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

using model chemistry: HSEh1PBE/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at HSEh1PBE/6-311+G(3df,2p)
 hartrees
Energy at 0K-430.443111
Energy at 298.15K 
HF Energy-430.443111
Nuclear repulsion energy343.110032
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 HSEh1PBE/6-311+G(3df,2p)
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 3225 3225 0.00 291.26 0.13 0.23
2 Ag 1673 1673 0.00 5.10 0.74 0.85
3 Ag 1299 1299 0.00 31.93 0.06 0.11
4 Ag 1159 1159 0.00 7.65 0.60 0.75
5 Ag 877 877 0.00 39.87 0.05 0.09
6 Ag 457 457 0.00 5.26 0.32 0.48
7 Au 977 977 0.00 0.00 0.00 0.00
8 Au 434 434 0.00 0.00 0.00 0.00
9 B1g 822 822 0.00 0.49 0.75 0.86
10 B1u 3208 3208 4.33 0.00 0.00 0.00
11 B1u 1551 1551 266.56 0.00 0.00 0.00
12 B1u 1218 1218 198.31 0.00 0.00 0.00
13 B1u 989 989 21.70 0.00 0.00 0.00
14 B1u 732 732 44.19 0.00 0.00 0.00
15 B2g 954 954 0.00 0.00 0.75 0.86
16 B2g 691 691 0.00 1.17 0.75 0.86
17 B2g 381 381 0.00 2.83 0.75 0.86
18 B2u 3224 3224 0.03 0.00 0.00 0.00
19 B2u 1458 1458 0.76 0.00 0.00 0.00
20 B2u 1359 1359 0.01 0.00 0.00 0.00
21 B2u 1106 1106 11.26 0.00 0.00 0.00
22 B2u 354 354 4.26 0.00 0.00 0.00
23 B3g 3212 3212 0.00 114.72 0.75 0.86
24 B3g 1673 1673 0.00 8.51 0.75 0.86
25 B3g 1300 1300 0.00 1.34 0.75 0.86
26 B3g 644 644 0.00 5.44 0.75 0.86
27 B3g 450 450 0.00 0.01 0.75 0.86
28 B3u 865 865 75.88 0.00 0.00 0.00
29 B3u 521 521 19.81 0.00 0.00 0.00
30 B3u 160 160 1.55 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18485.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18485.8 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 HSEh1PBE/6-311+G(3df,2p)
ABC
0.19062 0.04801 0.03835

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-311+G(3df,2p)

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 1.208 0.693
C4 0.000 -1.208 0.693
C5 0.000 -1.208 -0.693
C6 0.000 1.208 -0.693
F7 0.000 0.000 2.701
F8 0.000 0.000 -2.701
H9 0.000 2.133 1.255
H10 0.000 -2.133 1.255
H11 0.000 -2.133 -1.255
H12 0.000 2.133 -1.255

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.72371.38101.38102.38422.38421.33924.06292.13572.13573.37613.3761
C22.72372.38422.38421.38101.38104.06291.33923.37613.37612.13572.1357
C31.38102.38422.41682.78651.38682.34333.60311.08183.38833.86802.1567
C41.38102.38422.41681.38682.78652.34333.60313.38831.08182.15673.8680
C52.38421.38102.78651.38682.41683.60312.34333.86802.15671.08183.3883
C62.38421.38101.38682.78652.41683.60312.34332.15673.86803.38831.0818
F71.33924.06292.34332.34333.60313.60315.40212.57692.57694.49454.4945
F84.06291.33923.60313.60312.34332.34335.40214.49454.49452.57692.5769
H92.13573.37611.08183.38833.86802.15672.57694.49454.26604.94972.5101
H102.13573.37613.38831.08182.15673.86802.57694.49454.26602.51014.9497
H113.37612.13573.86802.15671.08183.38834.49452.57694.94972.51014.2660
H123.37612.13572.15673.86803.38831.08184.49452.57692.51014.94974.2660

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 118.950 C1 C3 H9 119.774
C1 C4 C5 118.950 C1 C4 H10 119.774
C2 C5 C4 118.950 C2 C5 H11 119.774
C2 C6 C3 118.950 C2 C6 H12 119.774
C3 C1 C4 122.100 C3 C1 F7 118.950
C3 C6 H12 121.276 C4 C1 F7 118.950
C4 C5 H11 121.276 C5 C2 C6 122.100
C5 C2 F8 118.950 C5 C4 H10 121.276
C6 C2 F8 118.950 C6 C3 H9 121.276
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.110      
2 C 0.110      
3 C 0.104      
4 C 0.104      
5 C 0.104      
6 C 0.104      
7 F -0.561      
8 F -0.561      
9 H 0.122      
10 H 0.122      
11 H 0.122      
12 H 0.122      


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 -46.587 0.000 0.000
y 0.000 -36.891 0.000
z 0.000 0.000 -51.496
Traceless
 xyz
x -2.394 0.000 0.000
y 0.000 12.151 0.000
z 0.000 0.000 -9.757
Polar
3z2-r2-19.514
x2-y2-9.696
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.281 0.000 0.000
y 0.000 11.708 0.000
z 0.000 0.000 12.288


<r2> (average value of r2) Å2
<r2> 252.764
(<r2>)1/2 15.899