Models for multicenter catalysts. 4. Reactions of binuclear hydrides with alkynes and the structure of (Ir sub 2 (H) sub 2 Cl(CH sub 3 O sub 2 CC double bond C(H)CO sub 2 CH sub 3 ) sub 2 (CO) sub 2 (Ph sub 2 PCH sub 2 PPh sub 2 ) sub 2 )-(BF sub 4 ) sm bullet 3THF, a model hydrogenation intermediate containing mutually adjacent alkenyl and hydrido ligands

Journal Article · Tue May 01 00:00:00 EDT 1990 · Organometallics; (USA)

DOI:https://doi.org/10.1021/om00119a035· OSTI ID:6429086

Vaartstra, B A; Cowie, M ^[1]

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1. Univ. of Alberta, Edmonton (Canada)

The reaction of (Ir{sub 2}(H){sub 2}(CO){sub 2}({mu}-Cl)(DPM){sub 2})(BF{sub 4}) (1) with 2 equiv of dimethyl acetylenedicarboxylate (DMA) in THF or acetone yields (Ir{sub 2}(CH{sub 3}O{sub 2}CC{double bond}C(H)CO{sub 2}CH{sub 3}){sub 2}(CO){sub 2}({mu}-Cl)(DPM){sub 2})(BF{sub 4}). This cationic species is the result of alkyne insertion into both of the Ir-H bonds of compound 1. Further reaction of this species with dihydrogen yields (Ir{sub 2}(H){sub 2}Cl(CH{sub 3}O{sub 2}CC{double bond}C(H)CO{sub 2}CH{sub 3}){sub 2}(CO){sub 2}(DPM){sub 2})(BF{sub 4}) (DPM = Ph{sub 2}PCH{sub 2}PPh{sub 2}), which is a stable complex containing mutually adjacent alkenyl and hydrido ligands. This compound crystallizes in the space group P2{sub 1}/c with a = 18.675 (5) {angstrom}, b = 15.775 (3) {angstrom}, c = 26.371 (4) {angstrom}, {beta} = 96.38 (2){degree}, and Z = 4.

• OSTI ID: 6429086
• Journal Information: Organometallics; (USA), Vol. 9:5; ISSN 0276-7333
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALKYNES
CHEMICAL REACTIONS
CATALYSTS
HYDRIDES
CRYSTAL STRUCTURE
DATA ANALYSIS
EXPERIMENTAL DATA
HYDROGENATION
IRIDIUM
MEASURING INSTRUMENTS
MEASURING METHODS
DATA
ELEMENTS
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
PLATINUM METALS
TRANSITION ELEMENTS
400201* - Chemical & Physicochemical Properties