Conclusions
19F-{1H} NMR has been used to investigate the comparative efficiency of transfer of electronic effects of substituants (EES) through metal-sulfur binuclear bridge groupings, in model systems ArnMSC6H4F−4 (M=Hg, Sn, CH2; n=1, 3). In transmission capability, Hg-S and Sn-S are very little different from the mononuclear analogs Hg and Sn. The order of arrangement of the units in the Hg-S bridge has no effect on the transmission capability. The CH2-S bridge has a greater transmission capability than Hg-S. The EES transfer efficiency through the metal-sulfur bridge is much lower in coordinating polar solvents. An estimate has been made of the relative contributions of dipole-dipole and coordination interactions with the solvent to the overall effect in lowering the transmission capability.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 803–809, April, 1983.
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Pombrik, S.I., Golovchenko, L.S., Peregudov, A.S. et al. 19F NMR study of transmission capability of Hg-S and Sn-S binuclear bridge groupings. Russ Chem Bull 32, 732–737 (1983). https://doi.org/10.1007/BF00953465
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DOI: https://doi.org/10.1007/BF00953465