Conclusions
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1.
The relatively small values of the dipole moments of tetrakis(alkylthio)- and also of tetrakis(alkylsulfonyl)ethylenes indicate a certain structural symmetry of the molecules, and are possibly due to divergence of the SR groups from the plane of the central fragment.
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2.
In the reaction with group III metal halides, tetrakis(alkylthio)ethylenes display properties of polyfunctional electron-donors giving complexes with a 1∶1, 1∶2 composition and others with a more complex stoichiometry. Heats of formation and dipole moments of these complexes have been determined.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1552–1555, July, 1989.
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Isaeva, E.S., Dontsova, N.E., Petukhova, N.P. et al. Conformation of molecules and electron-donor properties of certain representatives of tetrakis(alkylthio)- and tetrakis-(alkylsulfonyl)ethylenes. Russ Chem Bull 38, 1419–1422 (1989). https://doi.org/10.1007/BF00978430
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DOI: https://doi.org/10.1007/BF00978430