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All results from a given calculation for C6H6 (1,2,4,5-Hexatetraene)

using model chemistry: MP2/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at MP2/CEP-121G
 hartrees
Energy at 0K-36.716592
Energy at 298.15K-36.720488
HF Energy-36.195888
Nuclear repulsion energy88.001210
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 MP2/CEP-121G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3102 3028 0.00      
2 Ag 3078 3004 0.00      
3 Ag 1931 1884 0.00      
4 Ag 1506 1470 0.00      
5 Ag 1408 1374 0.00      
6 Ag 1166 1138 0.00      
7 Ag 1015 991 0.00      
8 Ag 913 891 0.00      
9 Ag 518 505 0.00      
10 Ag 219 214 0.00      
11 Au 3177 3101 21.36      
12 Au 1057 1031 0.13      
13 Au 891 870 40.74      
14 Au 478 467 3.82      
15 Au 328 320 22.60      
16 Au 73 72 0.22      
17 Bg 3177 3101 0.00      
18 Bg 1059 1034 0.00      
19 Bg 912 890 0.00      
20 Bg 678 662 0.00      
21 Bg 311 304 0.00      
22 Bu 3109 3034 14.95      
23 Bu 3079 3005 29.50      
24 Bu 1942 1895 32.33      
25 Bu 1494 1458 0.22      
26 Bu 1286 1255 4.64      
27 Bu 1051 1026 3.33      
28 Bu 914 892 135.86      
29 Bu 518 506 28.67      
30 Bu 115 112 1.00      

Unscaled Zero Point Vibrational Energy (zpe) 20251.6 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 19765.6 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 MP2/CEP-121G
ABC
1.02612 0.04340 0.04238

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.340 0.669 0.000
C2 0.340 -0.669 0.000
C3 0.340 1.834 0.000
C4 -0.340 -1.834 0.000
C5 1.018 2.993 0.000
C6 -1.018 -2.993 0.000
H7 -1.437 0.677 0.000
H8 1.437 -0.677 0.000
H9 1.306 3.484 0.935
H10 1.306 3.484 -0.935
H11 -1.306 -3.484 0.935
H12 -1.306 -3.484 -0.935

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.50031.34902.50322.69163.72401.09702.22843.39213.39214.36504.3650
C21.50032.50321.34903.72402.69162.22841.09704.36504.36503.39213.3921
C31.34902.50323.73101.34265.01452.12022.74022.12812.12815.64505.6450
C42.50321.34903.73105.01451.34262.74022.12025.64505.64502.12812.1281
C52.69163.72401.34265.01456.32253.37503.69321.09461.09466.94436.9443
C63.72402.69165.01451.34266.32253.69323.37506.94436.94431.09461.0946
H71.09702.22842.12022.74023.37503.69323.17604.03424.03424.26654.2665
H82.22841.09702.74022.12023.69323.37503.17604.26654.26654.03424.0342
H93.39214.36502.12815.64501.09466.94434.03424.26651.87007.44127.6726
H103.39214.36502.12815.64501.09466.94434.03424.26651.87007.67267.4412
H114.36503.39215.64502.12816.94431.09464.26654.03427.44127.67261.8700
H124.36503.39215.64502.12816.94431.09464.26654.03427.67267.44121.8700

picture of 1,2,4,5-Hexatetraene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 122.842 C1 C2 H8 117.332
C1 C3 C5 179.870 C2 C1 C3 122.842
C2 C1 H7 117.332 C2 C4 C6 179.870
C3 C1 H7 119.826 C3 C5 H9 121.326
C3 C5 H10 121.326 C4 C2 H8 119.826
C4 C6 H11 121.326 C4 C6 H12 121.326
H9 C5 H10 117.347 H11 C6 H12 117.347
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability