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二硫化铌

二硫化铌
IUPAC名
niobium(IV) sulfde, niobium disulfde
识别
CAS号 12136-97-9  checkY
PubChem 11805338
ChemSpider 9980003
SMILES
 
  • S=[Nb]=S
InChI
 
  • 1S/Nb.2S
性质
化学式 NbS2
摩尔质量 157.038 g/mol[1] g·mol⁻¹
外观 黑色晶体[1]
密度 4.4 g/cm3[1]
磁化率 +120·10−6 cm3/mol[2]
结构[3]
晶体结构 Trigonal, hR9, No. 160
空间群 R3m
晶格常数 a = 0.333 nm, b = 0.333 nm, c = 1.78 nm
晶格常数 α = 90°, β = 90°, γ = 120°
相关物质
其他阴离子 二硒化铌, 二碲化铌
其他阳离子 二硫化钒, 二硫化钽
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

二硫化铌 是一种无机化合物化学式 NbS2。 它是黑色的层状固体,与其他的过渡金属二氧族元素化物单分子层英语Transition metal dichalcogenide monolayers相比,它可以剥落成超薄的灰色片状层。这些层表现出超导性,其中的转变温度从大约是 2至6 K。层的厚度是 6至12 nm,然后随着厚度增​​加而饱和。 [4]

参考资料

[编辑]
  1. ^ 1.0 1.1 1.2 Lide, D. R. (编), CRC Handbook of Chemistry and Physics 86th, Boca Raton (FL): CRC Press: 4.76, 2005, ISBN 0-8493-0486-5 
  2. ^ Lee, P.A. Optical and Electrical Properties. Springer Science & Business Media. 6 December 2012: 446. ISBN 978-94-010-1478-6. 
  3. ^ Rajora, O. S.; Curzon, A. E. The preparation and X‐ray diffraction study of the layer materials NbSxSe2-x for 0 ≦ x ≦ 2. Physica Status Solidi A. 1987, 99: 65–72. doi:10.1002/pssa.2210990108. 
  4. ^ Yan, Rusen; Khalsa, Guru; Schaefer, Brian T.; Jarjour, Alexander; Rouvimov, Sergei; Nowack, Katja C.; Xing, Huili G.; Jena, Debdeep. Evolution of superconductivity in ultrathin NbS2. Applied Physics Express. 2019, 12 (2): 023008. arXiv:1803.06097可免费查阅. doi:10.7567/1882-0786/aaff89. 
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二硫化铌
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