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All results from a given calculation for C6H4F2 (orthodifluorobenzene)

using model chemistry: CISD/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 CISD/6-311G*
 hartrees
Energy at 0K-429.459443
Energy at 298.15K-429.464467
Nuclear repulsion energy350.008365
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/6-311G*
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 3344 3094 3.21      
2 A1 3329 3080 9.63      
3 A1 1766 1634 33.46      
4 A1 1649 1526 217.82      
5 A1 1384 1281 114.11      
6 A1 1326 1227 5.69      
7 A1 1215 1124 0.01      
8 A1 1100 1018 7.67      
9 A1 819 758 37.46      
10 A1 609 563 4.28      
11 A1 302 280 0.43      
12 A2 993 919 0.00      
13 A2 907 840 0.00      
14 A2 709 656 0.00      
15 A2 576 533 0.00      
16 A2 201 186 0.00      
17 B1 991 917 9.61      
18 B1 818 757 103.26      
19 B1 494 457 3.14      
20 B1 317 293 0.01      
21 B2 3338 3089 5.52      
22 B2 3316 3068 1.09      
23 B2 1769 1636 8.45      
24 B2 1576 1458 17.21      
25 B2 1362 1261 7.71      
26 B2 1300 1203 41.90      
27 B2 1178 1090 21.62      
28 B2 897 830 17.55      
29 B2 579 536 4.30      
30 B2 462 428 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 19312.1 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 17869.5 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 CISD/6-311G*
ABC
0.11044 0.07531 0.04478

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.686 -0.532
C2 0.000 -0.686 -0.532
C3 0.000 -1.385 0.652
C4 0.000 -0.692 1.849
C5 0.000 0.692 1.849
C6 0.000 1.385 0.652
F7 0.000 1.335 -1.690
F8 0.000 -1.335 -1.690
H9 0.000 -2.460 0.618
H10 0.000 -1.236 2.777
H11 0.000 1.236 2.777
H12 0.000 2.460 0.618

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C11.37272.38552.75122.38081.37421.32752.33003.34983.82703.35462.1135
C21.37271.37422.38082.75122.38552.33001.32752.11353.35463.82703.3498
C32.38551.37421.38332.39792.77003.58932.34181.07562.13123.37473.8452
C42.75122.38081.38331.38492.39794.07863.59672.15421.07582.14023.3844
C52.38082.75122.39791.38491.38333.59674.07863.38442.14021.07582.1542
C61.37422.38552.77002.39791.38332.34183.58933.84523.37472.13121.0756
F71.32752.33003.58934.07863.59672.34182.67104.44185.15444.46832.5668
F82.33001.32752.34183.59674.07863.58932.67102.56684.46835.15444.4418
H93.34982.11351.07562.15423.38443.84524.44182.56682.48274.28074.9201
H103.82703.35462.13121.07582.14023.37475.15444.46832.48272.47164.2807
H113.35463.82703.37472.14021.07582.13124.46835.15444.28072.47162.4827
H122.11353.34983.84523.38442.15421.07562.56684.44184.92014.28072.4827

picture of orthodifluorobenzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 120.558 C1 C2 F8 119.274
C1 C6 C5 119.398 C1 C6 H12 118.752
C2 C1 C6 120.558 C2 C1 F7 119.274
C2 C3 C4 119.398 C2 C3 H9 118.752
C3 C2 F8 120.168 C3 C4 C5 120.044
C3 C4 H10 119.620 C4 C3 H9 121.851
C4 C5 C6 120.044 C4 C5 H11 120.336
C5 C4 H10 120.336 C5 C6 H12 121.851
C6 C1 F7 120.168 C6 C5 H11 119.620
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability