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All results from a given calculation for CH2ClCH2Cl (Ethane, 1,2-dichloro-)

using model chemistry: QCISD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C2 1A

Conformer 1 (C2H)

Jump to S1C2
Vibrational Frequencies calculated at QCISD/3-21G*
Rotational Constants (cm-1) from geometry optimized at QCISD/3-21G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1
Energy calculated at QCISD/3-21G*
 hartrees
Energy at 0K-992.930491
Energy at 298.15K-992.935312
HF Energy-992.433552
Nuclear repulsion energy200.031241
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 QCISD/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 3145 3023 0.48      
2 A 3092 2971 14.30      
3 A 1541 1481 0.18      
4 A 1387 1333 14.86      
5 A 1271 1222 1.02      
6 A 1038 998 0.01      
7 A 964 927 12.61      
8 A 642 617 17.49      
9 A 267 256 0.90      
10 A 115 110 1.06      
11 B 3158 3035 3.32      
12 B 3084 2964 2.38      
13 B 1547 1487 14.09      
14 B 1382 1329 25.71      
15 B 1219 1172 0.92      
16 B 924 888 15.02      
17 B 670 644 20.35      
18 B 421 405 7.81      

Unscaled Zero Point Vibrational Energy (zpe) 12934.0 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 12430.9 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 QCISD/3-21G*
ABC
0.32014 0.07349 0.06364

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.304 0.705 0.916
C2 -0.304 -0.705 0.916
Cl3 -0.304 1.695 -0.481
Cl4 0.304 -1.695 -0.481
H5 0.011 1.230 1.832
H6 1.394 0.662 0.839
H7 -0.011 -1.230 1.832
H8 -1.394 -0.662 0.839

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4 H5 H6 H7 H8
C11.53631.81672.77711.09551.09322.16452.1812
C21.53632.77711.81672.16452.18121.09551.0932
Cl31.81672.77713.44382.38002.38583.74052.9125
Cl42.77711.81673.44383.74052.91252.38002.3858
H51.09552.16452.38003.74051.79452.46072.5573
H61.09322.18122.38582.91251.79452.55733.0857
H72.16451.09553.74052.38002.46072.55731.7945
H82.18121.09322.91252.38582.55733.08571.7945

picture of Ethane, 1,2-dichloro- state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl4 111.565 C1 C2 H7 109.522
C1 C2 H8 110.979 C2 C1 Cl3 111.565
C2 C1 H5 109.522 C2 C1 H6 110.979
Cl3 C1 H5 106.999 Cl3 C1 H6 107.531
Cl4 C2 H7 106.999 Cl4 C2 H8 107.531
H5 C1 H6 110.151 H7 C2 H8 110.151
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability