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All results from a given calculation for C6H6O (2,5-Cyclohexadienone)

using model chemistry: MP2/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/LANL2DZ
 hartrees
Energy at 0K-306.064651
Energy at 298.15K-306.070987
HF Energy-305.439054
Nuclear repulsion energy262.746417
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/LANL2DZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3200 3082 0.20      
2 A1 3161 3045 9.28      
3 A1 3005 2894 15.48      
4 A1 1662 1600 40.14      
5 A1 1547 1490 55.56      
6 A1 1492 1437 18.23      
7 A1 1411 1359 0.19      
8 A1 1216 1171 5.50      
9 A1 957 921 2.06      
10 A1 868 836 9.05      
11 A1 752 724 2.31      
12 A1 494 476 1.26      
13 A2 1208 1163 0.00      
14 A2 936 901 0.00      
15 A2 720 694 0.00      
16 A2 350 337 0.00      
17 B1 3044 2931 16.01      
18 B1 996 959 13.92      
19 B1 933 899 5.84      
20 B1 803 773 65.75      
21 B1 543 523 31.18      
22 B1 272 262 1.70      
23 B1 92 88 1.45      
24 B2 3197 3079 42.88      
25 B2 3161 3044 15.51      
26 B2 1616 1556 4.95      
27 B2 1419 1366 22.40      
28 B2 1391 1340 3.30      
29 B2 1304 1255 29.09      
30 B2 1160 1118 13.39      
31 B2 989 953 10.59      
32 B2 577 556 1.15      
33 B2 434 418 13.53      

Unscaled Zero Point Vibrational Energy (zpe) 22454.1 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 21625.5 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/LANL2DZ
ABC
0.16838 0.08455 0.05689

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.124
C2 0.000 0.000 -1.871
C3 0.000 1.278 0.339
C4 0.000 -1.278 0.339
C5 0.000 1.282 -1.036
C6 0.000 -1.282 -1.036
O7 0.000 0.000 2.408
H8 0.000 2.209 0.917
H9 0.000 -2.209 0.917
H10 0.000 2.233 -1.582
H11 0.000 -2.233 -1.582
H12 0.885 0.000 -2.541
H13 -0.885 0.000 -2.541

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.99591.50051.50052.51222.51221.28372.21842.21843.50883.50883.77103.7710
C22.99592.55332.55331.52981.52984.27963.55703.55702.25212.25211.11011.1101
C31.50052.55332.55671.37502.90602.43241.09523.53462.14504.00273.27303.2730
C41.50052.55332.55672.90601.37502.43243.53461.09524.00272.14503.27303.2730
C52.51221.52981.37502.90602.56343.67512.16183.99961.09703.55722.16602.1660
C62.51221.52982.90601.37502.56343.67513.99962.16183.55721.09702.16602.1660
O71.28374.27962.43242.43243.67513.67512.66512.66514.57264.57265.02795.0279
H82.21843.55701.09523.53462.16183.99962.66514.41742.49875.09664.19754.1975
H92.21843.55703.53461.09523.99962.16182.66514.41745.09662.49874.19754.1975
H103.50882.25212.14504.00271.09703.55724.57262.49875.09664.46682.58692.5869
H113.50882.25214.00272.14503.55721.09704.57265.09662.49874.46682.58692.5869
H123.77101.11013.27303.27302.16602.16605.02794.19754.19752.58692.58691.7707
H133.77101.11013.27303.27302.16602.16605.02794.19754.19752.58692.58691.7707

picture of 2,5-Cyclohexadienone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C5 121.712 C1 C3 H8 116.578
C1 C4 C6 121.712 C1 C4 H9 116.578
C2 C5 C3 122.951 C2 C5 H10 117.084
C2 C6 C4 122.951 C2 C6 H11 117.084
C3 C1 C4 116.853 C3 C1 O7 121.573
C3 C5 H10 119.966 C4 C1 O7 121.573
C4 C6 H11 119.966 C5 C2 C6 113.821
C5 C2 H12 109.231 C5 C2 H13 109.231
C5 C3 H8 121.709 C6 C2 H12 109.231
C6 C2 H13 109.231 C6 C4 H9 121.709
H12 C2 H13 105.784
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability