Browsing Kjemisk institutt by Author "Andersen, Richard A"

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  • Metal alkyls programmed to generate metal alkylidenes by a-H abstraction: prognosis from NMR chemical shift 
    Gordon, Christopher P.; Yamamoto, Keishi; Searles, Keith; Shirase, Satoru; Andersen, Richard A; Eisenstein, Odile; Copéret, Christophe (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Metal alkylidenes, which are key organometallic intermediates in reactions such as olefination or alkene and alkane metathesis, are typically generated from metal dialkyl compounds [M](CH2R)2 that show distinctively ...
  • Metathesis Activity Encoded in the Metallacyclobutane Carbon-13 NMR Chemical Shift Tensors 
    Gordon, Christopher P.; Yamamoto, Keishi; Liao, Wei-Chih; Allouche, Florian; Andersen, Richard A; Copéret, Christophe; Raynaud, Christophe; Eisenstein, Odile (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    Metallacyclobutanes are an important class of organometallic intermediates, due to their role in olefin metathesis. They can have either planar or puckered rings associated with characteristic chemical and physical properties. ...
  • NMR chemical shift analysis decodes olefin oligo- and polymerization activity of d0 group 4 metal complexes 
    Gordon, Christopher; Shirase, Satoru; Yamamoto, Keishi; Andersen, Richard A; Eisenstein, Odile; Copéret, Christophe (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)
    0metal-alkyl complexes (M = Ti, Zr, and Hf) show specific activity and selectivity in olefin polymerization and oligomerization depending on their ligand set and charge. Here, we show by a combined experimental and ...