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Gd 3 Pt 4 In 12 and Tb 3 Pt 4 In 12 — New Ternary Indides with Condensed Distorted [PtIn 6 ] Trigonal Prisms
Author(s) -
Rodewald Ute Ch.,
Zaremba Vasyl' I.,
Galadzhun Yaroslav V.,
Hoffmann RolfDieter,
Pöttgen Rainer
Publication year - 2002
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 - 10.1002/1521-3749(200211)628:11<2293::aid-zaac2293>3.0.co;2-3
Subject(s) - indium , crystallography , chemistry , ternary operation , trigonal crystal system , gadolinium , single crystal , crystal structure , stereochemistry , computer science , programming language , organic chemistry
The ternary indium compounds Gd 3 Pt 4 In 12 and Tb 3 Pt 4 In 12 were synthesized from an indium flux. Arc‐melted precursor alloys with the starting compositions ∼GdPtIn 4 and ∼TbPtIn 4 were annealed with a slight excess of indium at 1200 K followed by slow cooling (5 K/h) to 870 K. Both compounds were investigated by X‐ray powder diffraction: a = 990.5(1), c = 1529.5(3) pm for Gd 3 Pt 4 In 12 and a = 988.65(9), c = 1524.0(1) pm for Tb 3 Pt 4 In 12 . The structure of the gadolinium compound was solved and refined from single crystal X‐ray data: P 3¯ m 1, wR2 = 0.0470, 1469 F 2 values and 62 variable parameters. Both crystallographically different platinum sites have a slightly distorted trigonal prismatic indium coordination. These [PtIn 6 ] prisms are condensed via common edges and corners forming a complex three‐dimensional [Pt 12 In 32 ] network. The gadolinium, In1 and In7 atoms fill cavities within this polyanion. Tb 3 Pt 4 In 12 is isotypic with the gadolinium compound.