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 C6H4 (Benzyne)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-230.483247
Energy at 298.15K-230.486721
Nuclear repulsion energy188.801741
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 CBS-Q
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3393 3393 6.37      
2 A1 3356 3356 15.75      
3 A1 2210 2210 0.04      
4 A1 1601 1601 0.10      
5 A1 1395 1395 0.40      
6 A1 1238 1238 0.74      
7 A1 1086 1086 28.86      
8 A1 1074 1074 6.93      
9 A1 667 667 0.83      
10 A2 1085 1085 0.00      
11 A2 963 963 0.00      
12 A2 627 627 0.00      
13 A2 432 432 0.00      
14 B1 1037 1037 0.03      
15 B1 834 834 72.22      
16 B1 428 428 5.71      
17 B2 3390 3390 42.98      
18 B2 3337 3337 4.96      
19 B2 1643 1643 24.42      
20 B2 1535 1535 3.61      
21 B2 1365 1365 0.03      
22 B2 1206 1206 1.08      
23 B2 895 895 32.97      
24 B2 295 295 195.96      

Unscaled Zero Point Vibrational Energy (zpe) 17544.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 17544.0 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 CBS-Q
ABC
0.23144 0.18741 0.10356

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.613 -1.228
C2 0.000 -0.613 -1.228
C3 0.000 1.455 -0.128
C4 0.000 -1.455 -0.128
C5 0.000 0.706 1.046
C6 0.000 -0.706 1.046
H7 0.000 2.531 -0.134
H8 0.000 -2.531 -0.134
H9 0.000 1.219 1.995
H10 0.000 -1.219 1.995

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10
C11.22521.38532.34202.27582.62842.20793.32813.27953.7072
C21.22522.34201.38532.62842.27583.32812.20793.70723.2795
C31.38532.34202.91041.39312.45941.07563.98602.13633.4150
C42.34201.38532.91042.45941.39313.98601.07563.41502.1363
C52.27582.62841.39312.45941.41152.17353.44511.07912.1464
C62.62842.27582.45941.39311.41153.44512.17352.14641.0791
H72.20793.32811.07563.98602.17353.44515.06162.50084.3127
H83.32812.20793.98601.07563.44512.17355.06164.31272.5008
H93.27953.70722.13633.41501.07912.14642.50084.31272.4390
H103.70723.27953.41502.13632.14641.07914.31272.50082.4390

picture of Benzyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 127.461 C1 C3 C5 109.991
C1 C3 H7 127.130 C2 C1 C3 127.461
C2 C4 C6 109.991 C2 C4 H8 127.130
C3 C5 C6 122.547 C3 C5 H9 119.023
C4 C6 C5 122.547 C4 C6 H10 119.023
C5 C3 H7 122.879 C5 C6 H10 118.429
C6 C4 H8 122.879 C6 C5 H9 118.429
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability