Phosphorus, Sulfur and Silicon and the Related Elements p. 2359 - 2369 (2007)
Update date:2022-08-03
Topics:
Olive, Gilles
Rockenbauer, Antal
Rozanska, Xavier
Jacques, Alain
Peeters, Daniel
German, Anton
The synthesis and the full characterization of two new linear bisphosphonates (tetraethyl(N-tert-butyl-1-aminoethan-1,1-diyl)bisphosphonate and tetraethyl(N-sec-butyl-1-aminoethan-1,1-diyl)bisphosphonate), and the first analysis of the ESR spectra of the corresponding nitroxides is reported. The preliminary results of theoretical calculations on model compounds suggest a small B0 (in the McConnell equation). The results of bisphosphonate ester and bisphosphonic acid are similar. The discrepancies of P coupling for the diphosphorus compound stems from B2 that is different when the dihedral angle is larger than 90.
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