Transition metal NMR chemical shifts and polarizability effect in organometallic complexes |
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| Authors: | Alexey N Egorochkin Olga V Kuznetsova Nadiya M Khamaletdinova Yury A Kurskii Lada G Domratcheva‐Lvova Georgy A Domrachev |
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| Institution: | 1. G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 Tropinin Str., 603950 Nizhny Novgorod, Russia;2. Universidad Michoacana de San Nicolas de Hidalgo, Ciudad Universitaria, 58030 Morelia, Michoacán, Mexico |
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| Abstract: | The literature data on substituent influence on the 51V, 55Mn, 57Fe, 59Co, 61Ni, 95Mo, 103Rh, 183W, 187Os and 195Pt NMR chemical shifts (δ) and on J (M, P; M = Mn, Fe, Mo, Rh, W, Os) coupling constants have been analyzed for 30 series of the organometallic complexes. It has been established for the first time that the δ and J values depend on the inductive, resonance and polarizability effects of substituents. The polarizability effect is caused by the partial charge on the central M atom. The contribution of this effect ranges from 3 to 86%. Copyright © 2009 John Wiley & Sons, Ltd. |
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| Keywords: | NMR transition metal nuclei organometallic complexes inductive effects conjugation polarizability effects |
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