return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: mPW1PW91/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1Ag
Energy calculated at mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-430.673191
Energy at 298.15K 
HF Energy-430.673191
Nuclear repulsion energy341.249413
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 mPW1PW91/aug-cc-pVDZ
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 3247 3112 0.00 298.88 0.13 0.23
2 Ag 1678 1608 0.00 4.79 0.75 0.86
3 Ag 1291 1237 0.00 34.00 0.06 0.11
4 Ag 1154 1106 0.00 7.98 0.60 0.75
5 Ag 873 837 0.00 39.91 0.05 0.09
6 Ag 454 435 0.00 5.39 0.32 0.48
7 Au 961 921 0.00 0.00 0.00 0.00
8 Au 434 416 0.00 0.00 0.00 0.00
9 B1g 814 780 0.00 0.46 0.75 0.86
10 B1u 3232 3098 4.00 0.00 0.00 0.00
11 B1u 1545 1481 268.28 0.00 0.00 0.00
12 B1u 1223 1172 182.65 0.00 0.00 0.00
13 B1u 1022 979 6.88 0.00 0.00 0.00
14 B1u 746 715 62.84 0.00 0.00 0.00
15 B2g 942 902 0.00 0.00 0.75 0.86
16 B2g 714 684 0.00 0.89 0.75 0.86
17 B2g 376 361 0.00 2.94 0.75 0.86
18 B2u 3247 3111 0.08 0.00 0.00 0.00
19 B2u 1452 1391 0.63 0.00 0.00 0.00
20 B2u 1379 1322 0.00 0.00 0.00 0.00
21 B2u 1102 1056 10.95 0.00 0.00 0.00
22 B2u 348 333 4.50 0.00 0.00 0.00
23 B3g 3235 3100 0.00 117.78 0.75 0.86
24 B3g 1685 1615 0.00 9.08 0.75 0.86
25 B3g 1287 1233 0.00 1.33 0.75 0.86
26 B3g 643 616 0.00 5.30 0.75 0.86
27 B3g 443 425 0.00 0.04 0.75 0.86
28 B3u 857 822 78.60 0.00 0.00 0.00
29 B3u 515 494 20.22 0.00 0.00 0.00
30 B3u 159 153 1.68 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 18528.8 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 17756.2 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 mPW1PW91/aug-cc-pVDZ
ABC
0.18848 0.04752 0.03795

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.365
C2 0.000 0.000 -1.365
C3 0.000 1.215 0.697
C4 0.000 -1.215 0.697
C5 0.000 -1.215 -0.697
C6 0.000 1.215 -0.697
F7 0.000 0.000 2.716
F8 0.000 0.000 -2.716
H9 0.000 2.145 1.261
H10 0.000 -2.145 1.261
H11 0.000 -2.145 -1.261
H12 0.000 2.145 -1.261

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.73071.38701.38702.39362.39361.35074.08142.14752.14753.39133.3913
C22.73072.39362.39361.38701.38704.08141.35073.39133.39132.14752.1475
C31.38702.39362.43062.80181.39362.35683.62281.08773.40743.88922.1677
C41.38702.39362.43061.39362.80182.35683.62283.40741.08772.16773.8892
C52.39361.38702.80181.39362.43063.62282.35683.88922.16771.08773.4074
C62.39361.38701.39362.80182.43063.62282.35682.16773.88923.40741.0877
F71.35074.08142.35682.35683.62283.62285.43222.59172.59174.51904.5190
F84.08141.35073.62283.62282.35682.35685.43224.51904.51902.59172.5917
H92.14753.39131.08773.40743.88922.16772.59174.51904.29004.97682.5229
H102.14753.39133.40741.08772.16773.88922.59174.51904.29002.52294.9768
H113.39132.14753.88922.16771.08773.40744.51902.59174.97682.52294.2900
H123.39132.14752.16773.88923.40741.08774.51902.59172.52294.97684.2900

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 118.816 C1 C3 H9 119.912
C1 C4 C5 118.816 C1 C4 H10 119.912
C2 C5 C4 118.816 C2 C5 H11 119.912
C2 C6 C3 118.816 C2 C6 H12 119.912
C3 C1 C4 122.368 C3 C1 F7 118.816
C3 C6 H12 121.272 C4 C1 F7 118.816
C4 C5 H11 121.272 C5 C2 C6 122.368
C5 C2 F8 118.816 C5 C4 H10 121.272
C6 C2 F8 118.816 C6 C3 H9 121.272
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.370      
2 C 0.370      
3 C 0.637      
4 C 0.637      
5 C 0.637      
6 C 0.637      
7 F -0.615      
8 F -0.615      
9 H -0.514      
10 H -0.514      
11 H -0.514      
12 H -0.514      


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 -46.630 0.000 0.000
y 0.000 -36.696 0.000
z 0.000 0.000 -51.926
Traceless
 xyz
x -2.319 0.000 0.000
y 0.000 12.581 0.000
z 0.000 0.000 -10.262
Polar
3z2-r2-20.525
x2-y2-9.933
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.326 0.000 0.000
y 0.000 11.829 0.000
z 0.000 0.000 12.418


<r2> (average value of r2) Å2
<r2> 255.186
(<r2>)1/2 15.975