새로운 사성분계 티오인산염 A0.92Nb2PS10 의 합성과 결정구조 (A= K, Rb, Cs)
Synthesis and Crystal Structure of the New Quaternary Thiophosphates, A0.92Nb2PS10 (A = K, Rb, Cs)
- 주제(키워드) thiophosphate , crystal structure
- 발행기관 아주대학교
- 지도교수 윤호섭
- 발행년도 2015
- 학위수여년월 2015. 8
- 학위명 석사
- 학과 및 전공 일반대학원 에너지시스템학과
- 실제URI http://www.dcollection.net/handler/ajou/000000020535
- 본문언어 영어
- 저작권 아주대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
New quaternary thiophosphates, A0.92Nb2PS10 (A = K, Rb, Cs) have been synthesized by using reactive alkali metal halide fluxes (KCl, RbCl, CsCl) and structurally characterized by single crystal X-ray diffraction techniques. The crystal structure of A0.92Nb2PS10 are composed of the one-dimensional anionic chain, 1¦∞[Nb2PS100.92-], and alkali metal cations, K+, Rb+, or Cs+ staying in the van der Waals space among the chains through electrostatic interactions. The title compounds are closely related with the well-known stoichiometric phase ANb2PS10 (A = Na, K, Rb, Cs). While both phases share the common linear chains, 1¦∞[Nb2PS101-], the deficiency of cations found in the title compounds have caused the deformation of the chains and thus the chains show a sinusoidal curves. In this presentation, the comparison of the two structures will be discussed along with the relationships between cation stoichiometries and electronic effects on the linear chains.
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CONTENTS
TITLE. Synthesis and crystal structure of the new quaternary thiophosphates, A0.92Nb2PS10 (A = K, Rb, Cs) - 1
1. Abstract - 2
2. Introduction 3
3. Experimental - 8
Synthesis 8
X-ray Crystallography - 9
4. Result and discussion - 43
5. Conclusion 55
APPENDIX. Synthesis and crystal structure of the new one-dimensional quaternary tantalum thiophosphate, Cs3Ta2PS12 - 56
1. Abstract - 57
2. Introduction 58
3. Experimental - 59
Synthesis - 59
X-ray Crystallography - 60
4. Result and discussion - 63
REFERENCES 70
