Formation and Photodissociation of Chromium/Phosphorus Binary Clusters

Abstract

Abstract: Chromium/Phosphorus binary clusters were produced by direct laser ablation and analyzed by tandem time-of-flight mass spectrometer. The main clusters formed were rich in phosphorus. There is an oscillation in CrP_m⁺ series(the peaks with even m are stronger than those with odd m, especially the peaks of CrP₄⁺ and CrP₈⁺ are the strongest) and this may be ascribed to the specific stability of P₄ structure. There are some strong peaks such as Cr₃P₈⁺, Cr₄P₉⁺, Cr₅P₁₁⁺, Cr₆P₁₂⁺, Cr₈P₁₄⁺, etc., which don't change with the change of the ratios of Cr to Pin the samples, and their stability could be explained with an electron model of valence electrons filling the d orbitals of Cr. The results of photodissociation just accord with the model.

Key words: Chromium/Phosphorus clusters, Laser ablation, Laser photodissociation

CLC Number:

O657.6

TrendMD:

HAN Chun-Ying, XING Xiao-Peng, GAO Zhen, ZHU Qi-He . Formation and Photodissociation of Chromium/Phosphorus Binary Clusters[J]. Chem. J. Chinese Universities, 2001, 22(4): 622.

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Formation and Photodissociation of Chromium/Phosphorus Binary Clusters

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