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

using model chemistry: HF/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/3-21G*
 hartrees
Energy at 0K-303.829241
Energy at 298.15K-303.836337
HF Energy-303.829241
Nuclear repulsion energy270.108969
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/3-21G*
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 3390 3060 0.02      
2 A1 3346 3020 4.58      
3 A1 3178 2868 7.90      
4 A1 1930 1742 279.46      
5 A1 1851 1670 10.42      
6 A1 1607 1451 12.16      
7 A1 1555 1404 2.71      
8 A1 1335 1205 9.21      
9 A1 1052 949 4.03      
10 A1 906 818 5.68      
11 A1 801 723 1.52      
12 A1 553 500 3.80      
13 A2 1378 1243 0.00      
14 A2 1188 1073 0.00      
15 A2 861 777 0.00      
16 A2 418 377 0.00      
17 B1 3197 2886 7.91      
18 B1 1203 1086 2.80      
19 B1 1073 969 56.35      
20 B1 977 881 54.89      
21 B1 658 594 33.52      
22 B1 363 327 3.00      
23 B1 140 126 1.17      
24 B2 3387 3057 13.96      
25 B2 3345 3019 12.77      
26 B2 1831 1653 2.50      
27 B2 1539 1390 14.27      
28 B2 1499 1353 5.08      
29 B2 1385 1250 36.17      
30 B2 1249 1128 28.84      
31 B2 1042 941 11.53      
32 B2 635 573 0.71      
33 B2 482 435 17.11      

Unscaled Zero Point Vibrational Energy (zpe) 24676.1 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 22272.6 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 HF/3-21G*
ABC
0.17587 0.08987 0.06013

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.110
C2 0.000 0.000 -1.825
C3 0.000 1.250 0.323
C4 0.000 -1.250 0.323
C5 0.000 1.256 -0.997
C6 0.000 -1.256 -0.997
O7 0.000 0.000 2.327
H8 0.000 2.158 0.890
H9 0.000 -2.158 0.890
H10 0.000 2.184 -1.536
H11 0.000 -2.184 -1.536
H12 0.870 0.000 -2.479
H13 -0.870 0.000 -2.479

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.93461.47691.47692.45232.45231.21742.16942.16943.43073.43073.69263.6926
C22.93462.48502.48501.50401.50404.15213.46833.46832.20312.20311.08871.0887
C31.47692.48502.49971.31972.83172.36211.07093.45502.08043.90473.18893.1889
C41.47692.48502.49972.83171.31972.36213.45501.07093.90472.08043.18893.1889
C52.45231.50401.31972.83172.51103.55322.09163.90051.07373.48162.12852.1285
C62.45231.50402.83171.31972.51103.55323.90052.09163.48161.07372.12852.1285
O71.21744.15212.36212.36213.55323.55322.59302.59304.43784.43784.88424.8842
H82.16943.46831.07093.45502.09163.90052.59304.31652.42614.97414.09454.0945
H92.16943.46833.45501.07093.90052.09162.59304.31654.97412.42614.09454.0945
H103.43072.20312.08043.90471.07373.48164.43782.42614.97414.36812.53312.5331
H113.43072.20313.90472.08043.48161.07374.43784.97412.42614.36812.53312.5331
H123.69261.08873.18893.18892.12852.12854.88424.09454.09452.53312.53311.7410
H133.69261.08873.18893.18892.12852.12854.88424.09454.09452.53312.53311.7410

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 122.440 C1 C3 H8 115.829
C1 C4 C6 122.440 C1 C4 H9 115.829
C2 C5 C3 123.163 C2 C5 H10 116.447
C2 C6 C4 123.163 C2 C6 H11 116.447
C3 C1 C4 115.613 C3 C1 O7 122.194
C3 C5 H10 120.391 C4 C1 O7 122.194
C4 C6 H11 120.391 C5 C2 C6 113.183
C5 C2 H12 109.311 C5 C2 H13 109.311
C5 C3 H8 121.731 C6 C2 H12 109.311
C6 C2 H13 109.311 C6 C4 H9 121.731
H12 C2 H13 106.174
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.503      
2 C -0.526      
3 C -0.288      
4 C -0.288      
5 C -0.172      
6 C -0.172      
7 O -0.601      
8 H 0.265      
9 H 0.265      
10 H 0.250      
11 H 0.250      
12 H 0.256      
13 H 0.256      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -4.681 4.681
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.304 0.000 0.000
y 0.000 -36.319 0.000
z 0.000 0.000 -46.310
Traceless
 xyz
x -1.990 0.000 0.000
y 0.000 8.488 0.000
z 0.000 0.000 -6.498
Polar
3z2-r2-12.996
x2-y2-6.985
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.410 0.000 0.000
y 0.000 7.425 0.000
z 0.000 0.000 12.881


<r2> (average value of r2) Å2
<r2> 186.714
(<r2>)1/2 13.664