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: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-230.864325
Energy at 298.15K-230.867381
Nuclear repulsion energy188.030459
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 B3PW91/6-311G*
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 3210 3090 7.14      
2 A1 3185 3066 6.72      
3 A1 2025 1949 0.04      
4 A1 1495 1440 0.34      
5 A1 1327 1277 1.36      
6 A1 1167 1123 0.03      
7 A1 1086 1046 24.65      
8 A1 1007 969 8.01      
9 A1 622 599 0.31      
10 A2 961 925 0.00      
11 A2 866 834 0.00      
12 A2 602 579 0.00      
13 A2 451 434 0.00      
14 B1 913 879 0.04      
15 B1 748 720 91.73      
16 B1 392 377 6.76      
17 B2 3206 3086 38.36      
18 B2 3169 3050 1.21      
19 B2 1485 1429 13.87      
20 B2 1437 1384 5.19      
21 B2 1276 1229 0.13      
22 B2 1114 1072 2.19      
23 B2 843 812 30.78      
24 B2 418 402 109.71      

Unscaled Zero Point Vibrational Energy (zpe) 16501.3 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 15885.8 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 B3PW91/6-311G*
ABC
0.23603 0.19124 0.10564

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.622 -1.231
C2 0.000 -0.622 -1.231
C3 0.000 1.458 -0.134
C4 0.000 -1.458 -0.134
C5 0.000 0.701 1.053
C6 0.000 -0.701 1.053
H7 0.000 2.542 -0.136
H8 0.000 -2.542 -0.136
H9 0.000 1.226 2.006
H10 0.000 -1.226 2.006

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10
C11.24471.37952.35202.28622.64042.21043.34883.29283.7275
C21.24472.35201.37952.64042.28623.34882.21043.72753.2928
C31.37952.35202.91571.40792.46371.08433.99992.15193.4320
C42.35201.37952.91572.46371.40793.99991.08433.43202.1519
C52.28622.64041.40792.46371.40202.19183.45431.08722.1493
C62.64042.28622.46371.40791.40203.45432.19182.14931.0872
H72.21043.34881.08433.99992.19183.45435.08422.51364.3339
H83.34882.21043.99991.08433.45432.19185.08424.33392.5136
H93.29283.72752.15193.43201.08722.14932.51364.33392.4517
H103.72753.29283.43202.15192.14931.08724.33392.51362.4517

picture of Benzyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 127.276 C1 C3 C5 110.206
C1 C3 H7 127.170 C2 C1 C3 127.276
C2 C4 C6 110.206 C2 C4 H8 127.170
C3 C5 C6 122.517 C3 C5 H9 118.620
C4 C6 C5 122.517 C4 C6 H10 118.620
C5 C3 H7 122.623 C5 C6 H10 118.863
C6 C4 H8 122.623 C6 C5 H9 118.863
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.001      
2 C -0.001      
3 C -0.223      
4 C -0.223      
5 C -0.212      
6 C -0.212      
7 H 0.221      
8 H 0.221      
9 H 0.214      
10 H 0.214      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.698 1.698
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.808 0.000 0.000
y 0.000 -28.770 0.000
z 0.000 0.000 -34.168
Traceless
 xyz
x -6.339 0.000 0.000
y 0.000 7.218 0.000
z 0.000 0.000 -0.879
Polar
3z2-r2-1.759
x2-y2-9.038
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.830 0.000 0.000
y 0.000 11.503 0.000
z 0.000 0.000 9.512


<r2> (average value of r2) Å2
<r2> 112.763
(<r2>)1/2 10.619