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All results from a given calculation for C6H4F2 (orthodifluorobenzene)

using model chemistry: CISD/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 CISD/6-31G*
 hartrees
Energy at 0K-429.287979
Energy at 298.15K-429.292945
Nuclear repulsion energy349.471954
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 CISD/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 3360 3110 1.74      
2 A1 3344 3096 9.66      
3 A1 1782 1650 29.24      
4 A1 1662 1539 202.21      
5 A1 1394 1291 97.95      
6 A1 1342 1242 7.20      
7 A1 1233 1142 0.00      
8 A1 1110 1028 6.50      
9 A1 825 764 34.52      
10 A1 610 565 4.04      
11 A1 296 274 0.42      
12 A2 1005 931 0.00      
13 A2 905 838 0.00      
14 A2 659 610 0.00      
15 A2 577 534 0.00      
16 A2 202 187 0.00      
17 B1 992 918 7.33      
18 B1 820 759 90.93      
19 B1 487 451 1.11      
20 B1 315 291 0.16      
21 B2 3355 3106 3.62      
22 B2 3330 3083 1.40      
23 B2 1783 1651 7.61      
24 B2 1590 1472 15.82      
25 B2 1371 1269 7.85      
26 B2 1310 1213 36.74      
27 B2 1189 1101 18.74      
28 B2 902 835 15.60      
29 B2 578 535 4.23      
30 B2 462 428 0.38      

Unscaled Zero Point Vibrational Energy (zpe) 19395.2 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 17956.1 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 CISD/6-31G*
ABC
0.11032 0.07501 0.04465

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.686 -0.529
C2 0.000 -0.686 -0.529
C3 0.000 -1.386 0.654
C4 0.000 -0.692 1.850
C5 0.000 0.692 1.850
C6 0.000 1.386 0.654
F7 0.000 1.336 -1.694
F8 0.000 -1.336 -1.694
H9 0.000 -2.461 0.619
H10 0.000 -1.236 2.779
H11 0.000 1.236 2.779
H12 0.000 2.461 0.619

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C11.37272.38562.74962.37901.37371.33442.33443.35033.82613.35362.1138
C21.37271.37372.37902.74962.38562.33441.33442.11383.35363.82613.3503
C32.38561.37371.38292.39782.77123.59462.34831.07602.13123.37493.8468
C42.74962.37901.38291.38452.39784.08393.60242.15491.07652.14023.3850
C52.37902.74962.39781.38451.38293.60244.08393.38502.14021.07652.1549
C61.37372.38562.77122.39781.38292.34833.59463.84683.37492.13121.0760
F71.33442.33443.59464.08393.60242.34832.67284.44675.16034.47482.5725
F82.33441.33442.34833.60244.08393.59462.67282.57254.47485.16034.4467
H93.35032.11381.07602.15493.38503.84684.44672.57252.48354.28154.9221
H103.82613.35362.13121.07652.14023.37495.16034.47482.48352.47134.2815
H113.35363.82613.37492.14021.07652.13124.47485.16034.28152.47132.4835
H122.11383.35033.84683.38502.15491.07602.57254.44674.92214.28152.4835

picture of orthodifluorobenzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 120.598 C1 C2 F8 119.153
C1 C6 C5 119.313 C1 C6 H12 118.775
C2 C1 C6 120.598 C2 C1 F7 119.153
C2 C3 C4 119.313 C2 C3 H9 118.775
C3 C2 F8 120.248 C3 C4 C5 120.089
C3 C4 H10 119.597 C4 C3 H9 121.911
C4 C5 C6 120.089 C4 C5 H11 120.315
C5 C4 H10 120.315 C5 C6 H12 121.911
C6 C1 F7 120.248 C6 C5 H11 119.597
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability