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Mar 14 – 17, 2022
Europe/Berlin timezone

LTP I: Ordered and disordered binary beryllium pnictides: between Zintl polyanions and Grimm-Sommerfeld compounds

Mar 15, 2022, 2:20 PM
13m
Talk Young crystallographers Lightning Talks Young Crystallographers Lightning Talks

Speaker

Alexander Feige (Institute for Mineralogy, Crystallography and Materials Science, Leipzig University, Germany)

Description

In solid-state chemistry, there is an intriguing number of binary systems lack characterization, especially in combination with the element beryllium. The limited knowledge promises a rich and unusual structural chemistry of this element. The few results concerning Be pnictides include the disordered diamond-like structure of BeP2. Preliminary work based on qualitative evaluation of powder X-ray diffraction data of BeAs2 and BeSb2 indicates related structures for both compounds. Precise structural data require very accurate diffraction data due to the large difference in scattering factors. Despite the simple stoichiometry, complete structural analysis proved difficult as the crystals obtained are much too small for laboratory data collection. We now employed a combined approach using microfocused synchrotron radiation, electron diffraction and HRTEM.

Primary author

Alexander Feige (Institute for Mineralogy, Crystallography and Materials Science, Leipzig University, Germany)

Co-authors

Laetitia Bradaczek (Institute for Mineralogy, Crystallography and Materials Science, Leipzig University, Germany) Marvin Michak (Institute for Mineralogy, Crystallography and Materials Science, Leipzig University, Germany) Daniel Günther (Institute for Mineralogy, Crystallography and Materials Science, Leipzig University, Germany) Christopher Benndorf (Universität Leipzig) Badal Mondal (Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry, Crystallography and Materials Science, Leipzig University, Germany) Maxim Grauer (Universität Leipzig) Lennart Staab (Universität Leipzig) Ralf Tonner-Zech (Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry, Leipzig University, Germany) Oliver Oeckler (Universität Leipzig)

Presentation materials