User:Graeme Bartlett/arsenide carbide
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.