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

using model chemistry: CCD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at CCD/3-21G*
 hartrees
Energy at 0K-229.863458
Energy at 298.15K-229.867304
HF Energy-229.287965
Nuclear repulsion energy174.973160
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 CCD/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 Ag 3127 2991 0.00      
2 Ag 3117 2982 0.00      
3 Ag 2021 1933 0.00      
4 Ag 1552 1485 0.00      
5 Ag 1451 1388 0.00      
6 Ag 1173 1122 0.00      
7 Ag 1027 982 0.00      
8 Ag 941 900 0.00      
9 Ag 533 510 0.00      
10 Ag 214 205 0.00      
11 Au 3183 3045 12.95      
12 Au 1093 1045 0.19      
13 Au 932 892 40.48      
14 Au 489 467 5.61      
15 Au 300 287 12.92      
16 Au 71 68 0.25      
17 Bg 3183 3045 0.00      
18 Bg 1094 1046 0.00      
19 Bg 918 878 0.00      
20 Bg 682 652 0.00      
21 Bg 281 269 0.00      
22 Bu 3135 2998 8.97      
23 Bu 3118 2982 12.85      
24 Bu 2038 1949 9.36      
25 Bu 1539 1472 0.32      
26 Bu 1342 1283 2.33      
27 Bu 1107 1059 0.94      
28 Bu 942 901 108.75      
29 Bu 524 501 19.11      
30 Bu 116 111 0.82      

Unscaled Zero Point Vibrational Energy (zpe) 20620.9 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 19723.9 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 CCD/3-21G*
ABC
1.04724 0.04472 0.04366

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.333 0.666 0.000
C2 0.333 -0.666 0.000
C3 0.333 1.809 0.000
C4 -0.333 -1.809 0.000
C5 1.001 2.944 0.000
C6 -1.001 -2.944 0.000
H7 -1.426 0.672 0.000
H8 1.426 -0.672 0.000
H9 1.293 3.441 0.926
H10 1.293 3.441 -0.926
H11 -1.293 -3.441 0.926
H12 -1.293 -3.441 -0.926

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.48991.32332.47522.64033.67161.09262.21053.34693.34694.31814.3181
C21.48992.47521.32333.67162.64032.21051.09264.31814.31813.34693.3469
C31.32332.47523.67901.31714.93712.09512.71082.10742.10745.57355.5735
C42.47521.32333.67904.93711.31712.71082.09515.57355.57352.10742.1074
C52.64033.67161.31714.93716.21973.32503.64101.09071.09076.84766.8476
C63.67162.64034.93711.31716.21973.64103.32506.84766.84761.09071.0907
H71.09262.21052.09512.71083.32503.64103.15293.98983.98984.21784.2178
H82.21051.09262.71082.09513.64103.32503.15294.21784.21783.98983.9898
H93.34694.31812.10745.57351.09076.84763.98984.21781.85267.35147.5812
H103.34694.31812.10745.57351.09076.84763.98984.21781.85267.58127.3514
H114.31813.34695.57352.10746.84761.09074.21783.98987.35147.58121.8526
H124.31813.34695.57352.10746.84761.09074.21783.98987.58127.35141.8526

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 123.141 C1 C2 H8 116.892
C1 C3 C5 179.799 C2 C1 C3 123.141
C2 C1 H7 116.892 C2 C4 C6 179.799
C3 C1 H7 119.968 C3 C5 H9 121.870
C3 C5 H10 121.870 C4 C2 H8 119.968
C4 C6 H11 121.870 C4 C6 H12 121.870
H9 C5 H10 116.260 H11 C6 H12 116.260
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability