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All results from a given calculation for C6H4 (Benzyne)

using model chemistry: MP4/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-228.709238
Energy at 298.15K-228.712436
Nuclear repulsion energy184.864904
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 MP4/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3182 3086        
2 A1 3157 3061        
3 A1 1845 1789        
4 A1 1462 1418        
5 A1 1281 1242        
6 A1 1179 1144        
7 A1 1014 983        
8 A1 967 938        
9 A1 636 616        
10 A2 906 879        
11 A2 843 818        
12 A2 633 614        
13 A2 475 461        
14 B1 884 857        
15 B1 731 709        
16 B1 392 381        
17 B2 3177 3081        
18 B2 3140 3045        
19 B2 1455 1411        
20 B2 1408 1365        
21 B2 1253 1216        
22 B2 1097 1064        
23 B2 906 879        
24 B2 598 580        

Unscaled Zero Point Vibrational Energy (zpe) 16310.7 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 15818.1 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 MP4/3-21G
ABC
0.22594 0.18608 0.10204

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.639 -1.263
C2 0.000 -0.639 -1.263
C3 0.000 1.475 -0.129
C4 0.000 -1.475 -0.129
C5 0.000 0.714 1.076
C6 0.000 -0.714 1.076
H7 0.000 2.563 -0.131
H8 0.000 -2.563 -0.131
H9 0.000 1.242 2.030
H10 0.000 -1.242 2.030

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10
C11.27711.40902.39862.33982.70142.23303.39613.34823.7925
C21.27712.39861.40902.70142.33983.39612.23303.79253.3482
C31.40902.39862.95041.42542.49871.08814.03852.17223.4710
C42.39861.40902.95042.49871.42544.03851.08813.47102.1722
C52.33982.70141.42542.49871.42742.20843.49211.09122.1764
C62.70142.33982.49871.42541.42743.49212.20842.17641.0912
H72.23303.39611.08814.03852.20843.49215.12662.53304.3763
H83.39612.23304.03851.08813.49212.20845.12664.37632.5330
H93.34823.79252.17223.47101.09122.17642.53304.37632.4843
H103.79253.34823.47102.17222.17641.09124.37632.53302.4843

picture of Benzyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 126.428 C1 C3 C5 111.280
C1 C3 H7 126.346 C2 C1 C3 126.428
C2 C4 C6 111.280 C2 C4 H8 126.346
C3 C5 C6 122.292 C3 C5 H9 118.742
C4 C6 C5 122.292 C4 C6 H10 118.742
C5 C3 H7 122.374 C5 C6 H10 118.967
C6 C4 H8 122.374 C6 C5 H9 118.967
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability