Threshold collision-induced dissociation of anionic copper clusters and copper cluster monocarbonyls
Threshold collision-induced dissociation of anionic copper clusters and copper cluster monocarbonyls
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DOI：
10.1063/1.480736
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发表时间：
2000-01
影响因子：
4.4
通讯作者：
V. Spasov;T. Lee;K. Ervin
中科院分区：
文献类型：
--
作者：
V. Spasov;T. Lee;K. Ervin
用阈值碰撞诱导解离方法研究了小分子铜团簇（Cun−，n=2-8）及其单羰基（CunCO−，n=3-7）的碎裂模式，并测量了解离能.对于裸团簇，主要的反应通道是失去一个原子和失去一个二聚体。对于铜簇单羰基化合物，主要通道是CO的损失。从裸铜簇阴离子中损失一个原子的解离能D 0（Cun−1−-Cu）显示出奇偶交替。具有最高解离能Cu 7 −和最高羰基脱附能Cu 5CO −的物种有8个价电子，这与jeldom模型中的闭合壳层一致。键能与理论模型进行了比较。
The threshold collision-induced dissociation method is applied to study the fragmentation patterns and to measure the dissociation energies of small anionic copper clusters (Cun−, n=2–8) and their monocarbonyls (CunCO−, n=3–7). For the bare clusters, the main reaction channels are loss of an atom and loss of a dimer. For the copper cluster monocarbonyls, the main channel is loss of CO. Dissociation energies for the loss of an atom from bare copper cluster anions, D0(Cun−1−–Cu), show even–odd alternation. The species with the highest dissociation energy, Cu7−, and the highest carbonyl desorption energy, Cu5CO−, have eight valence electrons, consistent with closed shells in the jellium model. Bond energies are compared with theoretical models.