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All results from a given calculation for C6H4F2 (orthodifluorobenzene)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-430.116963
Energy at 298.15K-430.122682
Nuclear repulsion energy350.326811
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 CBS-Q
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3391 3391 3.67      
2 A1 3374 3374 13.19      
3 A1 1814 1814 34.11      
4 A1 1693 1693 216.41      
5 A1 1416 1416 128.37      
6 A1 1316 1316 4.11      
7 A1 1207 1207 0.60      
8 A1 1124 1124 7.74      
9 A1 837 837 41.50      
10 A1 625 625 5.18      
11 A1 307 307 0.50      
12 A2 1091 1091 0.00      
13 A2 969 969 0.00      
14 A2 790 790 0.00      
15 A2 616 616 0.00      
16 A2 211 211 0.00      
17 B1 1059 1059 8.37      
18 B1 853 853 85.99      
19 B1 516 516 1.19      
20 B1 330 330 0.37      
21 B2 3386 3386 8.77      
22 B2 3359 3359 1.54      
23 B2 1816 1816 8.16      
24 B2 1619 1619 17.01      
25 B2 1401 1401 8.86      
26 B2 1334 1334 46.86      
27 B2 1208 1208 18.07      
28 B2 919 919 19.57      
29 B2 594 594 5.23      
30 B2 475 475 0.36      

Unscaled Zero Point Vibrational Energy (zpe) 19822.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 19822.8 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 CBS-Q
ABC
0.10828 0.07360 0.04382

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.684 -0.532
C2 0.000 -0.684 -0.532
C3 0.000 -1.385 0.649
C4 0.000 -0.693 1.847
C5 0.000 0.693 1.847
C6 0.000 1.385 0.649
F7 0.000 1.331 -1.686
F8 0.000 -1.331 -1.686
H9 0.000 -2.458 0.614
H10 0.000 -1.236 2.775
H11 0.000 1.236 2.775
H12 0.000 2.458 0.614

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C11.36892.38232.74862.37881.37281.32362.32303.34503.82353.35202.1116
C21.36891.37282.37882.74862.38232.32301.32362.11163.35203.82353.3450
C32.38231.37281.38352.39782.76923.58212.33631.07432.13073.37403.8431
C42.74862.37881.38351.38502.39784.07213.59092.15391.07492.13983.3837
C52.37882.74862.39781.38501.38353.59094.07213.38372.13981.07492.1539
C61.37282.38232.76922.39781.38352.33633.58213.84313.37402.13071.0743
F71.32362.32303.58214.07213.59092.33632.66244.43315.14704.46222.5616
F82.32301.32362.33633.59094.07213.58212.66242.56164.46225.14704.4331
H93.34502.11161.07432.15393.38373.84314.43312.56162.48284.27974.9167
H103.82353.35202.13071.07492.13983.37405.14704.46222.48282.47164.2797
H113.35203.82353.37402.13981.07492.13074.46225.14704.27972.47162.4828
H122.11163.34503.84313.38372.15391.07432.56164.43314.91674.27972.4828

picture of orthodifluorobenzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 120.665 C1 C2 F8 119.251
C1 C6 C5 119.319 C1 C6 H12 118.777
C2 C1 C6 120.665 C2 C1 F7 119.251
C2 C3 C4 119.319 C2 C3 H9 118.777
C3 C2 F8 120.084 C3 C4 C5 120.016
C3 C4 H10 119.626 C4 C3 H9 121.904
C4 C5 C6 120.016 C4 C5 H11 120.358
C5 C4 H10 120.358 C5 C6 H12 121.904
C6 C1 F7 120.084 C6 C5 H11 119.626
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability