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: MP4/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at MP4/cc-pVDZ
 hartrees
Energy at 0K-231.454556
Energy at 298.15K-231.458322
HF Energy-230.589253
Nuclear repulsion energy173.972891
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 MP4/cc-pVDZ
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 3164 3059        
2 Ag 3141 3037        
3 Ag 1995 1929        
4 Ag 1490 1441        
5 Ag 1390 1344        
6 Ag 1162 1123        
7 Ag 1026 992        
8 Ag 843 815        
9 Ag 521 504        
10 Ag 219 211        
11 Au 3234 3127        
12 Au 1006 973        
13 Au 898 869        
14 Au 472 457        
15 Au 321 311        
16 Au 76 74        
17 Bg 3234 3127        
18 Bg 1008 975        
19 Bg 859 831        
20 Bg 647 626        
21 Bg 297 287        
22 Bu 3171 3066        
23 Bu 3141 3037        
24 Bu 2008 1942        
25 Bu 1452 1404        
26 Bu 1247 1205        
27 Bu 1079 1043        
28 Bu 844 816        
29 Bu 513 496        
30 Bu 115 112        

Unscaled Zero Point Vibrational Energy (zpe) 20285.7 cm-1
Scaled (by 0.9669) Zero Point Vibrational Energy (zpe) 19614.2 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 MP4/cc-pVDZ
ABC
1.04186 0.04422 0.04319

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.334 0.660 0.000
C2 0.334 -0.660 0.000
C3 0.334 1.818 0.000
C4 -0.334 -1.818 0.000
C5 1.002 2.966 0.000
C6 -1.002 -2.966 0.000
H7 -1.434 0.675 0.000
H8 1.434 -0.675 0.000
H9 1.287 3.458 0.941
H10 1.287 3.458 -0.941
H11 -1.287 -3.458 0.941
H12 -1.287 -3.458 -0.941

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.47991.33602.47842.66463.68761.10012.21483.36683.36684.33044.3304
C21.47992.47841.33603.68762.66462.21481.10014.33044.33043.36683.3668
C31.33602.47843.69661.32864.96692.10492.72442.11722.11725.59855.5985
C42.47841.33603.69664.96691.32862.72442.10495.59855.59852.11722.1172
C52.66463.68761.32864.96696.26153.34433.66601.09891.09896.88406.8840
C63.68762.66464.96691.32866.26153.66603.34436.88406.88401.09891.0989
H71.10012.21482.10492.72443.34433.66603.16874.00414.00414.24044.2404
H82.21481.10012.72442.10493.66603.34433.16874.24044.24044.00414.0041
H93.36684.33042.11725.59851.09896.88404.00414.24041.88117.37897.6149
H103.36684.33042.11725.59851.09896.88404.00414.24041.88117.61497.3789
H114.33043.36685.59852.11726.88401.09894.24044.00417.37897.61491.8811
H124.33043.36685.59852.11726.88401.09894.24044.00417.61497.37891.8811

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 123.241 C1 C2 H8 117.530
C1 C3 C5 179.742 C2 C1 C3 123.241
C2 C1 H7 117.530 C2 C4 C6 179.742
C3 C1 H7 119.228 C3 C5 H9 121.139
C3 C5 H10 121.139 C4 C2 H8 119.228
C4 C6 H11 121.139 C4 C6 H12 121.139
H9 C5 H10 117.722 H11 C6 H12 117.722
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability