Size-selected anion photoelectron spectroscopy and density functional theory study of MnCn-/0 (n = 3-10): Odd-even alternation and linear-cyclic structure competition

The Journal of Chemical Physics
Xi-Ling XuWei-Jun Zheng

Abstract

The structural and electronic properties of MnCn- (n = 3-10) clusters have been investigated using size-selected photoelectron spectroscopy and density functional theory calculations. The vertical detachment energies of MnCn- exhibit a strong odd-even alternation with increasing number of carbon atoms: the vertical detachment energies of MnCn- containing even number of carbon atoms are higher than those of adjacent ones containing odd number of carbon atoms. The theoretical analyses indicate that the spin multiplicities and relative stabilities of MnCn-/0 also exhibit odd-even alternations. It is found that MnC3- has three degenerate isomers with two linear structures in different electronic states and one fanlike structure. For n = 4-6, 8, and 10, the ground state structures are all linear with the Mn atom at one end. MnC7- and MnC9- have cyclic structures. As for the neutral species, MnC3 and MnC4 adopt fan-shaped structures, MnC5 has a linear structure, and MnC6-10 have cyclic configurations. The atomic dipole moment corrected Hirshfeld population analysis shows that the electrons transfer from the Mn atom to the Cn units. The total spin magnetic moments of MnCn-/0 (n = 3-10) clusters are mainly contributed by the local magn...Continue Reading

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Citations

Jul 10, 2021·The Journal of Chemical Physics·Jarrett L MasonCaroline Chick Jarrold
Dec 24, 2021·The Journal of Physical Chemistry Letters·Xuegang LiuHua Xie

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