Nuclear Magnetic Resonance Studies on Partially Deuteriated Transition Metal-Methyl Derivatives

DOI: 10.1039/DT9920003077

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 3077 - 3082 (1992)

Update date:2022-08-25

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Authors:

Green, Malcolm, L. H.

Hughes, Andrew K.

Popham, Neil A.

Stephens, Adam H. H.

Wong, Luet-Lok

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Article abstract of DOI:10.1039/DT9920003077

Nuclear magnetic resonance studies on show a strong temperature dependence of the isotope shift <δ(CH3)-δ(CH2D)> indicating the presence of a monoagostic methyl group.The magnitude and sign of the geminal coupling constant ²J(H-D) 2J(H-H)> and the isotope shift, together with the temperature dependence of this shift, have been recorded for , (dmpe = Me2PCH2CH2PMe2), nCl_5-n> (n = 1-3), (M = Ti, Zr of Hf), (M = Ti or Zr, thf =tetrahydrofuran), , , , (M = Ti, Zr or Hf) and .The isotope shifts for all these complexes are essentially temperature independent.A convenient synthesis of Li(CH2D) is described.

Full text of DOI:10.1039/DT9920003077

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