The study of rhenium pentacarbonyl complexes using single-atom chemistry in the gas phase. Issue 13 (19th March 2019)

• Record Type: Journal Article
• Authors: Wang, Yang; Cao, Shiwei; Zhang, Jicai; Fan, Fangli; Yang, Jie; Haba, Hiromitsu; Komori, Yukiko; Yokokita, Takuya; Morimoto, Kouji; Kaji, Daiya; Wittwer, Yves; Eichler, Robert; Türler, Andreas; Qin, Zhi
• Is Part Of: Physical chemistry chemical physics. Volume 21:Issue 13(2019)
• Page Start: 7147
• Page End: 7154
• Publication Date: 2019-03-19
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/c8cp07844k
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : Two experiments prove Re pentacarbonyl could exist stably in the gas phase at the single-atom level. Abstract : A gas-phase chemical study of rhenium carbonyls was carried out using short-lived radioisotopes produced at a heavy-ion accelerator. The Re isotopes produced in the nuclear reactions of nat Gd( 23 Na, x n) 172–177 Re were pre-separated with a gas-filled recoil ion separator and their carbonyls were synthesized in a mixture of inert gas and carbon monoxide. Using a low temperature isothermal chromatography apparatus, the adsorption enthalpies of Re carbonyls were derived to be Δ H ads = −42 ± 2 kJ mol −1 on a Teflon® surface by fitting the external chromatograms with a Monte Carlo simulation program. A chemical yield of 25% relative to that of the transport yield for Re by a He/KCl gas-jet was achieved. The laser-ablation time-of-flight mass-spectrometric technique was employed to identify the species of Re carbonyls produced in the gas phase. The most stable species was deduced to be Re(CO)5 based on the mass-spectrometric analysis as well as quantum chemistry calculations.