새로운 Niobium Thiophosphates의 합성과 구조
Synthesis and Structure of New Niobium Thiophosphates
- 주제(키워드) Niobium Thiophosphates , 합성 , 결정구조
- 발행기관 아주대학교 일반대학원
- 지도교수 윤호섭
- 발행년도 2008
- 학위수여년월 2008. 2
- 학위명 석사
- 학과 및 전공 일반대학원 에너지시스템학부
- 본문언어 영어
초록/요약
Structure of the new quaternary thiophosphate, Rb5.5Nb12P6S60, has been synthesized with the reactive halide flux and structurally characterized by single crystal X-ray diffraction techniques. The compound crystallizes in the orthorhombic space group Pmcb, three formula units in a cell of dimensions a=7.514A, b=13.785A, c= 76.514A, V=7925.4A3. The crystal structure of Rb5.5Nb12P6S60 is composed of the one-dimensional anionic chain, [Nb2PS10]x- and these chains are stabilized through the electrostatic interactions with Rb+ in the van der Waals gap among the chains. The structure of the new pentanary thiophosphate K0.35Cu0.5Nb2PS10 is made up of one-dimensional [Nb2PS10] chains along the [010] direction and these chains are separated from one another by Cu+ and disordered K+ ions. The chin is basically built up from bicapped trigonal prismatic [Nb2P12] unit and tetrahedral [PS4] groups. The [Nb2S12] units are connected together to from a linear [Nb2S9] chain by sharing the S-S prism edge. Nb-Nb distances [2.9026(8) A] along the chain and the anionic species S22- and S2- are observed. The structure of the new pentanary thiophosphate Rb0.50 Cu0.50 Nb2 PS10 is made up of one-dimensional [Nb2PS10] chains along the [010] direction and these chains are separated from one another by Cu+ and disordered Rb + ions. The chin is basically built up from bicapped trigonal prismatic [Nb2P12] unit and tetrahedral [PS4] groups. The [Nb2S12] units are connected together to from a linear [Nb2S9] chain by sharing the S-S prism edge. Nb-Nb interactions [2.9026(8) A] along the chain and the anionic species, S22- and S2- are observed.
more초록/요약
새로운 1차원 4성분계 thiophosphate, Rb5.5Nb12P6S60는 alkali metal halide 와 구성성분의 반응을 통해 합성하였고, 단 결정 X-선 회절 법에 의해 결정구조를 해석하였다. 화합물 Rb5.5Nb12P6S60은 a=7.514A, b=13.785A, c= 76.514A, V=7925.4A3 인 단위세포를 가지며, 사방정계(斜方晶系) 의 공간 군인 Pmcb로 결정화 한다. 화합물 Rb5.5Nb12P6S60은 1차원의 음이온 사슬인 [Nb2PS10]x로 구성되고, 이 사슬은 van der Waals gap 사이에서 Rb+와 정전기적인력으로 안정화된어진다. 새로운 1차원 5성분계 thiophosphate K0.35Cu0.5Nb2PS10는 1차원 [Nb2PS10]사슬이 Cu+와 연결되어 [010]방향을 따라 구성되고 K+이온은 disorder되어 있다. 그 사슬은 기본적으로 bicapped trigonal prismatic [Nb2P12]과 tetrahedral [PS4]로 구성된다. [Nb2S12]은 공유된 S-S prism edge의해서 1차원 [Nb2S9]로부터 연결된다. Nb-Nb의 거리 [2.9026(8) A]와 음이온 S22- and S2-이 관찰된다. 새로운 1차원 5성분계 thiophosphate Rb0.50 Cu0.50 Nb2 PS10는 1차원 [Nb2PS10]사슬이 Cu+와 연결되어 [010]방향을 따라 구성되고 Rb+이온은 disorder되어 있다. 그 사슬은 기본적으로 bicapped trigonal prismatic [Nb2P12]과 tetrahedral [PS4]로 구성된다. [Nb2S12]은 공유된 S-S prism edge의해서 1차원 [Nb2S9]로부터 연결된다. Nb-Nb의 거리 [2.9026(8) A]와 음이온 S22- and S2-이 관찰된다.
more목차
ABSTRACT 1
국문초록 3
CONTENTS 4
LIST OF TABLES 6
LIST OF FIGURES 8
Ⅰ. Synthesis and Crystal Structure of the New Quaternary Thiophosphate, Rb_(5.5)Nb_(12)P6S_(60) 9
1. Abstract 9
2. Introduction 10
3. Experimental 11
ㆍ Synthesis 11
ㆍ Crystallographic studies 11
4. Results and Discussions 13
5. Tables 14
6. Figures 36
Ⅱ. Synthesis and Crystal Structure of the pentanary thiophosphate K0._(35)Cu0._(5)Nb₂PS_(10) 39
1. Abstract 39
2. Introduction 40
3. Experimental 41
ㆍ Synthesis 41
ㆍ Crystallographic studies 41
4. Results and Discussions 43
5. Tables 45
6. Figures 50
Ⅲ. Synthesis and Crystal Structure of the pentanary thiophosphate Rb0._(50)Cu0._(50)Nb₂PS_(10) 52
1. Abstract 52
2. Introduction 53
3. Experimental 54
ㆍ Synthesis 54
ㆍ Crystallographic studies 54
4. Results and Discussions 56
5. Tables 58
6. Figures 63
