二硫代亚铬酸钾

二硫代亚铬酸钾
别名	硫化铬钾
识别
CAS号	12168-13-7 ^Y
性质
化学式	KCrS₂
摩尔质量	155.22 g·mol⁻¹
相关物质
其他阴离子	亚铬酸钾二硒代亚铬酸钾
其他阳离子	二硫代亚铬酸钠
若非注明，所有数据均出自标准状态（25 ℃，100 kPa）下。

二硫代亚铬酸钾是一种无机化合物，化学式为KCrS₂。

制备及性质

它可由碳酸钾、三氧化二铬在硫化氢气氛中加热反应得到：

{\mathsf {K_{2}CO_{3}+Cr_{2}O_{3}+4H_{2}S\ {\xrightarrow {800-900^{o}C}}\ 2KCrS_{2}+CO_{2}+4H_{2}O}}

在800~900 °C加热铬、硫和碳酸钾的混合物^[1]，或者重铬酸钾在氢气-硫化氢气氛中于600 °C还原，都能得到KCrS₂。^[2]

它是四方晶系的晶体，空间群R3m，晶胞参数a=0.3618 nm, c=2.116 nm。它是极易潮解的铁磁性物质，居里点112 K。^[3]^[2]

参考文献

^ Nirmalesh Naveen, Woon Bae Park, Satendra Pal Singh, Su Cheol Han, Docheon Ahn, Kee-Sun Sohn, Myoungho Pyo. KCrS₂ Cathode with Considerable Cyclability and High Rate Performance: The First K+ Stoichiometric Layered Compound for Potassium-Ion Batteries. Small. 2018, 14 (49): 1803495 [2019-02-05]. ISSN 1613-6829. doi:10.1002/smll.201803495. （原始内容存档于2020-02-03）（英语）.
^ ^2.0 ^2.1 B. Van Laar, F. M. R. Engelsman. The magnetic structure of KCrS₂. Journal of Solid State Chemistry. 1973-03-01, 6 (3): 384–386 [2019-02-05]. ISSN 0022-4596. doi:10.1016/0022-4596(73)90227-2. （原始内容存档于2020-02-03）.
^ Справочник химика 1 2-е изд., испр. М.-Л.: Химия. Редкол.: Никольский Б.П. и др. 1966 （俄语）.

拓展阅读

A. V. Ushakov, D. A. Kukusta, A. N. Yaresko, D. I. Khomskii. Magnetism of layered chromium sulfides $M$ CrS ${}_{2}$ ( $M=\mathrm {Li}$ , Na, K, Ag, and Au): A first-principles study. Physical Review B. 2013-01-14, 87 (1): 014418 [2019-02-05]. doi:10.1103/PhysRevB.87.014418.

查论编钾化合物
稀有氣體、IA、IIA	KH KNa K₄XeO₆
硼族、碳族	KBO₂ KBF₄ KBH₄ K[BHC₉H₉N₆] K[BHC₁₅H₂₁N₆] K₂Al₂B₂O₇（英语：Potassium aluminium borate） KAlO₂ KC₈ KC₂₄ KCH₃ K₂CO₃ KHCO₃ KSiH₃ K₂SiO₃ K₂SiF₆ K₂GeF₆
氮族	K₃N KN₃ KNH₂ K[N(SiMe₃)₂] KNO₂ KNO₃ K₃P K₂HPO₃（俄语：Фосфит калия） KH₂PO₃ K₃PO₄ K₂HPO₄ KH₂PO₄ KPF₆ K₃PS₄ K₃PSe₄ K₃As KAsO₂ KH₂AsO₄ K₃Sb
氧族	K₂O KOH K₂O₂ KO₂ KO₃ KHS KHSO₃ KHSO₄ K₂S K₂SO₃ K₂SO₄ K₂SO₅ K₂S₂O₃ K₂S₂O₅ K₂S₂O₇ K₂S₂O₈ K₂SeO₃ K₂SeO₄ K 2Te K 2TeO 3 K 2TeO 4
卤素、拟卤素	KF KHF₂ KCl KClO KClO₂ KClO₃ KClO₄ KBr KBrO₃ KI KIO₃ KH(IO₃)₂ KIO₄ KCN KOCN KCNO KSCN KSeCN
副族金属	K₂ZrF₆ KCrS₂ KCrSe₂ K₂CrO₄ K₃Cr(O₂)₄ K₂Cr₂O₇ K₃[Cr(CN)₆] K₂FeO₄ K₄[Fe(CN)₆] K₃[Fe(CN)₆] K₃[Co(CN)₆] K₂[Ni(CN)₄] K₃[Ni(CN)₄] K₄[Ni(CN)₄] K₄[Ni₂(CN)₆] K₂MnO₄ KMnO₄ K₂FeO₄ K₃CuF₆ K₄Mo₂Cl₈ K₂PtCl₄ K₂PtCl₆ K[Ag(CN)₂] K₂Re₂Cl₈ K₂[PdCl₄] K₂[PdCl₆]
有机酸盐	KHCO₂ K₂Sb₂(C₄H₂O₆)₂ KC₂H₃O₂ KC₂F₃O₂ KC₂Cl₃O₂ KC₂F₂BrO₂ KC₃H₅O₂ KC₄H₇O₂ KC₇H₅O₂ K₂C₂O₄ KHC₂O₄ K₃[Fe(C₂O₄)₃]

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