"A simple model for A@B endohedral interactions"
Prof. Pekka Pyykkö
Department of Chemistry
University of Helsinki
Related paper
Wang, Straka, Pyykkö, Phys. Chem. Chem. Phys. 12, 6187-6203 (2010)
and seminar "Metallophilicity" in TTU.
Other lectures of prof. Pyykkö in TTU on the same week (host prof.
Toomas Tamm)
Tuesday at 08:00-09:30 for undergraduates on "Understanding the
Periodic System"
Wednesday at 16:00 a 45' departmental seminar (see Abstract below),
Thursday at 09:00 a 4th-year inorganic seminar on "Metallophilicity".
Abstract
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Relativistic effects on molecular electronic structure [1,2] can be
treated by replacing the Schrödinger equation by the Dirac
equation. They can also be qualitatively understood by simple
order-of-magnitude arguments, now mentioned in most inorganic
textbooks.
Some examples are the nobility, dominant trivalency and yellow
colour of gold and probably the liquidity of mercury. A recent
example is the lead-acid battery. Over 80 percent of its voltage
come from relativistic effects. Cars start due to relativity [3].
The next physical level, quantum electrodynamics [4] will be
much smaller, and may have been "the last train from physics to
chemistry", at the level of fundamental interactions.
1. P. Pyykkö and J.-P. Desclaux, "Relativity and the periodic
system of elements", Acc. Chem. Res. 12 (1979) 276.
2. P. Pyykkö, "Relativistic effects in structural chemistry",
Chem. Rev. 88 (1988) 563.
3. R. Ahuja, A. Blomqvist, P. Larsson, P. Pyykkö and P. Zaleski-
Ejgierd, "Relativity and the lead-acid battery",
Phys. Rev. Lett. 106, 018301 (2011).
4. P. Pyykkö, "The physics behind chemistry, and the Periodic Table",
Chem. Rev. (submitted).
The speaker's home page is: www.chem.helsinki.fi/~pyykko.
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