return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C6H6 (Benzvalene)

using model chemistry: MP4=FULL/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=FULL/3-21G
 hartrees
Energy at 0K-229.866565
Energy at 298.15K-229.872875
HF Energy-229.261226
Nuclear repulsion energy210.052357
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=FULL/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 3259 3190        
2 A1 3231 3163        
3 A1 3201 3133        
4 A1 1558 1525        
5 A1 1331 1303        
6 A1 1143 1119        
7 A1 1104 1081        
8 A1 985 964        
9 A1 885 866        
10 A1 815 798        
11 A1 687 672        
12 A2 1152 1128        
13 A2 954 934        
14 A2 870 851        
15 A2 727 712        
16 A2 521 510        
17 B1 3238 3169        
18 B1 1132 1108        
19 B1 1031 1009        
20 B1 734 718        
21 B1 606 593        
22 B1 514 503        
23 B2 3207 3139        
24 B2 3195 3127        
25 B2 1343 1314        
26 B2 1268 1241        
27 B2 1198 1173        
28 B2 957 936        
29 B2 864 845        
30 B2 794 777        

Unscaled Zero Point Vibrational Energy (zpe) 21250.1 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 20799.6 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=FULL/3-21G
ABC
0.23603 0.16934 0.12550

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.751 0.000 -1.035
C2 -0.751 0.000 -1.035
C3 0.000 1.102 -0.203
C4 0.000 -1.102 -0.203
C5 0.000 0.677 1.269
C6 0.000 -0.677 1.269
H7 1.543 0.000 -1.768
H8 -1.543 0.000 -1.768
H9 0.000 2.138 -0.528
H10 0.000 -2.138 -0.528
H11 0.000 1.360 2.113
H12 0.000 -1.360 2.113

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.50141.57141.57142.51632.51631.07972.40842.32242.32243.51033.5103
C21.50141.57141.57142.51632.51632.40841.07972.32242.32243.51033.5103
C31.57141.57142.20371.53252.30952.45862.45861.08633.25652.33043.3802
C41.57141.57142.20372.30951.53252.45862.45863.25651.08633.38022.3304
C52.51632.51631.53252.30951.35473.47373.47372.31633.34051.08532.2052
C62.51632.51632.30951.53251.35473.47373.47373.34052.31632.20521.0853
H71.07972.40842.45862.45863.47373.47373.08682.91422.91424.39244.3924
H82.40841.07972.45862.45863.47373.47373.08682.91422.91424.39244.3924
H92.32242.32241.08633.25652.31633.34052.91422.91424.27682.75314.3834
H102.32242.32243.25651.08633.34052.31632.91422.91424.27684.38342.7531
H113.51033.51032.33043.38021.08532.20524.39244.39242.75314.38342.7204
H123.51033.51033.38022.33042.20521.08534.39244.39244.38342.75312.7204

picture of Benzvalene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 61.463 C1 C2 C4 61.463
C1 C2 H8 137.237 C1 C3 C2 57.074
C1 C3 C5 108.320 C1 C3 H9 120.723
C1 C4 C2 57.074 C1 C4 C6 108.320
C1 C4 H10 120.723 C2 C1 C3 61.463
C2 C1 C4 61.463 C2 C1 H7 137.237
C2 C3 C5 108.320 C2 C3 H9 120.723
C2 C4 C6 108.320 C2 C4 H10 120.723
C3 C1 C4 89.043 C3 C1 H7 135.242
C3 C2 C4 89.043 C3 C2 H8 135.242
C3 C5 C6 106.081 C3 C5 H11 124.925
C4 C1 H7 135.242 C4 C2 H8 135.242
C4 C6 C5 106.081 C4 C6 H12 124.925
C5 C3 H9 123.477 C5 C6 H12 128.994
C6 C4 H10 123.477 C6 C5 H11 128.994
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability