EuIrIn4 with LaCoAl4 Type Structure – Synthesis, Magnetic Properties, and 151Eu Mössbauer Spectroscopy. Issue 16 (8th April 2020)

• Record Type: Journal Article
• Authors: Klenner, Steffen; Bönnighausen, Judith; Pöttgen, Rainer
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 646:Issue 16(2020)
• Page Start: 1359
• Page End: 1364
• Publication Date: 2020-04-08
• Subjects: Intermetallics -- Indium -- Structure elucidation -- Magnetic properties -- Mössbauer spectroscopy; Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.202000075
• Languages: English
• ISSNs: 0044-2313

Abstract

Abstract : LaCoAl4 type EuIrIn4 was synthesized by induction‐melting of the elements in a sealed tantalum ampoule, followed by annealing of the sample in a high‐frequency or in a muffle furnace. The EuIrIn4 structure was refined from single‐crystal X‐ray diffraction data: Pmma, a = 860.65(3), b = 430.33(6), c = 757.65(7) pm, wR = 0.0748, 633 F 2 values and 24 variables. The striking building units are iridium‐centered trigonal prisms of indium atoms, distorted bcc indium cubes and a pentagonal prismatic indium coordination of the europium atoms. Within the three‐dimensional [IrIn4 ] 2– polyanionic network the Ir–In and In–In distances range from 260–288 pm and 306–332 pm, respectively. The divalent ground state of europium was manifested through magnetic [7.96(1) μB / Eu atom, T N = 7.9(1) K] and 151 Eu Mössbauer spectroscopic data [ δ = –10.54(2) mm· s –1 ; Bhf = 19.1(1) T at 6 K]. Abstract :