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Rhodium(I) carbonyl complexes of ether‐phosphine ligands and their reactivity
Author(s) -
Das Pankaj,
Sharma Manab,
Kumari Nandini,
Konwar Dilip,
Dutta Dipak Kumar
Publication year - 2002
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.300
Subject(s) - chemistry , rhodium , phosphine , carbonylation , oxidative addition , reactivity (psychology) , medicinal chemistry , hydroformylation , catalysis , ether , nuclear magnetic resonance spectroscopy , chelation , yield (engineering) , halide , methanol , stereochemistry , carbon monoxide , organic chemistry , medicine , alternative medicine , pathology , materials science , metallurgy
The reactions of dimeric complex [Rh(CO) 2 Cl] 2 with hemilabile ether‐phosphine ligands Ph 2 P(CH 2 ) n OR [ n = 1, R = CH 3 (a); n = 2, R = C 2 H 5 (b)] yield cis ‐[Rh(CO) 2 Cl(P ∼ O)] (1) [P ∼ O = η 1 ‐(P) coordinated]. Halide abstraction reactions of 1 with AgClO 4 produce cis ‐[Rh(CO) 2 (P ∩ O)]ClO 4 (2) [P ∩ O = η 2 ‐(P,O)chelated]. Oxidative addition reactions of 1 with CH 3 I and I 2 give rhodium(III) complexes [Rh(CO)(COCH 3 )ClI(P ∩ O)] (3) and [Rh(CO)ClI 2 (P ∩ O)] (4) respectively. The complexes have been characterized by elemental analyses, IR, 1 H, 13 C and 31 P NMR spectroscopy. The catalytic activity of 1 for carbonylation of methanol is higher than that of the well‐known [Rh(CO) 2 I 2 ] − species. Copyright © 2002 John Wiley & Sons, Ltd.
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