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All results from a given calculation for C6H4F2 (1,4-difluorobenzene)

using model chemistry: PM6

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at PM6
 hartrees
Energy at 0K 
Energy at 298.15K-0.113302
HF Energy-0.113302
Nuclear repulsion energy218.748613
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 PM6
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 2762 2935 0.00      
2 Ag 1641 1744 0.00      
3 Ag 1433 1522 0.00      
4 Ag 1200 1274 0.00      
5 Ag 970 1031 0.00      
6 Ag 427 454 0.00      
7 Au 967 1027 0.00      
8 Au 362 385 0.00      
9 B1g 879 934 0.00      
10 B1u 2746 2917 138.85      
11 B1u 1548 1644 205.21      
12 B1u 1263 1342 19.98      
13 B1u 1056 1122 21.68      
14 B1u 729 775 0.57      
15 B2g 955 1014 0.00      
16 B2g 631 671 0.00      
17 B2g 330 351 0.00      
18 B2u 2754 2926 453.40      
19 B2u 1478 1570 0.14      
20 B2u 1205 1281 27.91      
21 B2u 1075 1142 10.17      
22 B2u 326 346 2.68      
23 B3g 2747 2918 0.00      
24 B3g 1651 1754 0.00      
25 B3g 1273 1353 0.00      
26 B3g 602 639 0.00      
27 B3g 428 455 0.00      
28 B3u 869 924 151.70      
29 B3u 505 537 10.37      
30 B3u 139 147 2.51      

Unscaled Zero Point Vibrational Energy (zpe) 17475.3 cm-1
Scaled (by 1.0624) Zero Point Vibrational Energy (zpe) 18565.8 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 PM6
ABC
0.18336 0.04810 0.03810

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM6

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.362
C2 0.000 0.000 -1.362
C3 0.000 1.233 0.698
C4 0.000 -1.233 0.698
C5 0.000 -1.233 -0.698
C6 0.000 1.233 -0.698
F7 0.000 0.000 2.696
F8 0.000 0.000 -2.696
H9 0.000 2.171 1.253
H10 0.000 -2.171 1.253
H11 0.000 -2.171 -1.253
H12 0.000 2.171 -1.253

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.72311.39971.39972.40062.40061.33484.05792.17402.17403.39853.3985
C22.72312.40062.40061.39971.39974.05791.33483.39853.39852.17402.1740
C31.39972.40062.46532.83351.39682.34763.61171.09023.44883.92362.1653
C41.39972.40062.46531.39682.83352.34763.61173.44881.09022.16533.9236
C52.40061.39972.83351.39682.46533.61172.34763.92362.16531.09023.4488
C62.40061.39971.39682.83352.46533.61172.34762.16533.92363.44881.0902
F71.33484.05792.34762.34763.61173.61175.39282.60742.60744.50684.5068
F84.05791.33483.61173.61172.34762.34765.39284.50684.50682.60742.6074
H92.17403.39851.09023.44883.92362.16532.60744.50684.34265.01372.5058
H102.17403.39853.44881.09022.16533.92362.60744.50684.34262.50585.0137
H113.39852.17403.92362.16531.09023.44884.50682.60745.01372.50584.3426
H123.39852.17402.16533.92363.44881.09024.50682.60742.50585.01374.3426

picture of 1,4-difluorobenzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C6 118.279 C1 C3 H9 121.150
C1 C4 C5 118.279 C1 C4 H10 121.150
C2 C5 C4 118.279 C2 C5 H11 121.150
C2 C6 C3 118.279 C2 C6 H12 121.150
C3 C1 C4 123.441 C3 C1 F7 118.279
C3 C6 H12 120.571 C4 C1 F7 118.279
C4 C5 H11 120.571 C5 C2 C6 123.441
C5 C2 F8 118.279 C5 C4 H10 120.571
C6 C2 F8 118.279 C6 C3 H9 120.571
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PM6 Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.166      
2 C 0.166      
3 C -0.185      
4 C -0.185      
5 C -0.185      
6 C -0.185      
7 F -0.149      
8 F -0.149      
9 H 0.177      
10 H 0.177      
11 H 0.177      
12 H 0.177      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.349 0.000 0.000
y 0.000 9.653 0.000
z 0.000 0.000 11.879


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000