Yb 7 Ni 4 InGe 12 : a quaternary compound having mixed valent Yb atoms grown from indium flux

The new intermetallic compound Yb 7 Ni 4 InGe 12 was obtained as large silver needle shaped single crystals from reactive indium flux. Single crystal X-ray diffraction suggests that Yb 7 Ni 4 InGe 12 crystallizes in the Yb 7 Co 4 InGe 12 structure type, and tetragonal space group P 4/ m and lattice...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2015, Vol.44 (12), p.5797-5804
Main Authors: Subbarao, Udumula, Jana, Rajkumar, Chondroudi, Maria, Balasubramanian, Mahalingam, Kanatzidis, Mercouri G., Peter, Sebastian C.
Format: Article
Language:English
Subjects:
Intermetallics
mixed valence
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Summary:The new intermetallic compound Yb 7 Ni 4 InGe 12 was obtained as large silver needle shaped single crystals from reactive indium flux. Single crystal X-ray diffraction suggests that Yb 7 Ni 4 InGe 12 crystallizes in the Yb 7 Co 4 InGe 12 structure type, and tetragonal space group P 4/ m and lattice constants are a = b = 10.291(2) Å and c = 4.1460(8) Å. The crystal structure of Yb 7 Ni 4 InGe 12 consists of columnar units of three different types of channels filled with the Yb atoms. The crystal structure of Yb 7 Ni 4 InGe 12 is closely related to Yb 5 Ni 4 Ge 10 . The effective magnetic moment obtained from the magnetic susceptibility measurements in the temperature range 200–300 K is 3.66 μ B /Yb suggests mixed/intermediate valence behavior of ytterbium atoms. X-ray absorption near edge spectroscopy (XANES) confirms that Yb 7 Ni 4 InGe 12 exhibits mixed valence.
ISSN:1477-9226
1477-9234
DOI:10.1039/C4DT03783A