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Cover Picture: ZAAC ‐ Journal of Inorganic and General Chemistry 7/2015
Publication year - 2015
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201590015
Subject(s) - europium , cover (algebra) , luminescence , hydride , crystallography , chemistry , physics , optics , organic chemistry , mechanical engineering , engineering , hydrogen
The cover picture shows the crystal structure of europium hydride chloride, EuHCl, with the PbFCl‐ (= matlockite‐)type structure in space group type P 4/ nmm ( c axis pointing up). Divalent europium (blue) is surrounded by four hydride (red) and five chloride (yellow) anions building a mono‐capped square antiprism. Eu(II) in EuHCl may be excited by UV light and emits bright green light (510 nm) as indicated by the blue and green arrows. This d‐f transition based luminescence can be seen in the background, which shows two ampoules with powder (left) and single crystals of EuHCl (right) under UV light. The bright luminescence and apparent absence of concentration quenching in this europium rich compound is surprising.More details are discussed in the article by Holger Kohlmann, Nathalie Kunkel, Thomas Schleid et al. on pp. 1220ff.