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

using model chemistry: QCISD(T)/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD(T)/TZVP
 hartrees
Energy at 0K-306.736261
Energy at 298.15K 
HF Energy-305.634376
Nuclear repulsion energy267.888635
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 QCISD(T)/TZVP
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 3207 3089        
2 A1 3170 3053        
3 A1 3021 2910        
4 A1 1725 1661        
5 A1 1672 1610        
6 A1 1458 1405        
7 A1 1417 1365        
8 A1 1196 1152        
9 A1 951 916        
10 A1 880 848        
11 A1 763 735        
12 A1 497 478        
13 A2 1179 1136        
14 A2 852 820        
15 A2 687 662        
16 A2 250 241        
17 B1 3044 2932        
18 B1 957 921        
19 B1 881 848        
20 B1 639 615        
21 B1 456 440        
22 B1 97 93        
23 B1 380i 366i        
24 B2 3205 3087        
25 B2 3169 3052        
26 B2 1648 1587        
27 B2 1421 1369        
28 B2 1392 1341        
29 B2 1278 1231        
30 B2 1144 1102        
31 B2 993 956        
32 B2 568 547        
33 B2 448 431        

Unscaled Zero Point Vibrational Energy (zpe) 21940.5 cm-1
Scaled (by 0.9632) Zero Point Vibrational Energy (zpe) 21133.1 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 QCISD(T)/TZVP
ABC
0.17351 0.08843 0.05921

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.116
C2 0.000 0.000 -1.831
C3 0.000 1.261 0.332
C4 0.000 -1.261 0.332
C5 0.000 1.260 -1.013
C6 0.000 -1.260 -1.013
O7 0.000 0.000 2.344
H8 0.000 2.182 0.907
H9 0.000 -2.182 0.907
H10 0.000 2.201 -1.559
H11 0.000 -2.201 -1.559
H12 0.874 0.000 -2.498
H13 -0.874 0.000 -2.498

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.94721.48451.48452.47432.47431.22832.19172.19173.46403.46403.71813.7181
C22.94722.50402.50401.50231.50234.17543.50073.50072.21752.21751.09921.0992
C31.48452.50402.52161.34562.85762.37441.08533.49002.11203.94453.21923.2192
C41.48452.50402.52162.85761.34562.37443.49001.08533.94452.11203.21923.2192
C52.47431.50231.34562.85762.52043.58632.12963.94111.08743.50372.13442.1344
C62.47431.50232.85761.34562.52043.58633.94112.12963.50371.08742.13442.1344
O71.22834.17542.37442.37443.58633.58632.61272.61274.48104.48104.92044.9204
H82.19173.50071.08533.49002.12963.94112.61274.36332.46575.02844.13694.1369
H92.19173.50073.49001.08533.94112.12962.61274.36335.02842.46574.13694.1369
H103.46402.21752.11203.94451.08743.50374.48102.46575.02844.40152.54732.5473
H113.46402.21753.94452.11203.50371.08744.48105.02842.46574.40152.54732.5473
H123.71811.09923.21923.21922.13442.13444.92044.13694.13692.54732.54731.7476
H133.71811.09923.21923.21922.13442.13444.92044.13694.13692.54732.54731.7476

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 121.842 C1 C3 H8 116.181
C1 C4 C6 121.842 C1 C4 H9 116.181
C2 C5 C3 123.007 C2 C5 H10 116.896
C2 C6 C4 123.007 C2 C6 H11 116.896
C3 C1 C4 116.267 C3 C1 O7 121.866
C3 C5 H10 120.097 C4 C1 O7 121.866
C4 C6 H11 120.097 C5 C2 C6 114.035
C5 C2 H12 109.283 C5 C2 H13 109.283
C5 C3 H8 121.978 C6 C2 H12 109.283
C6 C2 H13 109.283 C6 C4 H9 121.978
H12 C2 H13 105.308
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability