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66jia66

银虫 (小有名气)

[交流] 【求助】有什么资料或书或文章可参考啊?

用MOLPRO计算时,什么叫活性空间?占距轨道,冻芯轨道?

有什么资料或书或文章可参考啊?

For the AsP (X1Σ+) molecule, the calculations are carried out in C2v symmetry with the order of the irreducible representations as a1/b1/b2/a2.

    Eight MOs are put into active space, including four a1, two b1, two b2, which correspond to the 4s4p shells of the As atom and 3s3p shells of the P atom. The rest of the electrons are put into the closed-shell orbits, that to say, ten a1, four b1, four b2, one a2.


什么意思啊?特别是第2段?
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