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

using model chemistry: PBEPBE/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at PBEPBE/TZVP
 hartrees
Energy at 0K-430.398143
Energy at 298.15K 
HF Energy-430.398143
Nuclear repulsion energy339.727649
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 PBEPBE/TZVP
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 3146 3111 0.00 310.04 0.15 0.26
2 Ag 1602 1584 0.00 6.28 0.69 0.82
3 Ag 1236 1223 0.00 23.07 0.07 0.13
4 Ag 1129 1116 0.00 7.46 0.56 0.72
5 Ag 846 837 0.00 36.65 0.07 0.12
6 Ag 444 439 0.00 5.86 0.42 0.59
7 Au 875 865 0.00 0.00 0.00 0.00
8 Au 406 401 0.00 0.00 0.00 0.00
9 B1g 763 755 0.00 0.22 0.75 0.86
10 B1u 3132 3097 4.15 0.00 0.00 0.00
11 B1u 1491 1474 245.15 0.00 0.00 0.00
12 B1u 1185 1172 191.17 0.00 0.00 0.00
13 B1u 998 987 2.54 0.00 0.00 0.00
14 B1u 727 719 64.89 0.00 0.00 0.00
15 B2g 828 819 0.00 0.39 0.75 0.86
16 B2g 535 529 0.00 2.27 0.75 0.86
17 B2g 325 322 0.00 1.63 0.75 0.86
18 B2u 3145 3110 0.07 0.00 0.00 0.00
19 B2u 1406 1390 0.99 0.00 0.00 0.00
20 B2u 1344 1329 0.02 0.00 0.00 0.00
21 B2u 1080 1068 13.39 0.00 0.00 0.00
22 B2u 340 337 3.93 0.00 0.00 0.00
23 B3g 3135 3100 0.00 125.27 0.75 0.86
24 B3g 1605 1587 0.00 7.19 0.75 0.86
25 B3g 1261 1247 0.00 1.74 0.75 0.86
26 B3g 628 621 0.00 7.90 0.75 0.86
27 B3g 437 432 0.00 0.11 0.75 0.86
28 B3u 799 790 78.15 0.00 0.00 0.00
29 B3u 491 486 18.22 0.00 0.00 0.00
30 B3u 151 149 1.40 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 17745.8 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 17547.1 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 PBEPBE/TZVP
ABC
0.18734 0.04701 0.03758

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/TZVP

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.372
C2 0.000 0.000 -1.372
C3 0.000 1.219 0.699
C4 0.000 -1.219 0.699
C5 0.000 -1.219 -0.699
C6 0.000 1.219 -0.699
F7 0.000 0.000 2.732
F8 0.000 0.000 -2.732
H9 0.000 2.151 1.264
H10 0.000 -2.151 1.264
H11 0.000 -2.151 -1.264
H12 0.000 2.151 -1.264

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.74341.39251.39252.40262.40261.36014.10352.15382.15383.40233.4023
C22.74342.40262.40261.39251.39254.10351.36013.40233.40232.15382.1538
C31.39252.40262.43812.81011.39732.37063.64061.09033.41733.90012.1730
C41.39252.40262.43811.39732.81012.37063.64063.41731.09032.17303.9001
C52.40261.39252.81011.39732.43813.64062.37063.90012.17301.09033.4173
C62.40261.39251.39732.81012.43813.64062.37062.17303.90013.41731.0903
F71.36014.10352.37062.37063.64063.64065.46362.60402.60404.53834.5383
F84.10351.36013.64063.64062.37062.37065.46364.53834.53832.60402.6040
H92.15383.40231.09033.41733.90012.17302.60404.53834.30224.99032.5286
H102.15383.40233.41731.09032.17303.90012.60404.53834.30222.52864.9903
H113.40232.15383.90012.17301.09033.41734.53832.60404.99032.52864.3022
H123.40232.15382.17303.90013.41731.09034.53832.60402.52864.99034.3022

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 118.902 C1 C3 H9 119.846
C1 C4 C5 118.902 C1 C4 H10 119.846
C2 C5 C4 118.902 C2 C5 H11 119.846
C2 C6 C3 118.902 C2 C6 H12 119.846
C3 C1 C4 122.196 C3 C1 F7 118.902
C3 C6 H12 121.252 C4 C1 F7 118.902
C4 C5 H11 121.252 C5 C2 C6 122.196
C5 C2 F8 118.902 C5 C4 H10 121.252
C6 C2 F8 118.902 C6 C3 H9 121.252
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.206      
2 C 0.206      
3 C -0.160      
4 C -0.160      
5 C -0.160      
6 C -0.160      
7 F -0.155      
8 F -0.155      
9 H 0.135      
10 H 0.135      
11 H 0.135      
12 H 0.135      


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
Primitive
 xyz
x -46.800 0.000 0.000
y 0.000 -37.248 0.000
z 0.000 0.000 -51.856
Traceless
 xyz
x -2.248 0.000 0.000
y 0.000 12.080 0.000
z 0.000 0.000 -9.832
Polar
3z2-r2-19.663
x2-y2-9.552
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.471 0.000 0.000
y 0.000 11.489 0.000
z 0.000 0.000 12.221


<r2> (average value of r2) Å2
<r2> 257.486
(<r2>)1/2 16.046