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
- 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), Journal Name: Organometallics; (USA) Vol. 9:5; ISSN 0276-7333; ISSN ORGND
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKYNES
CATALYSTS
CHEMICAL REACTIONS
CRYSTAL STRUCTURE
DATA
DATA ANALYSIS
ELEMENTS
EXPERIMENTAL DATA
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGENATION
INFORMATION
IRIDIUM
MEASURING INSTRUMENTS
MEASURING METHODS
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
PLATINUM METALS
TRANSITION ELEMENTS
400201* -- Chemical & Physicochemical Properties
ALKYNES
CATALYSTS
CHEMICAL REACTIONS
CRYSTAL STRUCTURE
DATA
DATA ANALYSIS
ELEMENTS
EXPERIMENTAL DATA
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGENATION
INFORMATION
IRIDIUM
MEASURING INSTRUMENTS
MEASURING METHODS
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
PLATINUM METALS
TRANSITION ELEMENTS