ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Hydrido- and Methyl-Iridium(III) Complexes with Labile Anionic Ligands; a Route to Cationic Iridium(III) ComplexesHydrido- and methyl-iridium(III) complexes (PPh3)2(CO)ClRIrX (1-4) (R = H, CH3) are formed by oxidative addition of acids HX with poorly coordinating anions X- (X- = O3SCF3-, O3SC4F9-, BF4-) and (CH3)3O+BF4-, respectively, to (PPh3)2(CO)ClIr. The excellent leaving groups X- can be substituted even by weak neutral σ- and π-donors yielding cationic iridium(III) complexes [(PPh3)2(CO)ClRIrB]+X- (5-9) (B = PPh3, CH3CN, H2O, (CH3)2CO, THF, C2H4). The structure of the key tetrafluoroborato complex (PPh3P)2(CO)Cl(H)IrFBF3 (3c) has been determined by X-ray structure analysis.
Notes:
Hydrido- und Methyl-Iridium(III)-Komplexe (PPh3)2(CO)ClRIrX (1-4) (R = H, CH3) entstehen durch oxidative Addition der Säuren HX mit schwach koordinierenden Anionen X- (X- = O3SCF3-, O3SC4F9-, BF4-) bzw. von (CH3)3O+BF4- an (PPh3)2(CO)ClIr. Die ausgezeichneten Abgangsgruppen X- lassen sich auch durch schwache neutrale σ- und π-Donoren unter Bildung der kationischen Komplexe [(PPh3)2(CO)ClRIrB]+X- (5-9) substituieren (B = PPh3, CH3CN, H2O, (CH3)2CO, THF, C2H4). Die Struktur der Schlüsselverbindung (PPh3)2(CO)Cl(H)IrFBF3 (3c) mit koordiniertem Tetrafluoroborat wurde röntgenographisch bestimmt.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19821150622
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