Vibrational predissociation spectroscopy of the H2-tagged mono- and dicarboxylate anions of dodecanedioic acid
Vibrational predissociation spectroscopy of the H2-tagged mono- and dicarboxylate anions of dodecanedioic acid
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DOI：
10.1016/j.ijms.2010.10.021
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发表时间：
2011-03-01
影响因子：
1.8
通讯作者：
Johnson, Mark A.
中科院分区：
文献类型：
--
作者：
Kamrath, Michael Z.;Relph, Rachael A.;Johnson, Mark A.
HOOC(CH2)(10)CoO-和-OOC(CH2)(10)CoO-阴离子的振动预解离光谱是通过弱结合H-2分子的预解离进行的。HOOC(CH2)(10)CoO-(H-2)(2)和-OOC(CH2)(10)CoO-(H-2)(10)团簇离子是通过H-2与电喷雾产生的裸离子在离子陷阱中用闭合循环氦低温装置冷却到20K以下而形成的。光碎裂行为表明，H-2结合能约为600 cm(-1)，其强度与Ar标记离子的强度相似。光谱表明，该单阴离子通过形成不对称的内阴离子氢键而形成环状结构。(C)2010爱思唯尔B.V.保留所有权利。
Vibrational predissociation spectroscopy of the HOOC(CH2)(10)COO- and -OOC(CH2)(10)COO- anions is carried out by predissociation of weakly bound H-2 molecules. The HOOC(CH2)(10)COO- (H-2)(2) and -OOC(CH2)(10)COO- (H-2)(10) cluster ions are formed by H-2 attachment to the electrospray-generated bare ions in an ion trap cooled to below 20 K using a closed cycle helium cryostat. The photofragmentation behavior indicates that the H-2 binding energy is about 600 cm(-1), which is similar in strength to that found in Ar-tagged ions. The spectra indicate that the monoanion adopts a cyclic structure through the formation of an asymmetrical, internal anionic H-bond. (C) 2010 Elsevier B.V. All rights reserved.