Selective bond scission in formic acid by low-energy electrons
Selective bond scission in formic acid by low-energy electrons
复制标题
低能电子在甲酸中的选择性断键
DOI:
10.1088/1742-6596/1412/5/052004
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Slaughter, Daniel S
中科院分区:
文献类型:
--
作者:
Griffin, Brandon;Moradmand, Ali;Williams, Joshua;Belkacem, Ali;Rescigno, Thomas N;Trevisan, Cynthia;McCurdy, C William;Weber, Thorsten;Slaughter, Daniel S
We report recent results of mass-resolved anion fragment momentum imaging experiments to investigate dissociative electron attachment to formic acid, for incident energies between 5 eV and 9 eV. A remarkable site-selectivity is found for a resonance at 8.5 eV by comparing anion fragment yields for two deuterated isotopologues of formic acid. This results in an H− fragment from the OH bond of the transient anion, with negligible contribution from CH break. In contrast, a lower-energy resonance at 7.1 eV dissociates by C–H or O–H break to produce H− and the neutral radicals HOCO or HCOO.
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