Conclusions
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1.
The IR, PMR, and mass spectra of mono- and diacetamides and phosphides were studied.
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2.
Conjugation of the two carbonyl groups with the nitrogen atom in methyldiacetamide weakens the amide resonance in comparison with dimethylacetamide.
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3.
The conjugation of the carbonyl groups with the phosphorus atom does not change on going from dimethylaceto- to methyldiacetophosphide. This is due to the interaction of theπ-electrons of the carbonyl groups with the d-orbitals of the phosphorus atom.
Literature cited
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 2, pp. 391–394, February, 1968.
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Kostyanovskii, R.G., Yakshin, V.V., Zimont, S.L. et al. Difficulties in the interaction of the free electron pair in diacetophosphides and diacetamides. Russ Chem Bull 17, 377–380 (1968). https://doi.org/10.1007/BF00908447
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DOI: https://doi.org/10.1007/BF00908447