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

using model chemistry: B3LYP/SDD

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/SDD
 hartrees
Energy at 0K-430.701663
Energy at 298.15K 
HF Energy-430.701663
Nuclear repulsion energy336.084073
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/SDD
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 3131 0.00 255.56 0.14 0.25
2 Ag 1650 1586 0.00 8.06 0.71 0.83
3 Ag 1239 1191 0.00 16.51 0.12 0.21
4 Ag 1178 1133 0.00 9.94 0.60 0.75
5 Ag 842 809 0.00 38.39 0.12 0.21
6 Ag 446 429 0.00 7.01 0.50 0.66
7 Au 983 945 0.00 0.00 0.00 0.00
8 Au 433 416 0.00 0.00 0.00 0.00
9 B1g 834 801 0.00 0.15 0.75 0.86
10 B1u 3237 3111 3.97 0.00 0.00 0.00
11 B1u 1529 1469 200.55 0.00 0.00 0.00
12 B1u 1195 1149 131.35 0.00 0.00 0.00
13 B1u 1029 989 8.76 0.00 0.00 0.00
14 B1u 715 688 56.96 0.00 0.00 0.00
15 B2g 971 933 0.00 0.22 0.75 0.86
16 B2g 722 694 0.00 0.00 0.75 0.86
17 B2g 367 352 0.00 3.90 0.75 0.86
18 B2u 3254 3128 1.37 0.00 0.00 0.00
19 B2u 1439 1384 0.03 0.00 0.00 0.00
20 B2u 1372 1319 0.36 0.00 0.00 0.00
21 B2u 1122 1079 14.50 0.00 0.00 0.00
22 B2u 327 314 7.31 0.00 0.00 0.00
23 B3g 3237 3112 0.00 95.79 0.75 0.86
24 B3g 1656 1592 0.00 14.03 0.75 0.86
25 B3g 1319 1268 0.00 0.60 0.75 0.86
26 B3g 645 620 0.00 10.21 0.75 0.86
27 B3g 428 412 0.00 0.32 0.75 0.86
28 B3u 868 835 118.97 0.00 0.00 0.00
29 B3u 519 499 23.54 0.00 0.00 0.00
30 B3u 156 150 3.38 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18484.4 cm-1
Scaled (by 0.9613) Zero Point Vibrational Energy (zpe) 17769.1 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 B3LYP/SDD
ABC
0.18422 0.04589 0.03674

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

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
C12.74021.40001.40002.41182.41181.40204.14232.15882.15883.40923.4092
C22.74022.41182.41181.40001.40004.14231.40203.40923.40922.15882.1588
C31.40002.41182.46242.83631.40752.40713.68751.08503.43473.92092.1802
C41.40002.41182.46241.40752.83632.40713.68753.43471.08502.18023.9209
C52.41181.40002.83631.40752.46243.68752.40713.92092.18021.08503.4347
C62.41181.40001.40752.83632.46243.68752.40712.18023.92093.43471.0850
F71.40204.14232.40712.40713.68753.68755.54432.62782.62784.58184.5818
F84.14231.40203.68753.68752.40712.40715.54434.58184.58182.62782.6278
H92.15883.40921.08503.43473.92092.18022.62784.58184.31295.00572.5408
H102.15883.40923.43471.08502.18023.92092.62784.58184.31292.54085.0057
H113.40922.15883.92092.18021.08503.43474.58182.62785.00572.54084.3129
H123.40922.15882.18023.92093.43471.08504.58182.62782.54085.00574.3129

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 118.423 C1 C3 H9 120.093
C1 C4 C5 118.423 C1 C4 H10 120.093
C2 C5 C4 118.423 C2 C5 H11 120.093
C2 C6 C3 118.423 C2 C6 H12 120.093
C3 C1 C4 123.154 C3 C1 F7 118.423
C3 C6 H12 121.485 C4 C1 F7 118.423
C4 C5 H11 121.485 C5 C2 C6 123.154
C5 C2 F8 118.423 C5 C4 H10 121.485
C6 C2 F8 118.423 C6 C3 H9 121.485
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.330      
2 C 0.330      
3 C -0.303      
4 C -0.303      
5 C -0.303      
6 C -0.303      
7 F -0.239      
8 F -0.239      
9 H 0.257      
10 H 0.257      
11 H 0.257      
12 H 0.257      


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 -46.821 0.000 0.000
y 0.000 -35.721 0.000
z 0.000 0.000 -55.965
Traceless
 xyz
x -0.978 0.000 0.000
y 0.000 15.672 0.000
z 0.000 0.000 -14.694
Polar
3z2-r2-29.388
x2-y2-11.100
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.758 0.000 0.000
y 0.000 10.190 0.000
z 0.000 0.000 11.153


<r2> (average value of r2) Å2
<r2> 263.014
(<r2>)1/2 16.218