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: CCSD=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 CCSD=FULL/6-31G*
 hartrees
Energy at 0K-231.399403
Energy at 298.15K-231.403357
HF Energy-230.571601
Nuclear repulsion energy175.844470
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 CCSD=FULL/6-31G*
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 3183 3023 0.00      
2 Ag 3167 3008 0.00      
3 Ag 2070 1966 0.00      
4 Ag 1546 1468 0.00      
5 Ag 1443 1370 0.00      
6 Ag 1200 1139 0.00      
7 Ag 1065 1011 0.00      
8 Ag 896 851 0.00      
9 Ag 540 513 0.00      
10 Ag 233 221 0.00      
11 Au 3243 3080 10.28      
12 Au 1050 998 0.26      
13 Au 924 878 33.09      
14 Au 489 464 4.04      
15 Au 345 328 9.43      
16 Au 76 72 0.24      
17 Bg 3243 3080 0.00      
18 Bg 1052 999 0.00      
19 Bg 905 859 0.00      
20 Bg 676 642 0.00      
21 Bg 322 306 0.00      
22 Bu 3189 3029 8.36      
23 Bu 3168 3009 17.86      
24 Bu 2079 1974 43.64      
25 Bu 1506 1430 0.28      
26 Bu 1310 1244 9.62      
27 Bu 1124 1067 0.90      
28 Bu 897 852 101.27      
29 Bu 541 514 19.70      
30 Bu 122 116 0.57      

Unscaled Zero Point Vibrational Energy (zpe) 20799.6 cm-1
Scaled (by 0.9498) Zero Point Vibrational Energy (zpe) 19755.4 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 CCSD=FULL/6-31G*
ABC
1.05973 0.04520 0.04414

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.331 0.658 0.000
C2 0.331 -0.658 0.000
C3 0.331 1.798 0.000
C4 -0.331 -1.798 0.000
C5 0.993 2.931 0.000
C6 -0.993 -2.931 0.000
H7 -1.421 0.669 0.000
H8 1.421 -0.669 0.000
H9 1.281 3.423 0.928
H10 1.281 3.423 -0.928
H11 -1.281 -3.423 0.928
H12 -1.281 -3.423 -0.928

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.47251.31862.45612.63063.64921.09052.19753.33243.33244.29154.2915
C21.47252.45611.31863.64922.63062.19751.09054.29154.29153.33243.3324
C31.31862.45613.65701.31204.91102.08472.69732.09832.09835.54275.5427
C42.45611.31863.65704.91101.31202.69732.08475.54275.54272.09832.0983
C52.63063.64921.31204.91106.18913.30873.62481.08881.08886.81216.8121
C63.64922.63064.91101.31206.18913.62483.30876.81216.81211.08881.0888
H71.09052.19752.08472.69733.30873.62483.14143.96843.96844.19814.1981
H82.19751.09052.69732.08473.62483.30873.14144.19814.19813.96843.9684
H93.33244.29152.09835.54271.08886.81213.96844.19811.85537.30987.5416
H103.33244.29152.09835.54271.08886.81213.96844.19811.85537.54167.3098
H114.29153.33245.54272.09836.81211.08884.19813.96847.30987.54161.8553
H124.29153.33245.54272.09836.81211.08884.19813.96847.54167.30981.8553

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 123.188 C1 C2 H8 117.272
C1 C3 C5 179.784 C2 C1 C3 123.188
C2 C1 H7 117.272 C2 C4 C6 179.784
C3 C1 H7 119.540 C3 C5 H9 121.572
C3 C5 H10 121.572 C4 C2 H8 119.540
C4 C6 H11 121.572 C4 C6 H12 121.572
H9 C5 H10 116.855 H11 C6 H12 116.855
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability