Formation of a nickel carbon dioxide adduct and its transformation mediated by a Lewis acid

An uncommon nickel dinitrogen adduct and its tendency toward CO2 binding are investigated using a (PP(Me)P)Ni scaffold. (PP(Me)P)Ni(N2) (1) and {(PP(Me)P)Ni}2(μ-N2) (2) were prepared and their treatment with CO2 revealed the formation of (PP(Me)P)Ni(η(2)-CO2) (3). This is a new type of CO2 binding f...

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Bibliographic Details
Published inChemical communications (Cambridge, England) Vol. 50; no. 78; pp. 11458 - 11461
Main Authors Kim, Yeong-Eun, Kim, Jin, Lee, Yunho
Format Journal Article
LanguageEnglish
Published England 01.01.2014
Subjects
Adducts
Binding
Carbon dioxide
Formations
Lewis acid
Ligands
Nickel
Transformations
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Summary:An uncommon nickel dinitrogen adduct and its tendency toward CO2 binding are investigated using a (PP(Me)P)Ni scaffold. (PP(Me)P)Ni(N2) (1) and {(PP(Me)P)Ni}2(μ-N2) (2) were prepared and their treatment with CO2 revealed the formation of (PP(Me)P)Ni(η(2)-CO2) (3). This is a new type of CO2 binding for a zero-valent nickel center supported by three donor ligands, reminiscent of the CODH active site environment. Clear unique structural differences in 3 are evident when compared with previous 4-coordinate Ni-CO2 adducts. Compound 3 when treated with B(C6F5)3 gives the Lewis acid-base adduct (PP(Me)P)Ni{COOB(C6F5)3} (4) possessing a Ni-μ-CO2-κ(2)C,O-B moiety.
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ISSN:1359-7345
1364-548X
DOI:10.1039/c4cc04800h