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

using model chemistry: B3LYP/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at B3LYP/LANL2DZ
 hartrees
Energy at 0K-430.701006
Energy at 298.15K 
HF Energy-430.701006
Nuclear repulsion energy336.113213
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 B3LYP/LANL2DZ
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 3257 3130 0.00 255.99 0.14 0.24
2 Ag 1651 1587 0.00 8.04 0.71 0.83
3 Ag 1239 1191 0.00 16.43 0.12 0.22
4 Ag 1179 1133 0.00 9.97 0.60 0.75
5 Ag 842 810 0.00 38.33 0.12 0.21
6 Ag 446 429 0.00 7.01 0.49 0.66
7 Au 984 945 0.00 0.00 0.00 0.00
8 Au 433 417 0.00 0.00 0.00 0.00
9 B1g 834 802 0.00 0.18 0.75 0.86
10 B1u 3236 3110 3.84 0.00 0.00 0.00
11 B1u 1529 1470 199.72 0.00 0.00 0.00
12 B1u 1196 1150 129.54 0.00 0.00 0.00
13 B1u 1029 989 8.71 0.00 0.00 0.00
14 B1u 716 688 56.83 0.00 0.00 0.00
15 B2g 971 933 0.00 0.19 0.75 0.86
16 B2g 723 695 0.00 0.00 0.75 0.86
17 B2g 367 352 0.00 3.89 0.75 0.86
18 B2u 3254 3127 1.25 0.00 0.00 0.00
19 B2u 1440 1384 0.03 0.00 0.00 0.00
20 B2u 1372 1319 0.37 0.00 0.00 0.00
21 B2u 1122 1079 14.43 0.00 0.00 0.00
22 B2u 327 314 7.32 0.00 0.00 0.00
23 B3g 3237 3111 0.00 96.10 0.75 0.86
24 B3g 1656 1592 0.00 13.98 0.75 0.86
25 B3g 1319 1268 0.00 0.61 0.75 0.86
26 B3g 645 620 0.00 10.18 0.75 0.86
27 B3g 428 411 0.00 0.33 0.75 0.86
28 B3u 869 835 119.45 0.00 0.00 0.00
29 B3u 520 500 24.04 0.00 0.00 0.00
30 B3u 156 150 3.39 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18487.2 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 17769.9 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 B3LYP/LANL2DZ
ABC
0.18427 0.04590 0.03675

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/LANL2DZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.370
C2 0.000 0.000 -1.370
C3 0.000 1.231 0.704
C4 0.000 -1.231 0.704
C5 0.000 -1.231 -0.704
C6 0.000 1.231 -0.704
F7 0.000 0.000 2.772
F8 0.000 0.000 -2.772
H9 0.000 2.156 1.270
H10 0.000 -2.156 1.270
H11 0.000 -2.156 -1.270
H12 0.000 2.156 -1.270

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.73971.39971.39972.41142.41141.40224.14192.15862.15863.40893.4089
C22.73972.41142.41141.39971.39974.14191.40223.40893.40892.15862.1586
C31.39972.41142.46212.83591.40732.40703.68721.08503.43443.92052.1801
C41.39972.41142.46211.40732.83592.40703.68723.43441.08502.18013.9205
C52.41141.39972.83591.40732.46213.68722.40703.92052.18011.08503.4344
C62.41141.39971.40732.83592.46213.68722.40702.18013.92053.43441.0850
F71.40224.14192.40702.40703.68723.68725.54402.62762.62764.58154.5815
F84.14191.40223.68723.68722.40702.40705.54404.58154.58152.62762.6276
H92.15863.40891.08503.43443.92052.18012.62764.58154.31265.00532.5407
H102.15863.40893.43441.08502.18013.92052.62764.58154.31262.54075.0053
H113.40892.15863.92052.18011.08503.43444.58152.62765.00532.54074.3126
H123.40892.15862.18013.92053.43441.08504.58152.62762.54075.00534.3126

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 118.421 C1 C3 H9 120.092
C1 C4 C5 118.421 C1 C4 H10 120.092
C2 C5 C4 118.421 C2 C5 H11 120.092
C2 C6 C3 118.421 C2 C6 H12 120.092
C3 C1 C4 123.158 C3 C1 F7 118.421
C3 C6 H12 121.487 C4 C1 F7 118.421
C4 C5 H11 121.487 C5 C2 C6 123.158
C5 C2 F8 118.421 C5 C4 H10 121.487
C6 C2 F8 118.421 C6 C3 H9 121.487
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.326      
2 C 0.326      
3 C -0.302      
4 C -0.302      
5 C -0.302      
6 C -0.302      
7 F -0.239      
8 F -0.239      
9 H 0.258      
10 H 0.258      
11 H 0.258      
12 H 0.258      


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 -46.826 0.000 0.000
y 0.000 -35.679 0.000
z 0.000 0.000 -55.968
Traceless
 xyz
x -1.003 0.000 0.000
y 0.000 15.718 0.000
z 0.000 0.000 -14.715
Polar
3z2-r2-29.431
x2-y2-11.147
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.722 0.000 0.000
y 0.000 10.176 0.000
z 0.000 0.000 11.142


<r2> (average value of r2) Å2
<r2> 262.967
(<r2>)1/2 16.216