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All results from a given calculation for C6H6 (Benzvalene)

using model chemistry: CISD/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 CISD/3-21G*
 hartrees
Energy at 0K-229.744856
Energy at 298.15K-229.751459
HF Energy-229.265871
Nuclear repulsion energy212.307613
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 CISD/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 3371 3150 1.85      
2 A1 3340 3121 9.31      
3 A1 3304 3088 2.83      
4 A1 1680 1569 2.23      
5 A1 1403 1311 0.19      
6 A1 1201 1123 0.23      
7 A1 1174 1097 4.08      
8 A1 1033 965 0.79      
9 A1 936 875 2.82      
10 A1 857 801 9.68      
11 A1 745 696 0.03      
12 A2 1209 1130 0.00      
13 A2 1004 938 0.00      
14 A2 980 916 0.00      
15 A2 792 740 0.00      
16 A2 555 519 0.00      
17 B1 3348 3129 3.70      
18 B1 1192 1114 26.19      
19 B1 1094 1022 0.31      
20 B1 799 747 103.41      
21 B1 672 628 1.95      
22 B1 538 503 14.32      
23 B2 3312 3095 10.10      
24 B2 3300 3083 5.66      
25 B2 1401 1309 9.20      
26 B2 1326 1239 0.00      
27 B2 1256 1174 1.67      
28 B2 1009 943 0.02      
29 B2 899 840 0.00      
30 B2 838 783 12.43      

Unscaled Zero Point Vibrational Energy (zpe) 22285.1 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 20823.2 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 CISD/3-21G*
ABC
0.24194 0.17258 0.12800

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.740 0.000 -1.026
C2 -0.740 0.000 -1.026
C3 0.000 1.089 -0.204
C4 0.000 -1.089 -0.204
C5 0.000 0.667 1.259
C6 0.000 -0.667 1.259
H7 1.527 0.000 -1.751
H8 -1.527 0.000 -1.751
H9 0.000 2.119 -0.522
H10 0.000 -2.119 -0.522
H11 0.000 1.346 2.095
H12 0.000 -1.346 2.095

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.47901.55201.55202.49232.49231.07102.38002.30022.30023.47793.4779
C21.47901.55201.55202.49232.49232.38001.07102.30022.30023.47793.4779
C31.55201.55202.17801.52212.28562.43182.43181.07783.22362.31293.3483
C41.55201.55202.17802.28561.52212.43182.43183.22361.07783.34832.3129
C52.49232.49231.52212.28561.33473.44083.44082.29723.30661.07662.1797
C62.49232.49232.28561.52211.33473.44083.44083.30662.29722.17971.0766
H71.07102.38002.43182.43183.44083.44083.05422.88692.88694.35174.3517
H82.38001.07102.43182.43183.44083.44083.05422.88692.88694.35174.3517
H92.30022.30021.07783.22362.29723.30662.88692.88694.23782.72854.3415
H102.30022.30023.22361.07783.30662.29722.88692.88694.23784.34152.7285
H113.47793.47792.31293.34831.07662.17974.35174.35172.72854.34152.6911
H123.47793.47793.34832.31292.17971.07664.35174.35174.34152.72852.6911

picture of Benzvalene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 61.543 C1 C2 C4 61.543
C1 C2 H8 137.341 C1 C3 C2 56.914
C1 C3 C5 108.334 C1 C3 H9 120.947
C1 C4 C2 56.914 C1 C4 C6 108.334
C1 C4 H10 120.947 C2 C1 C3 61.543
C2 C1 C4 61.543 C2 C1 H7 137.341
C2 C3 C5 108.334 C2 C3 H9 120.947
C2 C4 C6 108.334 C2 C4 H10 120.947
C3 C1 C4 89.128 C3 C1 H7 135.181
C3 C2 C4 89.128 C3 C2 H8 135.181
C3 C5 C6 106.083 C3 C5 H11 124.872
C4 C1 H7 135.181 C4 C2 H8 135.181
C4 C6 C5 106.083 C4 C6 H12 124.872
C5 C3 H9 123.240 C5 C6 H12 129.045
C6 C4 H10 123.240 C6 C5 H11 129.045
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability