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All results from a given calculation for C6H4F2 (orthodifluorobenzene)

using model chemistry: QCISD/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 QCISD/6-311G*
 hartrees
Energy at 0K-429.715770
Energy at 298.15K-429.720414
Nuclear repulsion energy346.654575
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/6-311G*
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 3220 3083 3.11      
2 A1 3205 3068 10.18      
3 A1 1682 1611 27.98      
4 A1 1574 1507 187.28      
5 A1 1322 1266 94.37      
6 A1 1288 1233 7.58      
7 A1 1176 1126 0.03      
8 A1 1054 1009 6.89      
9 A1 781 748 32.45      
10 A1 582 557 3.88      
11 A1 289 277 0.37      
12 A2 888 850 0.00      
13 A2 831 796 0.00      
14 A2 614 588 0.00      
15 A2 501 480 0.00      
16 A2 188 180 0.00      
17 B1 898 860 9.51      
18 B1 764 731 95.18      
19 B1 460 441 3.18      
20 B1 297 285 0.01      
21 B2 3215 3078 6.07      
22 B2 3192 3056 1.18      
23 B2 1686 1614 7.64      
24 B2 1507 1442 14.18      
25 B2 1301 1246 5.64      
26 B2 1242 1189 34.95      
27 B2 1128 1080 20.91      
28 B2 858 822 15.67      
29 B2 553 529 3.86      
30 B2 441 422 0.36      

Unscaled Zero Point Vibrational Energy (zpe) 18367.6 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 17585.2 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/6-311G*
ABC
0.10837 0.07387 0.04393

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.695 -0.539
C2 0.000 -0.695 -0.539
C3 0.000 -1.400 0.660
C4 0.000 -0.700 1.870
C5 0.000 0.700 1.870
C6 0.000 1.400 0.660
F7 0.000 1.351 -1.709
F8 0.000 -1.351 -1.709
H9 0.000 -2.487 0.626
H10 0.000 -1.249 2.808
H11 0.000 1.249 2.808
H12 0.000 2.487 0.626

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C11.39102.41402.78322.40831.39021.34112.35733.38853.87053.39232.1366
C21.39101.39022.40832.78322.41402.35731.34112.13663.39233.87053.3885
C32.41401.39021.39792.42342.80013.63012.36891.08702.15383.41053.8867
C42.78322.40831.39791.39942.42344.12423.63702.17681.08732.16273.4202
C52.40832.78322.42341.39941.39793.63704.12423.42022.16271.08732.1768
C61.39022.41402.80012.42341.39792.36893.63013.88673.41052.15381.0870
F71.34112.35733.63014.12423.63702.36892.70214.49215.21154.51802.5964
F82.35731.34112.36893.63704.12423.63012.70212.59644.51805.21154.4921
H93.38852.13661.08702.17683.42023.88674.49212.59642.50864.32574.9730
H103.87053.39232.15381.08732.16273.41055.21154.51802.50862.49734.3257
H113.39233.87053.41052.16271.08732.15384.51805.21154.32572.49732.5086
H122.13663.38853.88673.42022.17681.08702.59644.49214.97304.32572.5086

picture of orthodifluorobenzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 120.452 C1 C2 F8 119.263
C1 C6 C5 119.484 C1 C6 H12 118.690
C2 C1 C6 120.452 C2 C1 F7 119.263
C2 C3 C4 119.484 C2 C3 H9 118.690
C3 C2 F8 120.285 C3 C4 C5 120.064
C3 C4 H10 119.615 C4 C3 H9 121.826
C4 C5 C6 120.064 C4 C5 H11 120.321
C5 C4 H10 120.321 C5 C6 H12 121.826
C6 C1 F7 120.285 C6 C5 H11 119.615
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability