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 (1,2,4,5-Hexatetraene)

using model chemistry: MP3=FULL/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at MP3=FULL/6-31G**
 hartrees
Energy at 0K-231.436830
Energy at 298.15K-231.440831
HF Energy-230.583909
Nuclear repulsion energy176.424807
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 MP3=FULL/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 3258 3258 0.00      
2 Ag 3237 3237 0.00      
3 Ag 2092 2092 0.00      
4 Ag 1570 1570 0.00      
5 Ag 1458 1458 0.00      
6 Ag 1208 1208 0.00      
7 Ag 1074 1074 0.00      
8 Ag 902 902 0.00      
9 Ag 547 547 0.00      
10 Ag 233 233 0.00      
11 Au 3322 3322 9.00      
12 Au 1055 1055 0.90      
13 Au 938 938 30.79      
14 Au 492 492 4.25      
15 Au 344 344 8.54      
16 Au 75 75 0.19      
17 Bg 3322 3322 0.00      
18 Bg 1057 1057 0.00      
19 Bg 909 909 0.00      
20 Bg 681 681 0.00      
21 Bg 323 323 0.00      
22 Bu 3264 3264 8.59      
23 Bu 3237 3237 14.08      
24 Bu 2105 2105 40.39      
25 Bu 1530 1530 0.76      
26 Bu 1317 1317 12.50      
27 Bu 1135 1135 0.57      
28 Bu 902 902 93.65      
29 Bu 545 545 19.09      
30 Bu 122 122 0.50      

Unscaled Zero Point Vibrational Energy (zpe) 21127.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 21127.1 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 MP3=FULL/6-31G**
ABC
1.06693 0.04545 0.04438

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.331 0.657 0.000
C2 0.331 -0.657 0.000
C3 0.331 1.794 0.000
C4 -0.331 -1.794 0.000
C5 0.992 2.923 0.000
C6 -0.992 -2.923 0.000
H7 -1.412 0.671 0.000
H8 1.412 -0.671 0.000
H9 1.275 3.409 0.922
H10 1.275 3.409 -0.922
H11 -1.275 -3.409 0.922
H12 -1.275 -3.409 -0.922

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.47081.31532.45102.62353.64031.08182.19113.31683.31684.27464.2746
C21.47082.45101.31533.64032.62352.19111.08184.27464.27463.31683.3168
C31.31532.45103.64861.30824.89882.07332.69202.08562.08565.52255.5225
C42.45101.31533.64864.89881.30822.69202.07335.52255.52252.08562.0856
C52.62353.64031.30824.89886.17303.29393.61841.08021.08026.78816.7881
C63.64032.62354.89881.30826.17303.61843.29396.78816.78811.08021.0802
H71.08182.19112.07332.69203.29393.61843.12713.94563.94564.18494.1849
H82.19111.08182.69202.07333.61843.29393.12714.18494.18493.94563.9456
H93.31684.27462.08565.52251.08026.78813.94564.18491.84447.27887.5088
H103.31684.27462.08565.52251.08026.78813.94564.18491.84447.50887.2788
H114.27463.31685.52252.08566.78811.08024.18493.94567.27887.50881.8444
H124.27463.31685.52252.08566.78811.08024.18493.94567.50887.27881.8444

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 123.118 C1 C2 H8 117.458
C1 C3 C5 179.808 C2 C1 C3 123.118
C2 C1 H7 117.458 C2 C4 C6 179.808
C3 C1 H7 119.424 C3 C5 H9 121.380
C3 C5 H10 121.380 C4 C2 H8 119.424
C4 C6 H11 121.380 C4 C6 H12 121.380
H9 C5 H10 117.239 H11 C6 H12 117.239
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability