碘化钡

碘化鋇（英文：Barium iodide）是分子式為BaI₂的無機化合物，為白色固體。分兩種型態，一種是水合物，另一種是無水物，都是白色的固體，无水物可由含水碘化鋇加熱得到。

制备

碘化钡可以由氢碘酸和碳酸钡反应而成：[2]

\mathrm {BaCO_{3}+2\ HI\longrightarrow BaI_{2}\ +H_{2}O+CO_{2}\uparrow }

它也可以由氢氧化钡、碘和还原剂（如磷或亚硫酸）反应而成。[2]

氢化钡和碘化铵在吡啶中反应，也能获得碘化钡：[3]

\mathrm {BaH_{2}+2\ NH_{4}I\longrightarrow BaI_{2}+2\ NH_{3}+2H_{2}}

无水碘化钡的结构类似氯化铅[4] 和 BaCl₂。[5]

无水 BaI₂ 可以由金属钡和1,2-二碘乙烷在乙醚里反应而成。[6]

BaI₂ 会和烷基钾反应，形成有机钡化合物。[7]

BaI₂ 可以被联苯基锂还原，形成高活性的钡金属。[8]

类似其它可溶钡盐，碘化钡有毒。

Lide, David R., 87, Boca Raton, FL: CRC Press: 4–44, 1998, ISBN 0-8493-0594-2
R. Abegg, F. Auerbach: Handbuch der anorganischen Chemie. Bd. 2, Verlag S. Hirzel, 1908. S. 256ff. (Volltext).
Baudler, Marianne. . Stuttgart. 1978: 923. ISBN 978-3-432-87813-3. OCLC 310719490 （德语）.
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

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.