四硫化三铁
化合物
四硫化三铁是蓝黑色（有时是粉红色[来源请求]）铁和硫的化合物，化学式为Fe3S4或FeS·Fe2S3，与四氧化三铁类似。自然界中存在于硫矿物胶黄铁矿，具有顺磁性。它是一种由趋磁细菌制造的生物矿。它是一种混合价态化合物，Fe2+与Fe3+的比例为1:2。
| 四硫化三铁 | |
|---|---|
| 别名 | 黑色硫化铁，胶黄铁矿 |
| 性质 | |
| 化学式 | FeS·Fe2S3 |
| 摩尔质量 | 295.805 g·mol⁻¹ |
| 外观 | 蓝黑色或粉红色 |
| 密度 | 4.049 g/cm3 |
| 若非注明，所有数据均出自标准状态（25 ℃，100 kPa）下。 | |
晶体结构
立方晶胞，空间群Fd3m。硫阴离子形成立方密堆积晶格，而铁阳离子占据四面体和八面体的顶点位置。[1][2]
沿[110]方向上投影的四硫化三铁晶体结构
-
SFe4四面体 -
FeS4四面体 -
FeS6八面体
电磁性质
和与此相关的氧化物磁铁矿（Fe3O4）类似，四硫化三铁有亚铁磁性，其中占据八面体顶点与占据四面体顶点位置的铁离子自旋磁矩取向方向相反，结果产生了净磁化强度。这两个金属位置有高自旋量子数。胶黄铁矿有半金属的电子结构。[3][4]
参考
- ^ Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W. and Nichols, Monte C. (编). Greigite. Handbook of Mineralogy (PDF). I (Elements, Sulfides, Sulfosalts). Chantilly, VA, US: Mineralogical Society of America. 1990 [December 5, 2011]. ISBN 0962209708. （原始内容存档 (PDF)于2012-02-04）.
- ^ Vaughan, D. J.; Craig, J. R. “Mineral Chemistry of Metal Sulfides" Cambridge University Press, Cambridge: 1978. ISBN 0-521-21489-0.
- ^ Devey, Anthony; R. Grau-Crespo and N.H. de Leeuw. Electronic and magnetic structure of Fe3S4: GGA+U investigation. Physical Review B. 2009, 79 (19): 195126. Bibcode:2009PhRvB..79s5126D. doi:10.1103/PhysRevB.79.195126.
- ^ Wang, Jun; Cao, Shi-He; Wu, Wei; Zhao, Guo-Meng. The Curie temperature and magnetic exchange energy in half-metallic greigite Fe3S4. Physica Scripta. 2011, 83 (4): 045702. Bibcode:2011PhyS...83d5702W. doi:10.1088/0031-8949/83/04/045702.
扩展阅读
- Mann, Stephen; Sparks, Nicholas H. C.; Frankel, Richard B.; Bazylinski, Dennis A.; Jannasch, Holger W. Biomineralization of ferrimagnetic greigite (Fe3S4) and iron pyrite (FeS2) in a magnetotactic bacterium. Nature. 1990, 343 (6255): 258. Bibcode:1990Natur.343..258M. doi:10.1038/343258a0.
- Roberts, A. Magnetic properties of sedimentary greigite (Fe3S4). Earth and Planetary Science Letters. 1995, 134: 227. Bibcode:1995E&PSL.134..227R. doi:10.1016/0012-821X(95)00131-U.
- Heywood, B. R.; Bazylinski, D. A.; Garratt-Reed, A.; Mann, S.; Frankel, R. B. Controlled biosynthesis of greigite (Fe3S4) in magnetotactic bacteria. Naturwissenschaften. 1990, 77: 536. Bibcode:1990NW.....77..536H. doi:10.1007/BF01139266.
- Reynolds, R. L.; Tuttle, M. L.; Rice, C. A.; Fishman, N. S.; Karachewski, J. A.; Sherman, D. M. Magnetization and geochemistry of greigite-bearing Cretaceous strata, North Slope basin, Alaska. American Journal of Science. 1994, 294: 485. doi:10.2475/ajs.294.4.485.
- Snowball, Ian; Thompson, Roy. The occurrence of Greigite in sediments from Loch Lomond. Journal of Quaternary Science. 1988, 3: 121. Bibcode:1988JQS.....3..121S. doi:10.1002/jqs.3390030203.
- Stanjek, H.; Fassbinder, J. W. E.; Vali, H.; Wagele, H.; Graf, W. Evidence of biogenic greigite (ferrimagnetic Fe3S4) in soil. European Journal of Soil Science. 1994, 45: 97. doi:10.1111/j.1365-2389.1994.tb00490.x.
- Hoffmann, V. Greigite (Fe3S4): magnetic properties and first domain observations. Physics of the Earth and Planetary Interiors. 1992, 70: 288. Bibcode:1992PEPI...70..288H. doi:10.1016/0031-9201(92)90195-2.
- Fassbinder, Jörg W. E.; Stanjek, Helge. Magnetic properties of biogenic soil greigite (Fe3S4). Geophysical Research Letters. 1994, 21: 2349. Bibcode:1994GeoRL..21.2349F. doi:10.1029/94GL02506.