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Sichevych O, Prots Y, Utsumi Y, Akselrud L, Schmidt M, Burkhardt U, Coduri M, Schnelle W, Bobnar M, Wang YT, Wu YH, Tsuei KD, Tjeng LH, Grin Y. Intermediate-Valence Ytterbium Compound Yb 4Ga 24Pt 9: Synthesis, Crystal Structure, and Physical Properties. Inorg Chem 2017; 56:9343-9352. [PMID: 28718656 DOI: 10.1021/acs.inorgchem.7b01530] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The title compound was synthesized by a reaction of the elemental educts in a corundum crucible at 1200 °C under an Ar atmosphere. The excess of Ga used in the initial mixture served as a flux for the subsequent crystal growth at 600 °C. The crystal structure of Yb4Ga24Pt9 was determined from single-crystal X-ray diffraction data: new prototype of crystal structure, space group C2/m, Pearson symbol mS74, a = 7.4809(1) Å, b = 12.9546(2) Å, c = 13.2479(2) Å, β = 100.879(1)°, V = 1260.82(6) Å3, RF = 0.039 for 1781 observed reflections and 107 variable parameters. The structure is described as an ABABB stacking of two slabs with trigonal symmetry and compositions Yb4Ga6 (A) and Ga12Pt6 (B). The hard X-ray photoelectron spectrum (HAXPES) of Yb4Ga24Pt9 shows both Yb2+ and Yb3+ contributions as evidence of an intermediate valence state of ytterbium. The evaluated Yb valence of ∼2.5 is in good agreement with the results obtained from the magnetic susceptibility measurements. The compound is a bad metallic conductor.
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Affiliation(s)
- Olga Sichevych
- Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Yurii Prots
- Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Yuki Utsumi
- Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Lev Akselrud
- Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Marcus Schmidt
- Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Ulrich Burkhardt
- Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Mauro Coduri
- ESRF-The European Synchrotron , 38043 Grenoble, France
| | - Walter Schnelle
- Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Matej Bobnar
- Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Yu-Ting Wang
- Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Yu-Han Wu
- National Synchrotron Radiation Research Center , 101 Hsin-Ann Road, 30076 Hsinchu, Taiwan
| | - Ku-Ding Tsuei
- National Synchrotron Radiation Research Center , 101 Hsin-Ann Road, 30076 Hsinchu, Taiwan
| | - Liu Hao Tjeng
- Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Yuri Grin
- Max-Planck-Institut für Chemische Physik fester Stoffe , Nöthnitzer Straße 40, 01187 Dresden, Germany
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Wendorff M, R�hr C. Bin�re Indide AInx (x = 1, 2, 4; A = Ca, Sr, Ba, K, Rb) - Untersuchungen zu Strukturchemie und chemischer Bindung. Z Anorg Allg Chem 2005. [DOI: 10.1002/zaac.200400260] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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