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 CHF2CHF2 (1,1,2,2-tetrafluoroethane)

using model chemistry: SVWN/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at SVWN/cc-pVDZ
 hartrees
Energy at 0K-474.556976
Energy at 298.15K-474.560835
HF Energy-474.556976
Nuclear repulsion energy267.625283
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 SVWN/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 2968 2944 0.00      
2 Ag 1414 1402 0.00      
3 Ag 1136 1127 0.00      
4 Ag 1101 1092 0.00      
5 Ag 622 617 0.00      
6 Ag 354 351 0.00      
7 Au 1287 1277 110.42      
8 Au 1175 1166 305.40      
9 Au 185 183 2.00      
10 Au 69 69 1.73      
11 Bg 1313 1302 0.00      
12 Bg 1134 1125 0.00      
13 Bg 474 470 0.00      
14 Bu 2979 2956 59.19      
15 Bu 1242 1232 27.68      
16 Bu 1157 1148 199.43      
17 Bu 538 533 8.12      
18 Bu 377 374 39.58      

Unscaled Zero Point Vibrational Energy (zpe) 9761.6 cm-1
Scaled (by 0.9921) Zero Point Vibrational Energy (zpe) 9684.5 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 SVWN/cc-pVDZ
ABC
0.17138 0.10683 0.06973

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.242 0.715 0.000
C2 0.242 -0.715 0.000
H3 -1.358 0.761 0.000
H4 1.358 -0.761 0.000
F5 0.242 1.332 1.095
F6 0.242 1.332 -1.095
F7 -0.242 -1.332 1.095
F8 -0.242 -1.332 -1.095

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 F7 F8
C11.50901.11642.17611.34721.34722.32112.3211
C21.50902.17611.11642.32112.32111.34721.3472
H31.11642.17613.11232.02112.02112.61192.6119
H42.17611.11643.11232.61192.61192.02112.0211
F51.34722.32112.02112.61192.19052.70733.4825
F61.34722.32112.02112.61192.19053.48252.7073
F72.32111.34722.61192.02112.70733.48252.1905
F82.32111.34722.61192.02113.48252.70732.1905

picture of 1,1,2,2-tetrafluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 111.080 C1 C2 F7 108.576
C1 C2 F8 108.576 C2 C1 H3 111.080
C2 C1 F5 108.576 C2 C1 F6 108.576
H3 C1 F5 109.894 H3 C1 F6 109.894
H4 C2 F7 109.894 H4 C2 F8 109.894
F5 C1 F6 108.769 F7 C2 F8 108.769
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at SVWN/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.204      
2 C 0.204      
3 H 0.064      
4 H 0.064      
5 F -0.134      
6 F -0.134      
7 F -0.134      
8 F -0.134      


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 -28.550 -2.158 0.000
y -2.158 -33.972 0.000
z 0.000 0.000 -34.098
Traceless
 xyz
x 5.485 -2.158 0.000
y -2.158 -2.648 0.000
z 0.000 0.000 -2.837
Polar
3z2-r2-5.674
x2-y25.422
xy-2.158
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.646 -0.077 0.000
y -0.077 3.507 0.000
z 0.000 0.000 3.580


<r2> (average value of r2) Å2
<r2> 140.940
(<r2>)1/2 11.872