New Strontium Polysulfides, SrS3, and Sr2(OH)2S4·10H2O, Obtained by the High-pressure Treatment of a Sr-S Mixture
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- 作者：Hiroshi Fukuoka ; Rimiko Suga ; Kenji Komaguchi ; Shoji Yamanaka ; and Masaru Shiotani
- 刊名：Inorganic Chemistry
- 出版年：2004
- 出版时间：September 6, 2004
- 年：2004
- 卷：43
- 期：18
- 页码：5780 - 5784
- 全文大小：108K
- 年卷期：v.43,no.18(September 6, 2004)
- ISSN：1520-510X
文摘
A new polymorph of SrS3 was obtained by a reaction of SrS and S with an atomic ratio of Sr:S = 1:5 under apressure of 5 GPa at 1200 
C. It crystallized in a tetragonal unit cell with a = 6.708(1) Å, c = 3.942(1) Å, andV = 177.36(6) Å3. It was isotypic with BaS3, and contained S32- polysulfide ions. The product obtained from thehigh-pressure synthesis contained an amorphous component. It was highly deliquescent and formed a yellowishsolution. A new layered polysulfide, Sr2(OH)2S4·10H2O, crystallized in the solution. The sulfide belonged to a triclinicspace group of P
(No. 2) with lattice constants of a = 5.9107(5) Å, b = 7.8682(6) Å, c = 9.4134(6) Å, 
=75.639(6), 
= 73.824(3), 
= 71.639(3), V = 392.83(5) Å3, and Z = 1. Each Sr ion was coordinated with oneOH ligand and eight H2O ligands. Six H2O ligands out of the eight were bridging ligands to form two-dimensional[Sr2(OH)2(H2O)102+]
cationic layers, between which S42- tetrapolysulfide ions were situated. The S42- anion hada coplanar configuration with a dihedral angle of 180.0. The stability of S42- anions having different conformationswas discussed from a viewpoint of ab initio MO calculations on changing the dihedral angles of S42-.
C. It crystallized in a tetragonal unit cell with a = 6.708(1) Å, c = 3.942(1) Å, andV = 177.36(6) Å3. It was isotypic with BaS3, and contained S32- polysulfide ions. The product obtained from thehigh-pressure synthesis contained an amorphous component. It was highly deliquescent and formed a yellowishsolution. A new layered polysulfide, Sr2(OH)2S4·10H2O, crystallized in the solution. The sulfide belonged to a triclinicspace group of P (No. 2) with lattice constants of a = 5.9107(5) Å, b = 7.8682(6) Å, c = 9.4134(6) Å, =75.639(6), = 73.824(3), = 71.639(3), V = 392.83(5) Å3, and Z = 1. Each Sr ion was coordinated with oneOH ligand and eight H2O ligands. Six H2O ligands out of the eight were bridging ligands to form two-dimensional[Sr2(OH)2(H2O)102+] cationic layers, between which S42- tetrapolysulfide ions were situated. The S42- anion hada coplanar configuration with a dihedral angle of 180.0. The stability of S42- anions having different conformationswas discussed from a viewpoint of ab initio MO calculations on changing the dihedral angles of S42-.