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4성분계 크롬 Thiophosphate 계열 화합물의 합성·구조 및 특성
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | 윤호섭 | - |
| dc.contributor.author | 나주란 | - |
| dc.date.accessioned | 2018-11-08T07:53:29Z | - |
| dc.date.available | 2018-11-08T07:53:29Z | - |
| dc.date.issued | 2010-02 | - |
| dc.identifier.other | 10336 | - |
| dc.identifier.uri | https://dspace.ajou.ac.kr/handle/2018.oak/8495 | - |
| dc.description | 학위논문(석사)--아주대학교 일반대학원 :에너지시스템학부,2010. 2 | - |
| dc.description.tableofcontents | ABSTRACT ABSTRACT(KOREA) INTRODUCTION CHAPTER Ι. Synthesis and Characterization of New Zero-dimensional Chromium Thiophosphates, Cs2CrPS6 1. Abstract 2. Experimental Synthesis Crystallographic studies 3. Result and discussion 4. Figures 5. Tables CHAPTER Ⅱ. Synthesis and Characterization of New One-dimensional Chromium Thiophosphates, ACrPS5 (A = Rb, Cs) 1. Abstract 2. Experimental Synthesis Crystallographic studies UV/Vis spectroscopy 3. Result and discussion 4. Figures 5. Tables CHAPTER Ⅲ. Synthesis and Characterization of New Two-dimensional Chromium Thiophosphates, ACrP2S7 (A = K, Cs, Rb) 1. Abstract 2. Experimental Synthesis Crystallographic studies Magnetic propertires 3. Result and discussion 4. Figures 5. Tables CHAPTER ΙV. Synthesis and Characterization of New Two-dimensional Chromium Thiophosphates, RbCrP2S6 1. Abstract 2. Experimental Synthesis Crystallographic studies 3. Result and Discussion 4. Figures 5. Tables Appendix. Synthesis and Structural Determination of a New Three-Dimensional Zirconium Germanium Sulfide, Rb2ZrGe5S13 1. Abstract 2. Experimental Synthesis crystallographic studies UV/Vis spectroscopy 3. Result and Discussion 4. Figures 5. Tables REFERENCE | - |
| dc.language.iso | eng | - |
| dc.publisher | The Graduate School, Ajou University | - |
| dc.rights | 아주대학교 논문은 저작권에 의해 보호받습니다. | - |
| dc.title | 4성분계 크롬 Thiophosphate 계열 화합물의 합성·구조 및 특성 | - |
| dc.type | Thesis | - |
| dc.contributor.affiliation | 아주대학교 일반대학원 | - |
| dc.contributor.department | 일반대학원 에너지시스템학부 | - |
| dc.date.awarded | 2010. 2 | - |
| dc.description.degree | Master | - |
| dc.identifier.localId | 568591 | - |
| dc.identifier.url | http://dcoll.ajou.ac.kr:9080/dcollection/jsp/common/DcLoOrgPer.jsp?sItemId=000000010336 | - |
| dc.subject.keyword | Quaternary Chromium Thiophosphates | - |
| dc.subject.keyword | Thiophosphate | - |
| dc.subject.keyword | chalcogen | - |
| dc.subject.keyword | alkali metal flux method | - |
| dc.description.alternativeAbstract | We reported the synthesis of the quaternary alkali metal chromium thiophosphate compounds using reaction of the elements with eutectic alkali metal halide fluxes (KCl/LiCl or RbCl/LiCl or CsCl/LiCl). The crystal structures of the these compounds have been structurally characterized by single crystal X-ray diffraction techniques. The quaternary alkali metal chromium thiophosphate compounds have dark brownish color and a similar shape. First polyhedron-shaped dark brown colored crystal of Cs2CrPS6 crystallizes in the space group P21/n of the monoclinic system with a unit cell parameter ; a = 14.454(5), b = 8.972(3), c = 9.029(3) Å, β = 102.74(3)˚. The structure of contain of molecular cluster, [Cr2P2S12]4-. The molecular cluster of [Cr2P2S12]4- is composed of isolated edge sharing [CrS6] octahedra and [PS4] tetrahedra. This cluster is stabilized through the electrostatic interaction with cesium ions. In conclusion, Cs2CrPS6 compound has zero dimensional character. The ACrPS5(A = Rb, Cs) crystals have dark brown color polyhedra shaped. These compounds crystallized in the monoclinic space group P21/c. The crystal structures of the compounds comprise one dimensional [CrPS5 −] chains separated from one another by alkali metal cations (Rb+, Cs+). The linear chains are built up from the basic repeating unit, [Cr2(PS4)2S2]2-, which is composed of isolated edge sharing [CrS6] octahedra and [PS4] tetrahedra. These repeating units are linked together sharing two μ-S atoms to from the one dimensional [CrPS5 −] chains. The alkali cations spread between chains and there are only van der Waals interactions between them. The classical charge valence can be [A+][Cr4+][P5+][S2-]5(A = Rb, Cs). The ACrP2S7(A = K, Rb, Cs) crystals have needle-plate shaped and dark brown color. These compounds crystallized in the monoclinic space group C2 . The crystal structures of the compounds comprise two dimensional described as [CrP2S7 −] layers separated from one another by alkali metal cations (K+, Rb+, Cs+). The two dimensional structures of ACrP2S7(A = K, Rb, Cs), built from bitetrahadral [P2S7] units sharing edges and corner with [CrS6] octahedra. The [P2S7] unit is comprised of two [PS4] units sharing common corner. The ACrP2S7(A = K, Rb, Cs) structures are isostructural with RbVP2S7 and KMP2S7 (M = Cr, V and In). The classical charge valence if the compound can be written as [A+][Cr3+][[P5+]2[S2-]7 (A = K, Rb, Cs). Finally, the compound of Rb2CrP2S6 crystals have plate shape and dark brown color. Rb2CrP2S6 crystallizes in the space group Pbca. These [CrS6] octahedral units are linked by sharing three μ-S atoms of [P2S6]4− anions to form the infinite two-dimensional [CrP2∞2S6 −] layers. The classical charge valence of these compounds should be represented by [Rb+][Cr3+][P2S64-]. | - |
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