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

using model chemistry: BLYP/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 BLYP/TZVP
 hartrees
Energy at 0K-430.775433
Energy at 298.15K 
HF Energy-430.775433
Nuclear repulsion energy338.523915
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 BLYP/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 3137 3129 0.00 312.02 0.15 0.26
2 Ag 1576 1572 0.00 6.51 0.72 0.84
3 Ag 1203 1200 0.00 22.37 0.06 0.12
4 Ag 1135 1132 0.00 8.43 0.50 0.66
5 Ag 836 833 0.00 36.38 0.07 0.13
6 Ag 444 443 0.00 6.38 0.41 0.58
7 Au 882 880 0.00 0.00 0.00 0.00
8 Au 410 409 0.00 0.00 0.00 0.00
9 B1g 767 765 0.00 0.11 0.75 0.86
10 B1u 3124 3116 5.18 0.00 0.00 0.00
11 B1u 1483 1479 204.34 0.00 0.00 0.00
12 B1u 1168 1165 212.23 0.00 0.00 0.00
13 B1u 1001 998 1.10 0.00 0.00 0.00
14 B1u 716 714 73.73 0.00 0.00 0.00
15 B2g 834 832 0.00 0.31 0.75 0.86
16 B2g 547 546 0.00 1.91 0.75 0.86
17 B2g 332 331 0.00 1.99 0.75 0.86
18 B2u 3136 3128 0.90 0.00 0.00 0.00
19 B2u 1397 1394 0.79 0.00 0.00 0.00
20 B2u 1305 1302 0.06 0.00 0.00 0.00
21 B2u 1085 1082 12.61 0.00 0.00 0.00
22 B2u 336 336 4.37 0.00 0.00 0.00
23 B3g 3126 3118 0.00 127.30 0.75 0.86
24 B3g 1584 1580 0.00 8.17 0.75 0.86
25 B3g 1275 1272 0.00 1.48 0.75 0.86
26 B3g 632 630 0.00 7.92 0.75 0.86
27 B3g 437 436 0.00 0.18 0.75 0.86
28 B3u 802 800 77.17 0.00 0.00 0.00
29 B3u 491 490 16.73 0.00 0.00 0.00
30 B3u 151 150 1.71 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 17675.9 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 17631.7 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 BLYP/TZVP
ABC
0.18643 0.04662 0.03729

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.373
C2 0.000 0.000 -1.373
C3 0.000 1.223 0.701
C4 0.000 -1.223 0.701
C5 0.000 -1.223 -0.701
C6 0.000 1.223 -0.701
F7 0.000 0.000 2.745
F8 0.000 0.000 -2.745
H9 0.000 2.153 1.265
H10 0.000 -2.153 1.265
H11 0.000 -2.153 -1.265
H12 0.000 2.153 -1.265

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 F7 F8 H9 H10 H11 H12
C12.74561.39511.39512.40722.40721.37244.11812.15532.15533.40483.4048
C22.74562.40722.40721.39511.39514.11811.37243.40483.40482.15532.1553
C31.39512.40722.44512.81841.40162.38213.65651.08793.42213.90602.1749
C41.39512.40722.44511.40162.81842.38213.65653.42211.08792.17493.9060
C52.40721.39512.81841.40162.44513.65652.38213.90602.17491.08793.4221
C62.40721.39511.40162.81842.44513.65652.38212.17493.90603.42211.0879
F71.37244.11812.38212.38213.65653.65655.49052.61232.61234.55174.5517
F84.11811.37243.65653.65652.38212.38215.49054.55174.55172.61232.6123
H92.15533.40481.08793.42213.90602.17492.61234.55174.30534.99382.5304
H102.15533.40483.42211.08792.17493.90602.61234.55174.30532.53044.9938
H113.40482.15533.90602.17491.08793.42214.55172.61234.99382.53044.3053
H123.40482.15532.17493.90603.42211.08794.55172.61232.53044.99384.3053

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 118.796 C1 C3 H9 119.952
C1 C4 C5 118.796 C1 C4 H10 119.952
C2 C5 C4 118.796 C2 C5 H11 119.952
C2 C6 C3 118.796 C2 C6 H12 119.952
C3 C1 C4 122.408 C3 C1 F7 118.796
C3 C6 H12 121.252 C4 C1 F7 118.796
C4 C5 H11 121.252 C5 C2 C6 122.408
C5 C2 F8 118.796 C5 C4 H10 121.252
C6 C2 F8 118.796 C6 C3 H9 121.252
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.218      
2 C 0.218      
3 C -0.149      
4 C -0.149      
5 C -0.149      
6 C -0.149      
7 F -0.184      
8 F -0.184      
9 H 0.132      
10 H 0.132      
11 H 0.132      
12 H 0.132      


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 -46.977 0.000 0.000
y 0.000 -37.699 0.000
z 0.000 0.000 -53.133
Traceless
 xyz
x -1.561 0.000 0.000
y 0.000 12.356 0.000
z 0.000 0.000 -10.795
Polar
3z2-r2-21.590
x2-y2-9.278
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.526 0.000 0.000
y 0.000 11.581 0.000
z 0.000 0.000 12.335


<r2> (average value of r2) Å2
<r2> 259.558
(<r2>)1/2 16.111