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

using model chemistry: MP4/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-304.543745
Energy at 298.15K-304.550258
HF Energy-303.820214
Nuclear repulsion energy264.568476
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 MP4/3-21G
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 3166 3071        
2 A1 3127 3033        
3 A1 3001 2910        
4 A1 1668 1617        
5 A1 1572 1524        
6 A1 1529 1483        
7 A1 1428 1385        
8 A1 1233 1195        
9 A1 964 935        
10 A1 840 814        
11 A1 722 700        
12 A1 504 489        
13 A2 1261 1223        
14 A2 1004 974        
15 A2 753 731        
16 A2 359 348        
17 B1 3022 2931        
18 B1 1018 988        
19 B1 980 951        
20 B1 849 823        
21 B1 582 564        
22 B1 297 288        
23 B1 117 114        
24 B2 3163 3068        
25 B2 3125 3031        
26 B2 1624 1574        
27 B2 1417 1374        
28 B2 1369 1328        
29 B2 1268 1230        
30 B2 1145 1110        
31 B2 961 932        
32 B2 573 556        
33 B2 428 415        

Unscaled Zero Point Vibrational Energy (zpe) 22533.1 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 21852.6 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 MP4/3-21G
ABC
0.17113 0.08540 0.05758

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.132
C2 0.000 0.000 -1.865
C3 0.000 1.266 0.328
C4 0.000 -1.266 0.328
C5 0.000 1.273 -1.025
C6 0.000 -1.273 -1.025
O7 0.000 0.000 2.396
H8 0.000 2.192 0.902
H9 0.000 -2.192 0.902
H10 0.000 2.217 -1.574
H11 0.000 -2.217 -1.574
H12 0.884 0.000 -2.528
H13 -0.884 0.000 -2.528

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12 H13
C12.99691.49961.49962.50422.50421.26442.20422.20423.49823.49823.76523.7652
C22.99692.53192.53191.52521.52524.26133.53063.53062.23652.23651.10521.1052
C31.49962.53192.53161.35252.87642.42511.09023.50552.12643.96853.24653.2465
C41.49962.53192.53162.87641.35252.42513.50551.09023.96852.12643.24653.2465
C52.50421.52521.35252.87642.54563.65012.13533.96491.09263.53322.15922.1592
C62.50421.52522.87641.35252.54563.65013.96492.13533.53321.09262.15922.1592
O71.26444.26132.42512.42513.65013.65012.65282.65284.54734.54735.00305.0030
H82.20423.53061.09023.50552.13533.96492.65284.38452.47645.05744.16614.1661
H92.20423.53063.50551.09023.96492.13532.65284.38455.05742.47644.16614.1661
H103.49822.23652.12643.96851.09263.53324.54732.47645.05744.43482.57092.5709
H113.49822.23653.96852.12643.53321.09264.54735.05742.47644.43482.57092.5709
H123.76521.10523.24653.24652.15922.15925.00304.16614.16612.57092.57091.7685
H133.76521.10523.24653.24652.15922.15925.00304.16614.16612.57092.57091.7685

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 122.722 C1 C3 H8 115.759
C1 C4 C6 122.722 C1 C4 H9 115.759
C2 C5 C3 123.137 C2 C5 H10 116.397
C2 C6 C4 123.137 C2 C6 H11 116.397
C3 C1 C4 115.150 C3 C1 O7 122.425
C3 C5 H10 120.466 C4 C1 O7 122.425
C4 C6 H11 120.466 C5 C2 C6 113.132
C5 C2 H12 109.300 C5 C2 H13 109.300
C5 C3 H8 121.519 C6 C2 H12 109.300
C6 C2 H13 109.300 C6 C4 H9 121.519
H12 C2 H13 106.280
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability