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An ab initio study of the mono- and difluorides of krypton

机译:从头开始研究k的一氟化物和二氟化物

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Results from ab initio calculations at the CCSD(T) level of theory are presented for krypton monofluoride (KrF), krypton monofluoride cation (KrF+), linear, ground-state krypton difluoride (KrF2), the triplet state of krypton difluoride, and the krypton-fluorine van der Waals complex (Kr-F-2). These are the first calculations demonstrating that KrF is a bound molecule, in agreement with experimental observation. When corrected for basis-set superposition error, the calculated potential displays quantitative agreement with the attractive wall of the experimentally measured potential curve. Results are also presented for KrF+ and linear KrF2 which yield accurate values for their dissociation energies, The tripler state of KrF2 is found to have a minimum energy below that of separated atoms, and its structure is bent, with a small F-Kr-F bond angle (71 deg). The van der Waals complex, Kr-F-2, appears to consist of an unperturbed F-2 molecule attached to a krypton atom in the expected T-shaped structure. (C) 1998 American Institute of Physics. [S0021-9606(98)30448-1]. [References: 39]
机译:从理论上从CCSD(T)的头算计算得出的结果包括一氟化k(KrF),一氟化k阳离子(KrF +),线性,基态二氟化k(KrF2),三氟化state的三重态和fluor氟范德华复合物(Kr-F-2)。这些是与实验观察一致的证明KrF是结合分子的第一批计算。当校正了基数叠加误差时,计算出的电势与实验测量的电势曲线的吸引壁显示出定量的一致性。还给出了KrF +和线性KrF2的结果,它们给出了其解离能的准确值。发现KrF2的三重态具有低于分离原子的最小能量,并且其结构弯曲,F-Kr-F小键角(71度)。范德华复合物Kr-F-2似乎由未受干扰的F-2分子组成,该分子在预期的T形结构中与a原子相连。 (C)1998美国物理研究所。 [S0021-9606(98)30448-1]。 [参考:39]

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