Difference between revisions of "Promethium(III) iodide"
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| StdInChI=1S/3BrH.Pm/h3*1H;/q;;;+3/p-3 | | StdInChI=1S/3BrH.Pm/h3*1H;/q;;;+3/p-3 | ||
| StdInChIKey = GWRKFHUNEGTAQB-UHFFFAOYSA-K | | StdInChIKey = GWRKFHUNEGTAQB-UHFFFAOYSA-K | ||
| − | | CASNo = | + | | CASNo = 13818-73-0 |
}} | }} | ||
| Section2 = {{Chembox Properties | | Section2 = {{Chembox Properties | ||
| Reference = <ref name="Cotton">{{citation | first = Simon | last = Cotton | title = Lanthanide and Actinide Chemistry | edition = 2nd | publisher = Wiley | location = New York | year = 2006 | isbn = 0470010061 | pages = 115–17}}.</ref><ref name="struct">{{citation | first1 = W. R. | last1 = Wilmarth | first2 = R. G. | last2 = Haire | first3 = J. P. | last3 = Young | first4 = D. W. | last4 = Ramey | first5 = J. R. | last5 = Peterson | title = Absorption spectrophotometric and X-ray diffraction studies of the trihalides of promethium in the solid state | journal = J. Less Common Met. | volume = 141 | issue = 2 | year = 1988 | pages = 275–84 | doi = 10.1016/0022-5088(88)90413-4}}.</ref> | | Reference = <ref name="Cotton">{{citation | first = Simon | last = Cotton | title = Lanthanide and Actinide Chemistry | edition = 2nd | publisher = Wiley | location = New York | year = 2006 | isbn = 0470010061 | pages = 115–17}}.</ref><ref name="struct">{{citation | first1 = W. R. | last1 = Wilmarth | first2 = R. G. | last2 = Haire | first3 = J. P. | last3 = Young | first4 = D. W. | last4 = Ramey | first5 = J. R. | last5 = Peterson | title = Absorption spectrophotometric and X-ray diffraction studies of the trihalides of promethium in the solid state | journal = J. Less Common Met. | volume = 141 | issue = 2 | year = 1988 | pages = 275–84 | doi = 10.1016/0022-5088(88)90413-4}}.</ref> | ||
| Formula = PmI<sub>3</sub> | | Formula = PmI<sub>3</sub> | ||
| − | | MolarMass = 527.63 g mol<sup>−1</sup> | + | | MolarMass = 527.63 g mol<sup>−1</sup> {{#tag:ref|The molar mass is based on [[promethium-147]] (''t''<sub>½</sub> = 2.6234(2) a; ''A''<sub>r</sub> = {{nowrap|146.915 1385(26)}}),<ref name="NUBASE">{{NUBASE 2003}}.</ref> the most commonly encountered isotope of promethium.|group=note}} |
| Appearance = red solid | | Appearance = red solid | ||
| Density = 5.95 g cm<sup>−3</sup> | | Density = 5.95 g cm<sup>−3</sup> | ||
Latest revision as of 09:58, 9 January 2011
| Promethium(III) iodide | |
|---|---|
| Other names | Promethium triiodide |
| Identifiers | |
| Standard InChI | InChI=1S/3BrH.Pm/h3*1H;/q;;;+3/p-3 |
| Standard InChIKey | GWRKFHUNEGTAQB-UHFFFAOYSA-K |
| CAS number | [] |
| Properties[1][2] | |
| Chemical formula | PmI3 |
| Molar mass | 527.63 g mol−1 [note 1] |
| Appearance | red solid |
| Density | 5.95 g cm−3 |
| Melting point |
695 °C |
| Structure[1][2] | |
| Crystal structure | Plutonium tribromide |
| Lattice constant | a = 424(1) pm, b = 1393(7) pm, c = 996(2) pm |
| Coordination geometry | bicapped trigonal prismatic (Pm3+) |
| Structure[1][2] | |
| Crystal structure | Bismuth triiodide |
| Lattice constant | a = 765(3) pm, c = 2110(10) pm |
| Coordination geometry | octahedral (Pm3+) |
| Related compounds | |
| Other anions | Promethium(III) fluoride Promethium(III) chloride Promethium(III) bromide |
| Other cations | Praseodymium(III) iodide Neodymium(III) iodide Samarium(III) iodide Europium(III) iodide |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Promethium(III) iodide, PmI3, is the only known iodide of promethium. It is prepared (on a 100-µg scale) by reacting gaseous hydrogen iodide with promethium(III) oxide at 400 °C.[1] At ambient temperature, it has the plutonium tribromide structure with eight-coordinate promethium, isostructural with NdI3: a high-temperature modification has the bismuth triiodide structure with six-coordinate promethium, isostructural with SmI3.[1][2]
Notes and references
Notes
- ↑ The molar mass is based on promethium-147 (t½ = 2.6234(2) a; Ar = 146.915 1385(26)),[3] the most commonly encountered isotope of promethium.
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Cotton, Simon Lanthanide and Actinide Chemistry, 2nd ed.; Wiley: New York, 2006; pp 115–17. ISBN 0470010061.
- ↑ 2.0 2.1 2.2 2.3 Wilmarth, W. R.; Haire, R. G.; Young, J. P.; Ramey, D. W.; Peterson, J. R. Absorption spectrophotometric and X-ray diffraction studies of the trihalides of promethium in the solid state. J. Less Common Met. 1988, 141 (2), 275–84. DOI: 10.1016/0022-5088(88)90413-4.
- ↑ Audi, G.; Bersillon, O.; Blachot, J.; Wapstra, A. H. The NUBASE evaluation of nuclear and decay properties. Nucl. Phys. A 2003, 729, 3–128. doi:10.1016/j.nuclphysa.2003.11.001, <http://amdc.in2p3.fr/nubase/Nubase2003.pdf>.
Further reading
- Wilmarth, W. R.; Begun, G. M.; Haire, R. G.; Peterson, J. R. Raman spectra of Pm2O3, PmF3, PmCl3, PmBr3 and PmI3. J. Raman Spectrosc. 1988, 19 (4), 271–75. DOI: 10.1002/jrs.1250190410.
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