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Issue 18, 1974
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Magnetic double resonance studies of trimethylstannylphosphines and their complexes

Abstract

The reduced coupling constant 1K(PSn) has substantial negative values in the compounds (Me3Sn)3–nPhnP (n= 0–2) and increases algebraically to values close to zero in transition metal carbonyl complexes (Me3Sn)3–nPhnPM(CO)5(M = Cr, MO, or W). This behaviour parallels that of 1K(PC) in analogous compounds but there is a substantial negative contribution in the tin-containing compounds which is attributed to a larger energy gap between the phosphorus and tin valence atomic orbitals. In contrast with the behaviour of triorganophosphines the phosphorus chemical shifts do not vary linearly with n, and the changes in phosphorus shielding which accompany complex formation are discussed.

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Article type: Paper
DOI: 10.1039/DT9740001977
Citation: J. Chem. Soc., Dalton Trans., 1974,0, 1977-1979
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    Magnetic double resonance studies of trimethylstannylphosphines and their complexes

    W. McFarlane and D. S. Rycroft, J. Chem. Soc., Dalton Trans., 1974, 0, 1977
    DOI: 10.1039/DT9740001977

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