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Syntheses and Structural Studies of New Two-dimensional Quaternary Chalcogenides, A₂MPd₃Q₆ (A = Rb, Cs; M = Zr, Hf; Q = S, Se)
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | 윤호섭 | - |
| dc.contributor.author | 박현규 | - |
| dc.date.accessioned | 2025-01-25T01:35:59Z | - |
| dc.date.available | 2025-01-25T01:35:59Z | - |
| dc.date.issued | 2023-02 | - |
| dc.identifier.other | 32468 | - |
| dc.identifier.uri | https://dspace.ajou.ac.kr/handle/2018.oak/24453 | - |
| dc.description | 학위논문(석사)--아주대학교 일반대학원 :에너지시스템학과,2023. 2 | - |
| dc.description.tableofcontents | INTRODUCTION 1 <br>EXPERIMENT 3 <br> Synthesis 3 <br> X-ray Crystallography 4 <br>RESULT AND DISCUSSION 12 <br> Conclusion 21 <br>References 47 | - |
| dc.language.iso | eng | - |
| dc.publisher | The Graduate School, Ajou University | - |
| dc.rights | 아주대학교 논문은 저작권에 의해 보호받습니다. | - |
| dc.title | Syntheses and Structural Studies of New Two-dimensional Quaternary Chalcogenides, A₂MPd₃Q₆ (A = Rb, Cs; M = Zr, Hf; Q = S, Se) | - |
| dc.title.alternative | 새로운 2 차원 사성분계 칼코젠 화합물의 합성 및 구조 연구 | - |
| dc.type | Thesis | - |
| dc.contributor.affiliation | 아주대학교 대학원 | - |
| dc.contributor.alternativeName | Hyeon-gyu Park | - |
| dc.contributor.department | 일반대학원 에너지시스템학과 | - |
| dc.date.awarded | 2023-02 | - |
| dc.description.degree | Master | - |
| dc.identifier.localId | T000000032468 | - |
| dc.identifier.url | https://dcoll.ajou.ac.kr/dcollection/common/orgView/000000032468 | - |
| dc.subject.keyword | chalcogenide | - |
| dc.subject.keyword | crystal structure | - |
| dc.description.alternativeAbstract | The new quaternary palladium chalcogenides, Rb2ZrPd3S6, Rb2HfPd3S6 and Cs2ZrPd3Se6 have been prepared from elemental powders through alkali metal halide flux methods and they are structurally characterized by single crystal X-ray diffraction techniques. They adopt two-dimensional layered structures. In these layers, there are two basic building blocks centered by metals. The early transition groups 4 metals (Zr, Hf) are surrounded by six Q (S, Se) atoms in a trigonal prismatic fashion and Pd atoms are coordinated to four square plane Q atoms. The structural variations of these phases come from the different connecting mode of these building blocks. <br>Two MQ6 units are bridged by two Pd atoms to form the basic repeating units, M2Pd2Q12. These units are linked together to complete the infinite anionic two-dimensional layer, 2¦∞[MPd3Q62-]. These layers stack on top of each other and the Alkali metal cations reside between the layers to satisfy the charge neutrality and complete the three-dimensional structure. <br>A series of new quaternary group 4 metal palladium chalcogenides, A2MPd3Q6 (A = Rb, Cs; M = Zr, Hf; Q = S, Se) have been prepared from elements with the use of alkali metal halide fluxes and they are structurally characterized by single crystal X-ray diffraction methods. They are isostructural and the structure of the title compounds consists of anionic 2¦∞[MPd3Q62-] slabs and alkali metal ions. In the slab, the group 4 metals, M are surrounded by six Q atoms in a trigonal prismatic fashion and the Pd atoms are coordinated to four Q atoms of a square plane. Two hexagons made of six edge-sharing square planar PdQ4 are interconnected by two trigonal prismatic MQ6 to form the basic repeating unit, M2Pd12Q28. These are linked together to form the infinite anionic two-dimensional 2¦∞[MPd3Q62-] slabs. These slabs stack on top of each other the alkali metal cations reside between the slabs to satisfy the change neutrality and complete the three-dimensional structure. No strong Q-Q bonding interaction is found in this phase and the charge valence of the title compounds should be described as [A+]2[M4+][Pd2+]3[Q2-]6 (A = Rb, Cs; M = Zr, Hf; Q = S, Se). | - |
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- Graduate School of Ajou University > Department of Energy Systems > 3. Theses(Master)
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