrH5( PPh3)(2) to be switched from normal C-2 to abnormal C-5 binding.

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2002-01, p.2580-2581
Main Authors: Kovacevic, A., Gründemann, Stephan, Miecznikowski, John R., Clot, Eric, Eisenstein, Odile, Crabtree, Robert H.
Format: Article
Language:English
Subjects:
Chemical Physics
Physics
Online Access:Get full text
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Description
Summary:Changing the counter-anion in 2-pyridylmethyl imidazolium salts (Br, BF4, PF6, SbF6) causes their kinetic reaction products with IrH5( PPh3)(2) to be switched from normal C-2 to abnormal C-5 binding.
ISSN:1359-7345
1364-548X
DOI:10.1039/b207588c