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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 8, Number 5
BKCSDE 8(5)
May 20, 1987

Title	The [M(cod)(PPh3)2] PF6 (M = Rh, Ir; cod = 1,5-cyclooctadiene) Mediated Activiation of Aldehyde C-H Bond
Author	Jaejung Ko*, Wan-Chul Joo
Keywords
Abstract	Acetone solution of quinoline-8-carbaldehyde reacts with [Rh(cod)(PPh3)2] PF6 and [Ir(cod)(PPh3)2] PF6 to yield [Rh(NC9H6CO)(H)(PPh3)2(CH3COCH3)] PF6 (1) and [Ir(NC9H6CO)(H)(PPh3)2(CH3COCH3)] PF6 (2), respectively. The compound [Ir(cod)(PPh3)2] PF6 also reacts with Ph2PC6H4-o-CHO in the acetone / H2O mixture to give *[Ir(Ph2PC6H4-o-CO)(H)(PPh3)2(CH3COCH3)] PF6 (3). Compounds 1, 2, and 3 were characterized by infrared, 1H NMR, 31P NMR spectra and conductivity measurement. The 1H NMR spectra of 1, 2, and 3 support the presence of a terminal hydride that is cis the phosphine. The IR band of 3 at 2185 cm-1 which is assigned to ν(Ir-H), and the hydride cleavage reaction of 3 with CCl4, provide evidence for the Ir-H bond.
Page	372 - 376
Full Text	PDF

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