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 CHFClCHFCl (1,2-dichloro-1,2-difluoroethane RR)

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-1191.579643
Energy at 298.15K-1191.582962
HF Energy-1191.579643
Nuclear repulsion energy373.859030
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 B3PW91/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3147 3020 1.44      
2 A 1412 1354 0.86      
3 A 1317 1263 18.21      
4 A 1118 1073 129.98      
5 A 1050 1007 42.16      
6 A 797 765 88.89      
7 A 433 416 4.15      
8 A 289 277 1.14      
9 A 162 156 1.35      
10 A 77 74 0.65      
11 B 3163 3035 8.20      
12 B 1350 1295 3.64      
13 B 1273 1221 19.52      
14 B 1087 1043 12.20      
15 B 770 738 111.18      
16 B 403 386 8.06      
17 B 365 350 17.64      
18 B 336 322 10.98      

Unscaled Zero Point Vibrational Energy (zpe) 9274.3 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 8897.8 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 B3PW91/3-21G*
ABC
0.09446 0.06068 0.03834

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.241 0.725 0.412
C2 0.241 -0.725 0.412
H3 -1.329 0.772 0.375
H4 1.329 -0.772 0.375
F5 0.241 1.315 1.582
F6 -0.241 -1.315 1.582
Cl7 0.415 1.600 -1.005
Cl8 -0.415 -1.600 -1.005

Atom - Atom Distances (Å)
  C1 C2 H3 H4 F5 F6 Cl7 Cl8
C11.52831.09022.16961.39572.35171.79012.7291
C21.52832.16961.09022.35171.39572.72911.7901
H31.09022.16963.07412.05352.64532.37312.8927
H42.16961.09023.07412.64532.05352.89272.3731
F51.39572.35172.05352.64532.67282.60913.9525
F62.35171.39572.64532.05352.67283.95252.6091
Cl71.79012.72912.37312.89272.60913.95253.3065
Cl82.72911.79012.89272.37313.95252.60913.3065

picture of 1,2-dichloro-1,2-difluoroethane RR state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 110.793 C1 C2 F6 106.993
C1 C2 Cl8 110.408 C2 C1 H3 110.793
C2 C1 F5 106.993 C2 C1 Cl7 110.408
H3 C1 F5 110.797 H3 C1 Cl7 108.500
H4 C2 F6 110.797 H4 C2 Cl8 108.500
F5 C1 Cl7 109.344 F6 C2 Cl8 109.344
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.048      
2 C -0.048      
3 H 0.295      
4 H 0.295      
5 F -0.258      
6 F -0.258      
7 Cl 0.012      
8 Cl 0.012      


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 -0.224 0.224
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -44.195 -2.482 0.000
y -2.482 -50.470 0.000
z 0.000 0.000 -50.213
Traceless
 xyz
x 6.146 -2.482 0.000
y -2.482 -3.266 0.000
z 0.000 0.000 -2.880
Polar
3z2-r2-5.761
x2-y26.275
xy-2.482
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.459 0.748 0.000
y 0.748 5.900 0.000
z 0.000 0.000 6.661


<r2> (average value of r2) Å2
<r2> 248.720
(<r2>)1/2 15.771