CCCBDB calculation results Page

State	Conformation	minimum conformation	conformer description	state description
1	1	yes	OH	¹A_1G

Energy calculated at MP2/SDD

	hartrees
Energy at 0K	-307.953618
Energy at 298.15K	-307.963294
HF Energy	-307.271566
Nuclear repulsion energy	357.521429

The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.

Vibrational Frequencies calculated at MP2/SDD

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)	Raman Act (Å⁴/u)	Dep P	Dep U
1	A_1g	3170	3060	0.00	420.25	0.00	0.00
2	A_1g	970	936	0.00	86.79	0.00	0.00
3	A_2u	3103	2996	0.00	0.00	0.33	0.50
4	A_2u	1034	998	0.00	0.00	0.33	0.50
5	E_g	1101	1063	0.00	1.15	0.75	0.86
5	E_g	1101	1063	0.00	1.15	0.75	0.86
6	E_g	910	879	0.00	30.56	0.75	0.86
6	E_g	910	879	0.00	30.56	0.75	0.86
7	E_u	1077	1039	0.00	0.00	0.00	0.00
7	E_u	1077	1039	0.00	0.00	0.00	0.00
8	E_u	598	577	0.00	0.00	0.00	0.00
8	E_u	598	577	0.00	0.00	0.00	0.00
9	T_1g	1121	1082	0.00	0.00	0.63	0.77
9	T_1g	1121	1082	0.00	0.00	0.33	0.50
9	T_1g	1121	1082	0.00	0.00	0.00	0.00
10	T_1u	3139	3030	110.03	0.00	0.75	0.86
10	T_1u	3139	3030	110.03	0.00	0.74	0.85
10	T_1u	3139	3030	110.03	0.00	0.00	0.00
11	T_1u	1242	1199	6.54	0.00	0.00	0.00
11	T_1u	1242	1199	6.54	0.00	0.00	0.00
11	T_1u	1242	1199	6.54	0.00	0.00	0.00
12	T_1u	828	799	16.02	0.00	0.00	0.00
12	T_1u	828	799	16.02	0.00	0.00	0.00
12	T_1u	828	799	16.02	0.00	0.00	0.00
13	T_2g	3122	3014	0.00	140.60	0.75	0.86
13	T_2g	3122	3014	0.00	140.60	0.75	0.86
13	T_2g	3122	3014	0.00	140.60	0.75	0.86
14	T_2g	1143	1103	0.00	7.24	0.75	0.86
14	T_2g	1143	1103	0.00	7.24	0.75	0.86
14	T_2g	1143	1103	0.00	7.24	0.75	0.86
15	T_2g	788	760	0.00	4.99	0.75	0.86
15	T_2g	788	760	0.00	4.99	0.75	0.86
15	T_2g	788	760	0.00	4.99	0.75	0.86
16	T_2g	654	631	0.00	2.85	0.75	0.86
16	T_2g	654	631	0.00	2.85	0.75	0.86
16	T_2g	654	631	0.00	2.85	0.75	0.86
17	T_2u	1025	989	0.00	0.00	0.00	0.00
17	T_2u	1025	989	0.00	0.00	0.00	0.00
17	T_2u	1025	989	0.00	0.00	0.00	0.00
18	T_2u	810	782	0.00	0.00	0.00	0.00
18	T_2u	810	782	0.00	0.00	0.00	0.00
18	T_2u	810	782	0.00	0.00	0.00	0.00

Unscaled Zero Point Vibrational Energy (zpe) 28631.0 cm^-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 27637.5 cm^-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.

Rotational Constants (cm^-1) from geometry optimized at MP2/SDD

A	B	C
0.10612	0.10612	0.10612

See section I.F.4 to change rotational constant units

Geometric Data calculated at MP2/SDD

Point Group is O_h

Cartesians (Å)

Atom	x (Å)	y (Å)	z (Å)
C1	0.808	0.808	0.808
C2	-0.808	0.808	0.808
C3	0.808	0.808	-0.808
C4	-0.808	0.808	-0.808
C5	0.808	-0.808	0.808
C6	-0.808	-0.808	0.808
C7	0.808	-0.808	-0.808
C8	-0.808	-0.808	-0.808
H9	1.442	1.442	1.442
H10	-1.442	1.442	1.442
H11	1.442	1.442	-1.442
H12	-1.442	1.442	-1.442
H13	1.442	-1.442	1.442
H14	-1.442	-1.442	1.442
H15	1.442	-1.442	-1.442
H16	-1.442	-1.442	-1.442

Atom - Atom Distances (Å)

	C1	C2	C3	C4	C5	C6	C7	C8	H9	H10	H11	H12	H13	H14	H15	H16
C1		1.6157	1.6157	2.2850	1.6157	2.2850	2.2850	2.7985	1.0987	2.4223	2.4223	3.2447	2.4223	3.2447	3.2447	3.8973
C2	1.6157		2.2850	1.6157	2.2850	1.6157	2.7985	2.2850	2.4223	1.0987	3.2447	2.4223	3.2447	2.4223	3.8973	3.2447
C3	1.6157	2.2850		1.6157	2.2850	2.7985	1.6157	2.2850	2.4223	3.2447	1.0987	2.4223	3.2447	3.8973	2.4223	3.2447
C4	2.2850	1.6157	1.6157		2.7985	2.2850	2.2850	1.6157	3.2447	2.4223	2.4223	1.0987	3.8973	3.2447	3.2447	2.4223
C5	1.6157	2.2850	2.2850	2.7985		1.6157	1.6157	2.2850	2.4223	3.2447	3.2447	3.8973	1.0987	2.4223	2.4223	3.2447
C6	2.2850	1.6157	2.7985	2.2850	1.6157		2.2850	1.6157	3.2447	2.4223	3.8973	3.2447	2.4223	1.0987	3.2447	2.4223
C7	2.2850	2.7985	1.6157	2.2850	1.6157	2.2850		1.6157	3.2447	3.8973	2.4223	3.2447	2.4223	3.2447	1.0987	2.4223
C8	2.7985	2.2850	2.2850	1.6157	2.2850	1.6157	1.6157		3.8973	3.2447	3.2447	2.4223	3.2447	2.4223	2.4223	1.0987
H9	1.0987	2.4223	2.4223	3.2447	2.4223	3.2447	3.2447	3.8973		2.8844	2.8844	4.0792	2.8844	4.0792	4.0792	4.9960
H10	2.4223	1.0987	3.2447	2.4223	3.2447	2.4223	3.8973	3.2447	2.8844		4.0792	2.8844	4.0792	2.8844	4.9960	4.0792
H11	2.4223	3.2447	1.0987	2.4223	3.2447	3.8973	2.4223	3.2447	2.8844	4.0792		2.8844	4.0792	4.9960	2.8844	4.0792
H12	3.2447	2.4223	2.4223	1.0987	3.8973	3.2447	3.2447	2.4223	4.0792	2.8844	2.8844		4.9960	4.0792	4.0792	2.8844
H13	2.4223	3.2447	3.2447	3.8973	1.0987	2.4223	2.4223	3.2447	2.8844	4.0792	4.0792	4.9960		2.8844	2.8844	4.0792
H14	3.2447	2.4223	3.8973	3.2447	2.4223	1.0987	3.2447	2.4223	4.0792	2.8844	4.9960	4.0792	2.8844		4.0792	2.8844
H15	3.2447	3.8973	2.4223	3.2447	2.4223	3.2447	1.0987	2.4223	4.0792	4.9960	2.8844	4.0792	2.8844	4.0792		2.8844
H16	3.8973	3.2447	3.2447	2.4223	3.2447	2.4223	2.4223	1.0987	4.9960	4.0792	4.0792	2.8844	4.0792	2.8844	2.8844

picture of cubane state 1 conformation 1

More geometry information
Calculated Bond Angles

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C4	90.000	C1	C2	C6	90.000
C1	C2	H10	125.264	C1	C3	C4	90.000
C1	C3	C7	90.000	C1	C3	H11	125.264
C1	C5	C6	90.000	C1	C5	C7	90.000
C1	C5	H13	125.264	C2	C1	C3	90.000
C2	C1	C5	90.000	C2	C1	H9	125.264
C2	C4	C3	90.000	C2	C4	C8	90.000
C2	C4	H12	125.264	C2	C6	C5	90.000
C2	C6	C8	90.000	C2	C6	H14	125.264
C3	C1	C5	90.000	C3	C1	H9	125.264
C3	C4	C8	90.000	C3	C4	H12	125.264
C3	C7	C5	90.000	C3	C7	C8	90.000
C3	C7	H15	125.264	C4	C2	C6	90.000
C4	C2	H10	125.264	C4	C3	C7	90.000
C4	C3	H11	125.264	C4	C8	C6	90.000
C4	C8	C7	90.000	C4	C8	H16	125.264
C5	C1	H9	125.264	C5	C6	C8	90.000
C5	C6	H14	125.264	C5	C7	C8	90.000
C5	C7	H15	125.264	C6	C2	H10	125.264
C6	C5	C7	90.000	C6	C5	H13	125.264
C6	C8	C7	90.000	C6	C8	H16	125.264
C7	C3	H11	125.264	C7	C5	H13	125.264
C7	C8	H16	125.264	C8	C4	H12	125.264
C8	C6	H14	125.264	C8	C7	H15	125.264

Electronic energy levels

Charges, Dipole, Quadrupole and Polarizability

All results from a given calculation for C₈H₈ (cubane)

using model chemistry: MP2/SDD

States and conformations

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for C8H8 (cubane)

using model chemistry: MP2/SDD

States and conformations

All results from a given calculation for C₈H₈ (cubane)