DQMP - Informal Seminar - 25.09.2023 - 15:00 - Prof. Dr. Wojciech Grochala

25.09.2023 15:00 – 16:00

Physics of Ag(II) species: a 2023 update
Prof. Dr Wojciech Grochala
Center of New Technologies, University of Warsaw, Pologne

Silver is placed between copper and gold in the Periodic Table but properties of these three elements differ to a large extent. All three have important applications, but only copper has been used by biological evolution. Of the two noble ones, silver is more abundant and much cheaper than gold, with five available oxidation states (–1, 0, +1, +2, +3) [1]. One particularly interesting among them is Ag(2+); it is an immensely strong de-electronator (oxidizer) with an open shell d9 electronic configuration analogous to that of Cu(2+) [1]. This feature leads to strong mixing of silver/nonmetal states in all chemical compounds of Ag(2+), which results in strong superexchange. An active quest for strongly-coupled low-dimensional magnets and superconductor precursors has been conducted for the last two decades [2,3]. The status of this quest as of 2018 was summarized [4].

The talk will focus on the most recent findings in the physics of Ag(2+) covering the 2018-23 period.

Literature
[1] Grochala W, Hoffmann R, ANGEW CHEM INT ED ENGL 40 (15): 2742-2781 2001.
[2] Gawraczyński J, et al., PROC NAT ACAD SCI USA 116(5): 1495-1500 2019.
[3] Malinowski PJ, et al., ANGEW CHEM INT ED ENGL 49(9): 1683-1686 2010.
[4] Grochala W, J SUPERCOND NOVEL MAGNET 31(3): 737-752 2018.



Organized by : Prof. Van der Marel

Lieu

Bâtiment: Ecole de Physique

Salle MaNEP

entrée libre