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All results from a given calculation for C6H4 (Benzyne)

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 C2V 1A1
Energy calculated at CCD/3-21G
 hartrees
Energy at 0K-228.676467
Energy at 298.15K-228.679798
Nuclear repulsion energy185.691780
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 A1 3205 3117 2.95      
2 A1 3176 3088 4.16      
3 A1 1930 1877 6.87      
4 A1 1488 1447 1.45      
5 A1 1296 1260 1.77      
6 A1 1182 1149 0.15      
7 A1 1019 991 16.86      
8 A1 990 962 3.28      
9 A1 646 628 0.00      
10 A2 936 910 0.00      
11 A2 866 842 0.00      
12 A2 677 658 0.00      
13 A2 486 473 0.00      
14 B1 915 890 0.00      
15 B1 744 724 84.43      
16 B1 398 387 6.20      
17 B2 3201 3113 20.63      
18 B2 3160 3072 0.70      
19 B2 1505 1464 1.77      
20 B2 1443 1403 11.40      
21 B2 1269 1234 2.19      
22 B2 1124 1093 0.05      
23 B2 971 944 4.10      
24 B2 660 641 2.67      

Unscaled Zero Point Vibrational Energy (zpe) 16642.9 cm-1
Scaled (by 0.9723) Zero Point Vibrational Energy (zpe) 16181.9 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
0.22783 0.18786 0.10296

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.631 -1.258
C2 0.000 -0.631 -1.258
C3 0.000 1.468 -0.128
C4 0.000 -1.468 -0.128
C5 0.000 0.713 1.071
C6 0.000 -0.713 1.071
H7 0.000 2.554 -0.134
H8 0.000 -2.554 -0.134
H9 0.000 1.239 2.025
H10 0.000 -1.239 2.025

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10
C11.26251.40582.38382.32992.68882.22743.37793.33883.7782
C21.26252.38381.40582.68882.32993.37792.22743.77823.3388
C31.40582.38382.93581.41642.48901.08624.02202.16563.4587
C42.38381.40582.93582.48901.41644.02201.08623.45872.1656
C52.32992.68881.41642.48901.42692.19953.48231.08962.1730
C62.68882.32992.48901.41641.42693.48232.19952.17301.0896
H72.22743.37791.08624.02202.19953.48235.10812.52804.3640
H83.37792.22744.02201.08623.48232.19955.10814.36402.5280
H93.33883.77822.16563.45871.08962.17302.52804.36402.4772
H103.77823.33883.45872.16562.17301.08964.36402.52802.4772

picture of Benzyne state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 126.523 C1 C3 C5 111.292
C1 C3 H7 126.239 C2 C1 C3 126.523
C2 C4 C6 111.292 C2 C4 H8 126.239
C3 C5 C6 122.185 C3 C5 H9 119.001
C4 C6 C5 122.185 C4 C6 H10 119.001
C5 C3 H7 122.469 C5 C6 H10 118.814
C6 C4 H8 122.469 C6 C5 H9 118.814
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability