Energetics of the manganese oxide cluster cations Mn(N)O+ (N = 2-5): role of oxygen in the binding of manganese atoms.

Energetics of the manganese oxide cluster cations Mn(N)O+ (N = 2-5): role of oxygen in the binding of manganese atoms.
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氧化锰簇阳离子 Mn(N)O (N = 2-5) 的能量:氧在锰原子结合中的作用。

DOI:
10.1063/1.2196035
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发表时间:
2006
期刊:
The Journal of chemical physics
影响因子:
--
通讯作者:
T. Kondow
T. Kondow
中科院分区:
--
文献类型:
--
作者:
K. Tono;A. Terasaki;T. Ohta;T. Kondow

文献摘要

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在 1.08-2.76 eV 的光子能量范围内研究了锰氧化物簇阳离子 Mn(N)O+ (N = 2-5) 光解离成 Mn(N-1)O+(失去一个原子)和 Mn(N-2)O+(两个原子)的情况。根据一原子和二原子损失的阈值能量,N = 3、4 和 5 的键解离能 D0(Mn(N-1)O+...Mn) 分别确定为 1.84+/-0.03、0.99+/-0.05 和 1.25+/-0.14 eV。由于 Mn2O+ 即使在使用的最高光子能量下也不会解离,因此根据密度泛函理论计算得出 Mn2O+ 的键解离能为 D0(Mn+...MnO),结果为 3.04 eV。目前的研究结果表明,核心离子 Mn2O+ 与 Mn(N)O+ 中的其余锰原子结合较弱。
The photodissociation of manganese oxide cluster cations Mn(N)O+ (N = 2-5), into Mn(N-1)O+ (one-atom loss) and Mn(N-2)O+ (two-atom), was investigated in the photon-energy range of 1.08-2.76 eV. The bond-dissociation energies D0(Mn(N-1)O+...Mn) for N = 3, 4, and 5 were determined to be 1.84+/-0.03, 0.99+/-0.05, and 1.25+/-0.14 eV, respectively, from the threshold energies for the one- and two-atom losses. As Mn2O+ did not dissociate even at the highest photon energy used, the bond dissociation energy of Mn2O+, D0(Mn+...MnO), was obtained from a density-functional-theory calculation to be 3.04 eV. The present findings imply that the core ion Mn2O+ is bound weakly with the rest of the manganese atoms in Mn(N)O+.