Conclusions
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1.
The dipole moments of the dichlorides and diethyl esters of the styryl- and p-chlorostyrylphosphonic acids were determined. In the diethyl ester of p-chlorostyrylphosphonic acid the diethoxyphosphono group takes a substantial part in the common conjugation chain.
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2.
The diethoxyphosphono group and the phenyl ring in the diethyl esters of the p-halo- and p-nitro-α-cyanostyrylphosphonic acids are found in the trans-position.
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Literature cited
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2565–2567, November, 1971.
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Ishmaeva, E.A., Bondarenko, N.A. & Pudovik, A.N. Dipole moments of para-substituted styrylphosphonates. Russ Chem Bull 20, 2429–2431 (1971). https://doi.org/10.1007/BF00854328
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DOI: https://doi.org/10.1007/BF00854328