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All results from a given calculation for C6H4F2 (orthodifluorobenzene)

using model chemistry: QCISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-429.522611
Energy at 298.15K-429.527204
Nuclear repulsion energy346.347370
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 QCISD/6-31G*
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 3240 3085 1.62      
2 A1 3224 3071 10.90      
3 A1 1704 1622 23.56      
4 A1 1591 1515 171.51      
5 A1 1335 1272 76.98      
6 A1 1309 1247 13.37      
7 A1 1198 1141 0.08      
8 A1 1066 1015 5.85      
9 A1 789 751 30.31      
10 A1 585 557 3.79      
11 A1 282 268 0.37      
12 A2 909 866 0.00      
13 A2 834 794 0.00      
14 A2 559 532 0.00      
15 A2 511 486 0.00      
16 A2 190 180 0.00      
17 B1 903 860 5.80      
18 B1 767 730 84.11      
19 B1 452 430 1.08      
20 B1 296 282 0.06      
21 B2 3236 3082 4.50      
22 B2 3211 3058 1.60      
23 B2 1704 1622 6.74      
24 B2 1525 1452 12.50      
25 B2 1313 1250 5.31      
26 B2 1254 1194 30.99      
27 B2 1144 1089 18.37      
28 B2 866 825 14.03      
29 B2 553 527 3.87      
30 B2 442 421 0.41      

Unscaled Zero Point Vibrational Energy (zpe) 18493.6 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 17611.5 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 QCISD/6-31G*
ABC
0.10846 0.07366 0.04387

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.695 -0.534
C2 0.000 -0.695 -0.534
C3 0.000 -1.399 0.662
C4 0.000 -0.699 1.869
C5 0.000 0.699 1.869
C6 0.000 1.399 0.662
F7 0.000 1.351 -1.713
F8 0.000 -1.351 -1.713
H9 0.000 -2.486 0.628
H10 0.000 -1.247 2.808
H11 0.000 1.247 2.808
H12 0.000 2.486 0.628

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C11.38932.41162.77832.40361.38831.34882.36093.38643.86593.38812.1354
C21.38931.38832.40362.77832.41162.36091.34882.13543.38813.86593.3864
C32.41161.38831.39612.42092.79883.63362.37481.08702.15203.40793.8855
C42.77832.40361.39611.39772.42094.12703.64082.17581.08762.16103.4180
C52.40362.77832.42091.39771.39613.64084.12703.41802.16101.08762.1758
C61.38832.41162.79882.42091.39612.37483.63363.88553.40792.15201.0870
F71.34882.36093.63364.12703.64082.37482.70234.49475.21464.52222.6013
F82.36091.34882.37483.64084.12703.63362.70232.60134.52225.21464.4947
H93.38642.13541.08702.17583.41803.88554.49472.60132.50744.32334.9718
H103.86593.38812.15201.08762.16103.40795.21464.52222.50742.49494.3233
H113.38813.86593.40792.16101.08762.15204.52225.21464.32332.49492.5074
H122.13543.38643.88553.41802.17581.08702.60134.49474.97184.32332.5074

picture of orthodifluorobenzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 120.508 C1 C2 F8 119.126
C1 C6 C5 119.370 C1 C6 H12 118.741
C2 C1 C6 120.508 C2 C1 F7 119.126
C2 C3 C4 119.370 C2 C3 H9 118.741
C3 C2 F8 120.366 C3 C4 C5 120.121
C3 C4 H10 119.586 C4 C3 H9 121.889
C4 C5 C6 120.121 C4 C5 H11 120.293
C5 C4 H10 120.293 C5 C6 H12 121.889
C6 C1 F7 120.366 C6 C5 H11 119.586
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability