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I need the value of the second electron affinity of Te, i.e. the energy change associated with the attachment of an electron to a $\ce{Te-}$ anion $$\ce{Te- + e- -> Te^{2-}}$$ In the books (e.g. J. Huheey, E. Keiter, R. Keiter; Inorganic Chemistry: Principles of Structure and Reactivity, 4th Ed.) I find second electron affinities only for certain elements from the periods 2,3,4 of the Periodic Table but not for tellurium.

I found a paper[1] that shows how to calculate the second electron affinities, for different elements, and gives an example how to do it for the oxygen.

The calculations use Coulomb and exchange integrals $\mathrm{J_{xy}}$ and $\mathrm{K_{xy}}$ for two electrons in different 2p orbitals, and with the same spin.

Do I understand correctly, for tellurium, I need the values of these integrals for two electrons in different 5p orbitals, and with the same spin?

Is there any software package where I can calculate these integrals or is there a paper or a book where these values are calculated? Is there another way to calculate the second electron affinity of Te or a paper where it is calculated or measured?

Reference:

  1. Pearson, R. G. Negative electron affinities of nonmetallic elements. Inorg. Chem. 1991, 30 (14), 2856–2858 DOI: 10.1021/ic00014a008.
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    $\begingroup$ Calculations of negative ions are less reliable than those of positive or neutral particles, and those of doubly negative ions are worse still. Second electron affinity is a tricky thing. I guess many elements don't have it at all. $\endgroup$
    – Ivan Neretin
    Apr 9, 2019 at 5:37
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    $\begingroup$ You can certainly always calculate a second electron affinity in as given methodology, if you can measure this, and whether this is reliable is a completely different story. $\endgroup$
    – Martin - マーチン ♦
    Apr 9, 2019 at 19:16

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