Premium
A Missing Rare‐Earth Oxide Halide Structure Now Observed For Scandium Oxide Iodide, ScOI
Author(s) -
Zimmermann Sina,
Meyer Gerd
Publication year - 2008
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200800164
Subject(s) - scandium , sublimation (psychology) , iodide , oxide , crystallography , monoclinic crystal system , halide , chemistry , metal , rare earth , crystal structure , inorganic chemistry , materials science , mineralogy , psychology , organic chemistry , psychotherapist
Single crystals of ScOI were obtained from the residue of a vacuum sublimation of crude ScI 3 . The colourless plates crystallize with a new structure type: Monoclinic, C 2/ m , Z = 8, a = 1933.3(6) pm, b = 386.10(8) pm, c = 722.4(2) pm, β = 93.51(3)°, V m = 538.2(3) cm 3 mol −1 . The structure represents a missing link between the YOF/SmSI type variants (CN of the metal ion 4+3, only 3 6 nets stacked) and the PbFCl and FeOCl structure types (only 4 4 nets stacked, CN 4+4 and 4+2, respectively). In ScOI there are 4 4 (Sc, O) and 3 6 nets (I) stacked such that Sc III has a coordination number of 4+3.