Zeitschrift für Kristallographie - Crystalline Materials
Editor-in-Chief: Pöttgen, Rainer
Ed. by Antipov, Evgeny / Bismayer, Ulrich / Boldyreva, Elena V. / Huppertz, Hubert / Petrícek, Václav / Tiekink, E. R. T.
12 Issues per year
IMPACT FACTOR increased in 2015: 2.560
Rank 8 out of 26 in category Cristallography in the 2015 Thomson Reuters Journal Citation Report/Science Edition
SCImago Journal Rank (SJR) 2015: 0.827
Source Normalized Impact per Paper (SNIP) 2015: 1.198
Impact per Publication (IPP) 2015: 1.834
Overlooked trigonal symmetry in structures reported with monoclinic centred Bravais lattices; trigonal description of Li8Pb3, PtTe, Pt3Te4, Pt2Te3, LiFe6Ge4, LiFe6Ge5, CaGa6Te10 and La3.266Mn1.1S6
About 250 inorganic structure types, reported with a monoclinic centred unit cell, were tested for overlooked trigonal symmetry and the metrics of the different “best” monoclinic cells describing an hR Bravais lattice were studied. Three-fold axes were detected in the compounds listed below, for which the crystallographic data were converted to the corresponding trigonal space groups:
PtTe: hR12, R[unk]m, a = 3.963, c = 19.98 Å, Z = 6
Pt3Te4: hR21, R[unk]m, a = 3.988, c = 35.39 Å, Z = 3
Pt2Te3: hR30, R[unk]m, a = 4.003, c = 50.89 Å, Z = 6
Li8Pb3: hR33, R[unk]m, a = 4.757, c = 32.05 Å, Z = 3
LiFe6Ge4: hR33, R[unk]m, a = 5.045, c = 19.66 Å, Z = 3
LiFe6Ge5: hR72, R[unk]m, a = 5.048, c = 43.64 Å, Z = 6
CaGa6Te10: hR105-3, R32, a = 14.42, c = 17.65 Å, Z = 6
La3.266Mn1.1S6: hR165-9.3, R3m, a = 14.08, c = 21.80 Å, Z = 15
It is recommended that these data be tested in future refinements. The recently refined “monoclinic” structure of Cs4PbCl6 is shown to be identical with earlier determined trigonal Cs4PbCl6.
The structures of the Pt tellurides may be interpreted as an intergrowth of Pt2Te2 (PtTe-type) and PtTe2 (CdI2-type) layers, whereas the structure of LiFe6Ge5 contains 14 Å thick MgFe6Ge6-type slabs (alternating Zr4Al3- and CeCo3B2-type layers), stacked with a shift. In LiFe6Ge4 similar, but thinner slabs are found. CaGa6Te10 is a normal valence compound where all Ga atoms centre Te4 tetrahedra to form an anionic tetrahedron complex where each individual GaTe4 tetrahedron is connected to the surrounding tetrahedra via 6 Ga-Te-Ga links.
Here you can find all Crossref-listed publications in which this article is cited. If you would like to receive automatic email messages as soon as this article is cited in other publications, simply activate the “Citation Alert” on the top of this page.