Synthesis and Rearrangement of Diphosphorus Analogues of Amidinium Salts
β Scribed by Kato, Tsuyoshi; Gornitzka, Heinz; Baceiredo, Antoine; Schoeller, Wolfgang W.; Bertrand, Guy
- Book ID
- 120971838
- Publisher
- American Chemical Society
- Year
- 2002
- Tongue
- English
- Weight
- 161 KB
- Volume
- 124
- Category
- Article
- ISSN
- 0002-7863
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π SIMILAR VOLUMES
1H and 15N NMR chemical shifts of 12 semicyclic amidinium salts are reported. Their E/Z equilibria in solution were analyzed by 1D and 2D 1H and 15N NMR techniques. In the solid state the Z-conΓguration is observed.
assuming that the relationship may be linearly extrapolated, the radius of the proton in (11) is almost zero. The correlation between the location of the absorption band and the ionic radius of the central ion points to a steric effect. We assume that the molecule is spread in the plane so that the