CCCBDB Elelctron affinities page 2

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composite	G2	0.735
	G3	0.658
	G3B3	0.639
	G4	0.700
	CBS-Q	0.696

		STO-3G	3-21G	3-21G*	6-31G	6-31G*	6-31G**	6-31+G**	6-311G*	6-311G**	6-31G(2df,p)	6-311+G(3df,2p)	TZVP	cc-pVDZ	cc-pVTZ	cc-pVQZ	aug-cc-pVDZ	aug-cc-pVTZ	aug-cc-pVQZ	cc-pV(T+d)Z	daug-cc-pVTZ
hartree fock	HF	-6.557	-2.280	-2.280	-2.133	-1.955	-1.959	-1.049	-1.496	-1.512	-1.862	-0.961	-1.206	-1.614	-1.302	-1.156	-0.930	-0.956	-0.958	-1.302	-0.954
hartree fock	ROHF		-2.211	-2.211	-2.188	-1.916	-1.916	-1.122	-1.455	-1.612			-1.295	-1.575	-1.264	-1.268	-2.131	-1.971	-1.891
density functional	BLYP	-4.844	-0.917	-0.917	-0.728	-0.601	-0.591	0.728	0.011	0.001	-0.483		0.417	-0.218	0.249		0.827	0.826		0.249
	B1B95	-4.947	-0.974	-0.974	-0.814	-0.662	-0.751	0.443	-0.240	-0.142	-0.544		0.208	-0.298	0.078		0.552	0.534		0.090
	B3LYP	-4.796	-0.822	-0.822	-0.646	-0.500	-0.492	0.696	0.071	0.060	-0.387	0.770	0.445	-0.130	0.299	0.483	0.800	0.793	0.797	0.300
	B3LYPultrafine		-0.822			-0.500	-0.493	0.696	0.071				0.445	-0.130	0.299		0.800	0.793
	B3PW91	-4.921	-0.857	-0.857	-0.706	-0.555	-0.544	0.516	-0.028	-0.037	-0.442		0.305	-0.202	0.188		0.628	0.619		0.188
	mPW1PW91	-4.994	-0.904	-0.921	-0.776	-0.603	-0.594	0.453	-0.082	-0.107	-0.507		0.228	-0.249	0.131		0.555	0.545		0.131
	M06-2X	-5.108	-1.059	-1.059	-0.846	-0.689	-0.682	0.404	-0.159	-0.168	-0.569		0.217	-0.330	0.105		0.497	0.514
	PBEPBE	-4.958	-0.869	-0.868	-0.703	-0.568	-0.556	0.664	0.004	-0.003	-0.448	0.742	0.377	-0.191	0.239		0.776	0.775		0.239
	PBEPBEultrafine		-0.868			-0.568	-0.556	0.663	0.004				0.376	-0.190	0.239		0.775	0.774
	PBE1PBE	-5.071	-0.942	-0.942	-0.793	-0.635	-0.635	0.442	-0.112	-0.122	-0.523		0.221	-0.278	0.107		0.558	0.549
	HSEh1PBE	-5.066	-0.958	-0.958	-0.802	-0.645	-0.636	0.442	-0.115	-0.125	-0.531		0.224	-0.284	0.105		0.559	0.547
	TPSSh		-0.912	-0.912	-0.780	-0.650	-0.642	0.394	-0.146		-0.550		0.178	-0.321	0.058		0.491	0.491
	wB97X-D			-0.888		-0.551		0.532		-0.025			0.321	0.532	0.186			0.620
	B97D3		-0.834			-0.545		0.625		0.018		0.713	0.380		0.235			0.723
		STO-3G	3-21G	3-21G*	6-31G	6-31G*	6-31G**	6-31+G**	6-311G*	6-311G**	6-31G(2df,p)	6-311+G(3df,2p)	TZVP	cc-pVDZ	cc-pVTZ	cc-pVQZ	aug-cc-pVDZ	aug-cc-pVTZ	aug-cc-pVQZ	cc-pV(T+d)Z	daug-cc-pVTZ
Moller Plesset perturbation	MP2	-6.409	-1.814	-1.814	-1.570	-1.229	-1.146		-0.613	-0.505	-0.821		-0.151	-0.648	-0.028	0.249	0.407	0.527	0.573	-0.028
	MP2=FULL	-6.409	-1.813	-1.813	-1.568	-1.230	-1.149	0.040	-0.611	-0.504	-0.823		-0.151	-0.649	-0.050	0.240	0.407	0.513	0.565
	ROMP2	-6.371	-1.784	-1.784	-1.538	-1.210	-1.130	0.058	-0.594	-0.489	-0.802		-0.135	-0.631	-0.012		-1.477
	MP3					-1.195		0.126					-0.143	-0.595	-0.001
	MP3=FULL					-1.197		0.022					-0.145	-0.597	-0.027
	MP4		-1.748			-1.140				-0.414			-0.069	-0.554	0.069		0.509	0.616
	MP4=FULL		-1.747			-1.142				-0.415				-0.557	0.043		0.508	0.597
	B2PLYP	-5.371	-1.195	-1.195	-0.996	-0.788	-0.760	0.426	-0.208	-0.184	-0.585		0.193	-0.352	0.132		0.618	0.649
	B2PLYP=FULL	-5.371	-1.194	-1.194	-0.995	-0.788	-0.761	0.425	-0.207	-0.184	-0.586		0.193	-0.352	0.125		0.618	0.645
	B2PLYP=FULLultrafine	-5.371	-1.194	-1.194	-0.995	-0.788	-0.761	0.425	-0.208	-0.184	-0.586		0.193	-0.353	0.125		0.618	0.645
Configuration interaction	CID		-1.819	-1.819	-1.583	-1.250			-0.665						-0.152
Configuration interaction	CISD			-1.809	-1.575	-1.239			-0.657						-0.150
		STO-3G	3-21G	3-21G*	6-31G	6-31G*	6-31G**	6-31+G**	6-311G*	6-311G**	6-31G(2df,p)	6-311+G(3df,2p)	TZVP	cc-pVDZ	cc-pVTZ	cc-pVQZ	aug-cc-pVDZ	aug-cc-pVTZ	aug-cc-pVQZ	cc-pV(T+d)Z	daug-cc-pVTZ
Quadratic configuration interaction	QCISD		-1.770	-7.292	-1.526	-1.171	-1.092	0.061	-0.571	-0.470	-0.766		-0.136	-0.597	-0.025		0.416	0.486		-0.024
	QCISD(T)					-1.143			-0.530				-0.076	-0.559	0.051		0.509	0.604		0.051
	QCISD(T)=FULL					-1.145		0.128						-0.561	0.024	0.305	0.508	0.585	0.623
	QCISD(TQ)					-1.146		0.130						-0.557	0.051	0.315	0.511	0.600
	QCISD(TQ)=FULL					-1.148		0.127						-0.559	0.024	0.303	0.509	0.582	0.618
Coupled Cluster	CCD		-1.783	-1.783	-1.538	-1.187	-1.104	0.017	-0.585	-0.479	-0.777		-0.151	-0.603	-0.030		0.385	0.461		-0.030
	CCSD					-1.179	-1.098	0.049	-0.578		-0.772		-0.143	-0.601	-0.029	0.215	0.405	0.476	0.501
	CCSD=FULL					-1.181					-0.776		-0.145	-0.603	-0.056	0.203	0.404	0.458	0.489
	CCSD(T)					-1.146	-1.062	0.125	-0.533				-0.079	-0.560	0.050	0.314	0.504		0.629	0.050
	CCSD(T)=FULL					-1.148							-0.081	-0.563	0.023	0.303	0.503	0.581
		STO-3G	3-21G	3-21G*	6-31G	6-31G*	6-31G**	6-31+G**	6-311G*	6-311G**	6-31G(2df,p)	6-311+G(3df,2p)	TZVP	cc-pVDZ	cc-pVTZ	cc-pVQZ	aug-cc-pVDZ	aug-cc-pVTZ	aug-cc-pVQZ	cc-pV(T+d)Z	daug-cc-pVTZ

		CEP-31G	CEP-31G*	CEP-121G	CEP-121G*	LANL2DZ	SDD	cc-pVTZ-PP	aug-cc-pVTZ-PP	Def2TZVPP
hartree fock	HF	-1.596	-1.447	-1.443	-1.294	-1.632	-1.629			-1.149
density functional	B3LYP	-0.155	-0.034	0.092	0.210	-0.169	-0.171			0.495
density functional	PBEPBE									0.434
Moller Plesset perturbation	MP2	-0.950	-0.650	-0.700	-0.403	-0.949	-0.940			0.169

	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 Electron Affininty for CH2 (Methylene)

Calculated Electron Affininty for CH₂ (Methylene)