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

using model chemistry: CCSD(T)=FULL/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD(T)=FULL/6-31G*
 hartrees
Energy at 0K-306.582305
Energy at 298.15K-306.588778
HF Energy-305.537330
Nuclear repulsion energy267.594978
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 CCSD(T)=FULL/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 3204 3110        
2 A1 3167 3074        
3 A1 3015 2926        
4 A1 1765 1713        
5 A1 1701 1651        
6 A1 1497 1453        
7 A1 1434 1392        
8 A1 1212 1176        
9 A1 973 944        
10 A1 897 870        
11 A1 779 756        
12 A1 502 487        
13 A2 1227 1191        
14 A2 967 939        
15 A2 743 721        
16 A2 345 335        
17 B1 3038 2949        
18 B1 1004 974        
19 B1 952 924        
20 B1 812 788        
21 B1 568 551        
22 B1 275 267        
23 B1 120 116        
24 B2 3202 3108        
25 B2 3166 3073        
26 B2 1678 1629        
27 B2 1447 1405        
28 B2 1414 1372        
29 B2 1302 1263        
30 B2 1164 1130        
31 B2 1011 981        
32 B2 578 561        
33 B2 449 436        

Unscaled Zero Point Vibrational Energy (zpe) 22802.2 cm-1
Scaled (by 0.9707) Zero Point Vibrational Energy (zpe) 22134.1 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 CCSD(T)=FULL/6-31G*
ABC
0.17354 0.08821 0.05912

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.114
C2 0.000 0.000 -1.833
C3 0.000 1.261 0.334
C4 0.000 -1.261 0.334
C5 0.000 1.259 -1.014
C6 0.000 -1.259 -1.014
O7 0.000 0.000 2.348
H8 0.000 2.184 0.913
H9 0.000 -2.184 0.913
H10 0.000 2.204 -1.562
H11 0.000 -2.204 -1.562
H12 0.874 0.000 -2.508
H13 -0.874 0.000 -2.508

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.94651.48211.48212.47242.47241.23382.19332.19333.46653.46653.72593.7259
C22.94652.50712.50711.50201.50204.18043.50893.50892.22072.22071.10431.1043
C31.48212.50712.52121.34832.85782.37541.09013.49312.11783.94963.23003.2300
C41.48212.50712.52122.85781.34832.37543.49311.09013.94962.11783.23003.2300
C52.47241.50201.34832.85782.51843.58962.13783.94601.09223.50642.14052.1405
C62.47241.50202.85781.34832.51843.58963.94602.13783.50641.09222.14052.1405
O71.23384.18042.37542.37543.58963.58962.61292.61294.48794.48794.93384.9338
H82.19333.50891.09013.49312.13783.94602.61294.36822.47535.03824.15234.1523
H92.19333.50893.49311.09013.94602.13782.61294.36825.03822.47534.15234.1523
H103.46652.22072.11783.94961.09223.50644.48792.47535.03824.40832.55292.5529
H113.46652.22073.94962.11783.50641.09224.48795.03822.47534.40832.55292.5529
H123.72591.10433.23003.23002.14052.14054.93384.15234.15232.55292.55291.7472
H133.72591.10433.23003.23002.14052.14054.93384.15234.15232.55292.55291.7472

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 121.667 C1 C3 H8 116.181
C1 C4 C6 121.667 C1 C4 H9 116.181
C2 C5 C3 123.097 C2 C5 H10 116.863
C2 C6 C4 123.097 C2 C6 H11 116.863
C3 C1 C4 116.544 C3 C1 O7 121.728
C3 C5 H10 120.040 C4 C1 O7 121.728
C4 C6 H11 120.040 C5 C2 C6 113.929
C5 C2 H12 109.479 C5 C2 H13 109.479
C5 C3 H8 122.152 C6 C2 H12 109.479
C6 C2 H13 109.479 C6 C4 H9 122.152
H12 C2 H13 104.577
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability