CCCBDB Ionization Energy page 2

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		6-311+G(3df,2p)	daug-cc-pVTZ
hartree fock	HF		8.804
density functional	B97D3	9.160
		6-311+G(3df,2p)	daug-cc-pVTZ

		CEP-31G	CEP-31G*	CEP-121G	CEP-121G*	LANL2DZ	SDD	cc-pVTZ-PP	aug-cc-pVTZ-PP	Def2TZVPP
hartree fock	HF									8.800
density functional	B3LYP									9.492
density functional	PBEPBE									9.129
Moller Plesset perturbation	MP2									9.882

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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Calculated Ionization Energy for C4H10O (1-Butanol)

Calculated Ionization Energy for C₄H₁₀O (1-Butanol)