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 CH3CHCl2 (Ethane, 1,1-dichloro-)

using model chemistry: MP2/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/CEP-31G*
 hartrees
Energy at 0K-43.190900
Energy at 298.15K-43.195663
HF Energy-42.676749
Nuclear repulsion energy64.765301
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 MP2/CEP-31G*
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' 3222 3059 18.40      
2 A' 3197 3035 4.35      
3 A' 3102 2945 12.50      
4 A' 1508 1432 6.93      
5 A' 1446 1373 7.84      
6 A' 1332 1264 19.54      
7 A' 1134 1077 3.68      
8 A' 1014 963 12.84      
9 A' 674 640 12.00      
10 A' 410 389 4.37      
11 A' 281 267 1.24      
12 A" 3207 3045 13.93      
13 A" 1509 1433 1.82      
14 A" 1301 1235 51.58      
15 A" 1100 1044 44.72      
16 A" 756 717 102.48      
17 A" 325 309 0.48      
18 A" 282 267 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 12899.5 cm-1
Scaled (by 0.9494) Zero Point Vibrational Energy (zpe) 12246.8 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 MP2/CEP-31G*
ABC
0.21097 0.10424 0.07398

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.545 0.000
C2 -1.483 0.940 0.000
H3 0.665 1.420 0.000
Cl4 0.404 -0.395 1.480
Cl5 0.404 -0.395 -1.480
H6 -2.117 0.038 0.000
H7 -1.700 1.539 0.901
H8 -1.700 1.539 -0.901

Atom - Atom Distances (Å)
  C1 C2 H3 Cl4 Cl5 H6 H7 H8
C11.53481.09941.79941.79942.17632.16542.1654
C21.53482.20122.74512.74511.10181.10351.1035
H31.09942.20122.35672.35673.10602.53332.5333
Cl41.79942.74512.35672.96022.95542.91603.7199
Cl51.79942.74512.35672.96022.95543.71992.9160
H62.17631.10183.10602.95542.95541.79921.7992
H72.16541.10352.53332.91603.71991.79921.8020
H82.16541.10352.53333.71992.91601.79921.8020

picture of Ethane, 1,1-dichloro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 110.184 C1 C2 H7 109.233
C1 C2 H8 109.233 C2 C1 H3 112.310
C2 C1 Cl4 110.588 C2 C1 Cl5 110.588
H3 C1 Cl4 106.258 H3 C1 Cl5 106.258
Cl4 C1 Cl5 110.684 H6 C2 H7 109.349
H6 C2 H8 109.349 H7 C2 H8 109.479
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability