Barium iodide
| 200px | |
| Names | |
|---|---|
| IUPAC name
Barium iodide
|
|
| Other names
Barium iodide, anhydrous
|
|
| Identifiers | |
13718-50-8 (anhydrous)  7787-33-9 (dihydrate)  13477-15-1 (hexahydrate) |
|
| ChemSpider | 75507 |
| EC Number | 237-276-9 |
| Jmol 3D model | Interactive image |
| PubChem | 83684 |
|
|
|
|
| Properties | |
| BaI2 (anhydrous) BaI2·2H2O (dihydrate) |
|
| Molar mass | 391.136 g/mol (anhydrous) 427.167 g/mol (dihydrate) |
| Appearance | White orthorhombic crystals (anhydrous) colorless crystals (dihydrate) |
| Odor | odorless |
| Density | 5.15 g/cm3 (anhydrous) 4.916 g/cm3 (dihydrate) |
| Melting point | 711 °C (1,312 °F; 984 K) (anhydrous) decomposes at 740 °C (dihydrate) |
| 166.7 g/100 mL (0 °C) 221 g/100 mL (20 °C) 246.6 g/100 mL (70 °C) |
|
| Solubility | soluble in ethanol, acetone |
| Structure | |
| Orthorhombic, oP12, SpaceGroup = Pnma, No. 62 | |
| Thermochemistry | |
|
Std enthalpy of
formation (ΔfH |
-602.1 kJ·mol−1 |
| Vapor pressure | {{{value}}} |
| Related compounds | |
|
Other anions
|
barium fluoride barium chloride barium bromide |
|
Other cations
|
beryllium iodide magnesium iodide calcium iodide strontium iodide |
|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|
|
 verify (what is ?) |
|
| Infobox references | |
Barium iodide is an inorganic compound with the formula BaI2. The compound exists as an anhydrous and a hydrate (BaI2(H2O)2), both of which are white solids. When heated, hydrated barium iodide converts to the anhydrous salt. The hydrated form is freely soluble in water, ethanol, and acetone.
Contents
Structure
The structure of the anhydrous form resembles that of lead(II) chloride with each Ba center bound to nine iodide ligands[2] and has a crystalline packing structure that is quite similar to BaCl2.[3]
Reactions
Anhydrous BaI2 can be prepared by treating Ba metal with 1,2-diiodoethane in ether.[4]
BaI2 reacts with alkyl potassium compounds to form organobarium compounds.[5]
BaI2 can be reduced with lithium biphenyl, to give a highly active form of barium metal.[6]
Safety
Like other soluble salts of barium, barium iodide is toxic.
References
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Wells, A.F. (1984) Structural Inorganic Chemistry, Oxford: Clarendon Press. ISBN 0-19-855370-6.
- ↑ Brackett, E. B.; Brackett, T. E.; Sass, R. L.; The Crystal Structures of Barium Chloride, Barium Bromide, and Barium Iodide. J. Phys. Chem., 1963, volume 67, 2132 – 2135
- ↑ Duval, E.; Zoltobroda, G.; Langlois, Y.; A new preparation of BaI2: application to (Z)-enol ether synthesis. Tetrahedron Letters, 2000, 41, 337-339
- ↑ Walter, M. D.; Wolmershauser, G.; Sitzmann, H.; Calcium, Strontium, Barium, and Ytterbium Complexes with Cyclooctatetraenyl or Cyclononatetraenyl Ligands. J. Am. Chem. Soc., 2005, 127 (49), 17494 – 17503.
- ↑ Yanagisawa, A.; Habaue, S.; Yasue, K.; Yamamoto, H.; Allylbarium Reagents: Unprecedented Regio- and Stereoselective Allylation Reactions of Carbonyl Compounds. J. Am. Chem. Soc.1994, 116,6130-6141
<templatestyles src="Asbox/styles.css"></templatestyles>
 |
This inorganic compound–related article is a stub. You can help Wikipedia by expanding it. |
- Pages with broken file links
- Chemical articles with multiple CAS Registry Numbers
- Articles without EBI source
- Articles without KEGG source
- Articles without UNII source
- Pages using collapsible list with both background and text-align in titlestyle
- Chemical articles using a fixed chemical formula
- Iodides
- Barium compounds
- Metal halides
- Inorganic compound stubs
