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 CHCl2CHF2 (1,1-dichloro-2,2-difluoroethane)

using model chemistry: B2PLYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP/3-21G*
 hartrees
Energy at 0K-1191.183682
Energy at 298.15K-1191.187094
HF Energy-1190.957226
Nuclear repulsion energy374.767254
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 B2PLYP/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' 3201 3201 2.55      
2 A' 3180 3180 20.33      
3 A' 1461 1461 22.83      
4 A' 1302 1302 0.55      
5 A' 1120 1120 98.32      
6 A' 1059 1059 22.24      
7 A' 776 776 29.27      
8 A' 541 541 9.53      
9 A' 379 379 20.16      
10 A' 346 346 10.31      
11 A' 251 251 0.06      
12 A" 1443 1443 12.87      
13 A" 1284 1284 14.66      
14 A" 1170 1170 87.48      
15 A" 784 784 121.18      
16 A" 392 392 3.30      
17 A" 176 176 1.90      
18 A" 80 80 1.05      

Unscaled Zero Point Vibrational Energy (zpe) 9472.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9472.5 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 B2PLYP/3-21G*
ABC
0.08025 0.07019 0.03876

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.403 -0.221 0.000
C2 -0.373 1.097 0.000
H3 1.473 -0.033 0.000
H4 -1.443 0.909 0.000
Cl5 -0.004 -1.142 1.483
Cl6 -0.004 -1.142 -1.483
F7 -0.004 1.816 1.130
F8 -0.004 1.816 -1.130

Atom - Atom Distances (Å)
  C1 C2 H3 H4 Cl5 Cl6 F7 F8
C11.52961.08612.16451.79301.79302.36402.3640
C21.52962.16451.08612.71092.71091.38861.3886
H31.08612.16453.06432.36912.36912.62192.6219
H42.16451.08613.06432.91142.91142.04142.0414
Cl51.79302.71092.36912.91142.96672.97823.9463
Cl61.79302.71092.36912.91142.96673.94632.9782
F72.36401.38862.62192.04142.97823.94632.2594
F82.36401.38862.62192.04143.94632.97822.2594

picture of 1,1-dichloro-2,2-difluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 110.540 C1 C2 F7 108.109
C1 C2 F8 108.109 C2 C1 H3 110.540
C2 C1 Cl5 109.098 C2 C1 Cl6 109.098
H3 C1 Cl5 108.227 H3 C1 Cl6 108.227
H4 C2 F7 110.558 H4 C2 F8 110.558
Cl5 C1 Cl6 111.650 F7 C2 F8 108.887
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.492      
2 C 0.465      
3 H 0.315      
4 H 0.227      
5 Cl 0.029      
6 Cl 0.029      
7 F -0.286      
8 F -0.286      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.076 -0.036 0.000 0.084
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.831 -0.970 0.000
y -0.970 -51.279 0.000
z 0.000 0.000 -50.420
Traceless
 xyz
x 7.019 -0.970 0.000
y -0.970 -4.154 0.000
z 0.000 0.000 -2.865
Polar
3z2-r2-5.730
x2-y27.448
xy-0.970
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.050 0.236 0.000
y 0.236 5.322 0.000
z 0.000 0.000 7.376


<r2> (average value of r2) Å2
<r2> 246.135
(<r2>)1/2 15.689