Collision complex formation in the reaction of C+ with H2O
Collision complex formation in the reaction of C+ with H2O
复制标题
C与H2O反应形成碰撞络合物
DOI：
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发表时间：
1985
期刊：
影响因子：
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通讯作者：
J. M. Farrar
中科院分区：
文献类型：
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作者：
D. Sonnenfroh;R. Curtis;J. M. Farrar
在0.62和2.14 eV的碰撞能量的标题反应的交叉束研究表明，质量29离子的生产，无论是HCO+或COH+，发生通过形成一个短暂的中间体HCOH+复合物的生活在较低的碰撞能量约一个旋转周期。相对能量为0.62 eV时角分布的不对称性表明，瞬态中间体的寿命为10−13 s。在两种碰撞能量下的动能分布的宽度与更稳定的甲酰基HCO+异构体的显著部分（约20%-30%）的产生一致。这些观察结果表明在较低能量下形成羟基卡宾阳离子插入络合物，其可通过C-H裂解形成异甲酰基阳离子COH+或通过O-H键裂解形成更稳定的甲酰基阳离子HCO+而衰减。在较高的碰撞能量下，质量29的产物中有一小部分被限制为HCO+。这种观察和产物通量的形式...
A crossed beam study of the title reaction at collision energies of 0.62 and 2.14 eV demonstrates that the production of mass 29 ions, either HCO+ or COH+, occurs through the formation of a transient intermediate HCOH+ complex which lives approximately one rotational period at the lower collision energy. The asymmetry of the angular distribution at a relative energy of 0.62 eV indicates that the lifetime of the transient intermediate is ∼10−13 s. The widths of the kinetic energy distributions at both collision energies are consistent with production of a significant fraction (≳20%–30%) of the more stable formyl HCO+ isomer. These observations suggest the formation of a hydroxycarbene cation insertion complex at the lower energy which may decay by C–H cleavage to form isoformyl cation COH+ or by O–H bond cleavage to form the more stable formyl cation HCO+. At the higher collision energy, a smaller fraction of the mass 29 products are constrained to be HCO+. This observation and the form of the product flux...