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

using model chemistry: G2

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at G2
 hartrees
Energy at 0K-306.899338
Energy at 298.15K-306.892558
HF Energy-305.541888
Nuclear repulsion energy270.439952
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 HF/6-31G*
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 3393 3197 0.31      
2 A1 3355 3161 12.32      
3 A1 3182 2998 21.40      
4 A1 1989 1874 469.97      
5 A1 1873 1765 0.00      
6 A1 1598 1505 5.36      
7 A1 1544 1454 3.09      
8 A1 1297 1222 8.48      
9 A1 1043 983 3.96      
10 A1 936 882 4.46      
11 A1 822 774 2.07      
12 A1 538 507 3.55      
13 A2 1334 1257 0.00      
14 A2 1128 1063 0.00      
15 A2 826 778 0.00      
16 A2 396 373 0.00      
17 B1 3202 3017 18.86      
18 B1 1150 1084 0.93      
19 B1 1056 995 33.68      
20 B1 935 881 60.09      
21 B1 637 600 14.91      
22 B1 342 322 3.15      
23 B1 135 127 2.07      
24 B2 3391 3195 21.08      
25 B2 3355 3161 17.54      
26 B2 1838 1732 1.34      
27 B2 1556 1466 30.62      
28 B2 1522 1434 6.78      
29 B2 1388 1307 41.80      
30 B2 1243 1171 10.62      
31 B2 1062 1001 5.53      
32 B2 618 582 0.12      
33 B2 491 463 20.26      

Unscaled Zero Point Vibrational Energy (zpe) 24585.0 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 23164.0 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=FULL/6-31G*
ABC
0.17533 0.08866 0.05952

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.108
C2 0.000 0.000 -1.825
C3 0.000 1.253 0.333
C4 0.000 -1.253 0.333
C5 0.000 1.253 -1.013
C6 0.000 -1.253 -1.013
O7 0.000 0.000 2.345
H8 0.000 2.175 0.907
H9 0.000 -2.175 0.907
H10 0.000 2.196 -1.556
H11 0.000 -2.196 -1.556
H12 0.869 0.000 -2.500
H13 -0.869 0.000 -2.500

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.93251.47341.47342.46302.46301.23712.18442.18443.45273.45273.71103.7110
C22.93252.49472.49471.49321.49324.16953.49203.49202.21262.21261.10081.1008
C31.47342.49472.50591.34522.84432.37051.08663.47602.11133.93263.21703.2170
C41.47342.49472.50592.84431.34522.37053.47601.08663.93262.11133.21703.2170
C52.46301.49321.34522.84432.50613.58372.12983.92921.08873.49192.13032.1303
C62.46301.49322.84431.34522.50613.58373.92922.12983.49191.08872.13032.1303
O71.23714.16952.37052.37053.58373.58372.60732.60734.47694.47694.92224.9222
H82.18443.49201.08663.47602.12983.92922.60734.35032.46365.01784.13474.1347
H92.18443.49203.47601.08663.92922.12982.60734.35035.01782.46364.13474.1347
H103.45272.21262.11133.93261.08873.49194.47692.46365.01784.39252.54362.5436
H113.45272.21263.93262.11133.49191.08874.47695.01782.46364.39252.54362.5436
H123.71101.10083.21703.21702.13032.13034.92224.13474.13472.54362.54361.7386
H133.71101.10083.21703.21702.13032.13034.92224.13474.13472.54362.54361.7386

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 121.370 C1 C3 H8 116.486
C1 C4 C6 121.370 C1 C4 H9 116.486
C2 C5 C3 123.157 C2 C5 H10 116.920
C2 C6 C4 123.157 C2 C6 H11 116.920
C3 C1 C4 117.003 C3 C1 O7 121.499
C3 C5 H10 119.923 C4 C1 O7 121.499
C4 C6 H11 119.923 C5 C2 C6 113.943
C5 C2 H12 109.455 C5 C2 H13 109.455
C5 C3 H8 122.144 C6 C2 H12 109.455
C6 C2 H13 109.455 C6 C4 H9 122.144
H12 C2 H13 104.667
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability