Arsenide carbides or carbide arsenides are compounds containing anions composed of carbide (C4−) and arsenide (As3−). They can be considered as mixed anion compounds. Related compounds include the arsenide silicides, germanide arsenides, and phosphide carbides.
Some of these compounds are what are called MAX phases, where M is a metal and A and X are main group elements. Ratios can be 2:1:1 or 3:2:1.
Another class is perovskite carbides of the form M3AsC.
The bonds between the metal and arsenic can be classified as metallic, but between the metal and carbon are covalent.
List edit
| formula | system | space group | unit cell Å | volume | density | comment | ref |
|---|---|---|---|---|---|---|---|
| V2AsC | hexagonal | P63/mmc | a=3.113 c=11.38 Z=2 | [1] | |||
| V3As2C | hexagonal | P63/mmc | a=3.298 c=18.007 Z=2 | 169.7 | 6.8 | [2] | |
| V3AsC | a=3.128 b=10.10.14 c=7.590 | 244.2 | [3] | ||||
| Cr3AsC | a=3.057 b=9.704 c=7.299 | 216.3 | [3] | ||||
| Nb2AsC | hexagonal | P63/mmc | a=3.31 c=11.9 Z=2 | metallic; superconductor Tc = 2K | [4][5] | ||
| Nb3As2C | hexagonal | P63/mmc | a=3.3606 c=18.6951 Z=2 | 182.846 | 8.0 | [2] | |
| triclinic | P1 | ||||||
| monoclinic | P21 |
References edit
- ^ Halilov, S. V.; Singh, D. J.; Papaconstantopoulos, D. A. (2002-04-29). "Soft modes and superconductivity in the layered hexagonal carbides V 2 CAs , Nb 2 CAs , and Nb 2 CS". Physical Review B. 65 (17): 174519. doi:10.1103/PhysRevB.65.174519. ISSN 0163-1829.
- ^ a b Chen, Hongxiang; Yang, Dongliang; Zhang, Qinghua; Jin, Shifeng; Guo, Liwei; Deng, Jun; Li, Xiaodong; Chen, Xiaolong (2019-03-26). "A Series of MAX Phases with MA‐Triangular‐Prism Bilayers and Elastic Properties". Angewandte Chemie. 131 (14): 4624–4628. doi:10.1002/ange.201814128. ISSN 0044-8249.
- ^ a b Boller, H.; Nowotny, H. (March 1968). "Komplexcarbide und-nitride mit aufgefülltem Re3B-Typ". Monatshefte für Chemie - Chemical Monthly (in German). 99 (2): 721–725. doi:10.1007/BF00901227. ISSN 0026-9247.
- ^ Beckmann, O.; Boller, H.; Nowotny, H. (1968). "Neue H-Phasen: Kurze Mitteilung". Monatshefte für Chemie. 99 (4): 1580–1583. doi:10.1007/bf00902709.
- ^ Hadi, M. A.; Ali, M. S.; Naqib, S. H.; Islam, A. K. M. A. (June 2013). "BAND STRUCTURE, HARDNESS, THERMODYNAMIC AND OPTICAL PROPERTIES OF SUPERCONDUCTING Nb 2 AsC , Nb 2 InC AND Mo 2 GaC". International Journal of Computational Materials Science and Engineering. 02 (02): 1350007. doi:10.1142/S2047684113500073. ISSN 2047-6841.