Tellurium physical constants

Lowry and his collaborators have determined a number of the physical constants of these supposed isomeric compounds (J. Chem. Soc., 1928, pp. 307, 1997, 3179 J. Soc. Chem. Ind., 1928, 47, 1246), but in face of Drew s work, which appears to disprove the isomerism, only the references are given here to Lowry s work. Lowry attributes the somerism to the non-equivalence, from the point of view of electron structure, of the halogen-tellurium linkings. 

The following physical constants have been determined3 for the preceding diethyl compounds Extinction coefficients of diethyl tellurium dihalides molecular conductivities of diethyl tellurium compounds at 25° C., and potentiometric titrations carried out on the two bases. 

Representative physical constants of selenium and tellurium are listed in... 

Cyclic voltammograms of tetrachalcogenoanthracenes of type (15) all show two reversible one-electron redox waves. Introduction of methyl groups lowers the oxidation potentials. Substitution of tellurium for selenium results in a considerable lowering of both the first and second oxidation potential. The electrochemistry of complexes with TCNQ and analogues of TCNQ is also included <90CL567,91BCJ2091 >, See T ables 1 and 2 for physical constants of donors and complexes with various acceptors. 

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