Copper (I) thiocyanate
Crystal structure | ||||||||||||||||
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General | ||||||||||||||||
Surname | Copper (I) thiocyanate | |||||||||||||||
other names |
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Ratio formula | CuSCN | |||||||||||||||
Brief description |
whitish odorless solid |
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properties | ||||||||||||||||
Molar mass | 121.62 g mol −1 | |||||||||||||||
Physical state |
firmly |
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density |
2.84 g cm −3 |
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solubility |
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safety instructions | ||||||||||||||||
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As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Copper (I) thiocyanate is an inorganic chemical compound of copper from the group of thiocyanates .
Extraction and presentation
Copper (I) thiocyanate can be obtained by reacting copper sulfate , copper powder and potassium thiocyanate at 70 ° C in eutectic solvents (DES).
The compound can also be obtained by reacting alkali metal thiocyanates with copper (I) chloride at 80-90 ° C. or with copper (II) sulfate solutions in the presence of sulfites .
properties
Copper (I) thiocyanate is a whitish odorless solid that is practically insoluble in water. It decomposes when heated above 1084 ° C. It has an orthorhombic crystal structure with the space group Pbca (space group no. 61) . However, another modification is also known. The compound is a semiconductor with a band gap of around 3.6 eV.
use
Copper (I) thiocyanate is used as a flame retardant . It is a good inorganic pigment and is used as an antifouling paint to protect the underwater surfaces of ships. It is also used for the production of industrial chemicals, pharmaceuticals and other chemicals.
Individual evidence
- ↑ a b c d e f g Entry on copper thiocyanate in the GESTIS substance database of the IFA , accessed on August 11, 2018(JavaScript required) .
- ↑ a b c data sheet Copper (I) thiocyanate, 96% min from AlfaAesar, accessed on August 11, 2018 ( PDF )(JavaScript required) .
- ↑ Entry on copper (I) thiocyanate in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on August 31, 2018. Manufacturers or distributors can expand the harmonized classification and labeling .
- ↑ Shiqi Lv, Lin Sui, Ying Zeng, Yun Cheng, Chunsheng Liu, Genxiang Luo: Synthesis of CuSCN particles in deep eutectic solvents and its application in the thermal decomposition of ammonium perchlorate. In: Particulate Science and Technology. 34, 2015, p. 407, doi : 10.1080 / 02726351.2015.1068897 .
- ^ H. Wayne Richardson: Handbook of Copper Compounds and Applications . CRC Press, 1997, ISBN 978-0-8247-8998-5 , pp. 86 ( limited preview in Google Book search).
- ↑ Kabešová, M & Dunaj-jurčo, M & Serator, M & Gažo, J & Garaj, J. (1976). The crystal structure of copper (I) thiocyanate and its relation to the crystal structure of copper (II) diammine dithiocyanate complex. Inorganica Chimica Acta. 17. 161-165. doi : 10.1016 / S0020-1693 (00) 81976-3 .
- ↑ Wijeyasinghe, Nilushi & Anthopoulos, Thomas. (2015). TOPICAL REVIEW: Copper (I) thiocyanate (CuSCN) as a hole-transport material for large-area opto / electronics. Semiconductor Science and Technology. 30. doi : 10.1088 / 0268-1242 / 30/10/104002 .
- ↑ Blessing N. Ezealigo, Assumpta C. Nwanya, Aline Simo, R. Bucher, Rose U. Osuji, Malik Maaza, MV Reddy, Fabian I. Ezema: A study on solution deposited CuSCN thin films: Structural, electrochemical, optical properties. In: Arabian Journal of Chemistry. 2017, doi : 10.1016 / j.arabjc.2017.04.013 .