Synthesis, structure and properties of SrAu{sub 3}In{sub 3} and EuAu{sub 3}In{sub 3}-New indides with gold zig-zag chains

Journal Article · Wed Aug 15 00:00:00 EDT 2007 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2007.05.026· OSTI ID:21043795

Muts, Ihor R ^[1]; Schappacher, Falko M; Hermes, Wilfried ^[1]; Zaremba, Vasyl' I ^[2]; Poettgen, Rainer ^[1]

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1. Institut fuer Anorganische und Analytische Chemie, Universitaet Muenster, Corrensstrasse 30, D-48149 Muenster (Germany)
2. Inorganic Chemistry Department, Ivan Franko National University of Lviv, Kyryla and Mephodiya Street 6, 79005 Lviv (Ukraine)

New indides SrAu{sub 3}In{sub 3} and EuAu{sub 3}In{sub 3} were synthesized by induction melting of the elements in sealed tantalum tubes. Both indides were characterized by X-ray diffraction on powders and single crystals. They crystallize with a new orthorhombic structure type: Pmmn, Z=2, a=455.26(9), b=775.9(2), c=904.9(2) pm, wR2=0.0425, 485 F{sup 2} values for SrAu{sub 3}In{sub 3} and a=454.2(2), b=768.1(6), c=907.3(6) pm, wR2=0.0495, 551 F{sup 2} values for EuAu{sub 3}In{sub 3} with 26 variables for each refinement. The gold and indium atoms build up three-dimensional [Au{sub 3}In{sub 3}] polyanionic networks, which leave distorted hexagonal channels for the strontium and europium atoms. Within the networks one observes Au2 atoms without Au-Au contacts and gold zig-zag chains (279 pm Au1-Au1 in EuAu{sub 3}In{sub 3}). The Au-In and In-In distances in EuAu{sub 3}In{sub 3} range from 270 to 290 and from 305 to 355 pm. The europium atoms within the distorted hexagonal channels have coordination number 14 (8 Au+6 In). EuAu{sub 3}In{sub 3} shows Curie-Weiss behavior above 50 K with an experimental magnetic moment of 8.1(1) {mu}B/Eu atom. {sup 151}Eu Moessbauer spectra show a single signal at {delta}=-11.31(1) mm/s, compatible with divalent europium. No magnetic ordering was detected down to 3 K. - Graphical abstract: The three-dimensional [Au{sub 3}In{sub 3}] network in SrAu{sub 3}In{sub 3}.

• OSTI ID: 21043795
• Journal Information: Journal of Solid State Chemistry, Vol. 180, Issue 8; Other Information: DOI: 10.1016/j.jssc.2007.05.026; PII: S0022-4596(07)00202-2; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COORDINATION NUMBER
EUROPIUM ALLOYS
GOLD ALLOYS
INDIUM ALLOYS
INTERMETALLIC COMPOUNDS
MAGNETIC MOMENTS
MAGNETIZATION
MOESSBAUER EFFECT
MONOCRYSTALS
ORTHORHOMBIC LATTICES
STRONTIUM ALLOYS
SYNTHESIS
TANTALUM
TEMPERATURE RANGE 0013-0065 K
X-RAY DIFFRACTION