Use of palladium-catalyzed coupling reactions in the synthesis of heterobimetallic complexes. Preparation of bis(cyclopentadienyl)acetylene heterodinuclear complexes

Journal Article · Thu Mar 01 00:00:00 EST 1990 · Organometallics; (USA)

DOI:https://doi.org/10.1021/om00117a025· OSTI ID:6380290

Sterzo, C L; Stille, J K ^[1]

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1. Colorado State Univ., Fort Collins (USA)

The palladium-catalyzed coupling reactions of {eta}{sup 5}-iodocyclopentadienyl complexes of Fe, W, Mn, and Re with Bu{sub 3}SnC{triple bond}CH yield the corresponding {eta}{sup 5}-ethynylcyclopentadienyl derivatives ({eta}{sup 5}-HC{triple bond}CC{sub 5}H{sub 4})ML{sub n} (M = Fe, W, Mn, Re). Upon reaction with Et{sub 2}NSnR{sub 3} (R = Me, Bu), the acetylenic proton is replaced with a trialkyltin group, forming the {eta}{sup 5}((trialkylstannyl)ethynyl)cyclopentadienyl derivatives ({eta}{sup 5}-R{sub 3}SnC{triple bond}CC{sub 5}H{sub 4})ML{sub n}. A second palladium-catalyzed coupling reaction between these trialkyltin derivatives and ({eta}{sup 5}-iodocyclopentadienyl)metal complexes affords the heterobimetallic complexes L{sub n}M({eta}{sup 5}-C{sub 5}H{sub 4})C{triple bond}C({eta}{sup 5}-C{sub 5}H{sub 4})M{prime}L{sub m} (M and M{prime} = Fe, W, Mo, Mn, Re). The crystal structure of Ph{sub 3}P(CO){sub 2}Mn({eta}{sup 5}-C{sub 5}H{sub 4})C{triple bond}C({eta}{sup 5}-C{sub 5}H{sub 4})W(CO){sub 3}CH{sub 3} confirmed the general structure of these heterobimetallic complexes.

• OSTI ID: 6380290
• Journal Information: Organometallics; (USA), Vol. 9:3; ISSN 0276-7333
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
HOMOGENEOUS CATALYSIS
ORGANOMETALLIC COMPOUNDS
SYNTHESIS
CRYSTAL STRUCTURE
CYCLOPENTADIENE
DATA ANALYSIS
EXPERIMENTAL DATA
IRON
MANGANESE
MEASURING INSTRUMENTS
MEASURING METHODS
PALLADIUM
RHENIUM
TUNGSTEN
ALKENES
CATALYSIS
CYCLOALKENES
DATA
DIENES
ELEMENTS
HYDROCARBONS
INFORMATION
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
PLATINUM METALS
POLYENES
TRANSITION ELEMENTS
400201* - Chemical & Physicochemical Properties