Reaction of Laser-Ablated Uranium and Thorium Atoms with H2Se: A Rare Example of Selenium Multiple Bonding

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• 作者：Thomas Vent-Schmidt ; Lester Andrews ; K. Sahan Thanthiriwatte ; David A. Dixon ; Sebastian Riedel
• 刊名：Inorganic Chemistry
• 出版年：2015
• 出版时间：October 19, 2015
• 年：2015
• 卷：54
• 期：20
• 页码：9761-9769
• 全文大小：411K
• ISSN：1520-510X

文摘

The compounds H₂ThSe and H₂USe were synthesized by the reaction of laser-ablated actinide metal atoms with H₂Se under cryogenic conditions following the procedures used to synthesize H₂AnX (An = Th, U; X = O, S). The molecules were characterized by infrared spectra in an argon matrix with the aid of deuterium substitution and electronic structure calculations at the density functional theory level. The main products, H₂ThSe and H₂USe, are shown to have a highly polarized actinide鈥搒elenium triple bond, as found for H₂AnS on the basis of electronic structure calculations. There is an even larger back-bonding of the Se with the An than found for the corresponding sulfur compounds. These molecules are of special interest as rare examples of multiple bonding of selenium to a metal, particularly an actinide metal.