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

using model chemistry: QCISD(T)/aug-cc-pVDZ

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(T)/aug-cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at QCISD(T)/aug-cc-pVDZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/aug-cc-pVDZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1
Energy calculated at QCISD(T)/aug-cc-pVDZ
 hartrees
Energy at 0K-997.746982
Energy at 298.15K-997.751776
HF Energy-997.085354
Nuclear repulsion energy200.328240
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(T)/aug-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 A 3139 3069        
2 A 3076 3007        
3 A 1453 1421        
4 A 1326 1296        
5 A 1214 1187        
6 A 1056 1033        
7 A 950 929        
8 A 660 645        
9 A 260 254        
10 A 111 109        
11 B 3149 3080        
12 B 3068 3000        
13 B 1447 1415        
14 B 1299 1271        
15 B 1147 1121        
16 B 890 870        
17 B 682 667        
18 B 406 397        

Unscaled Zero Point Vibrational Energy (zpe) 12665.8 cm-1
Scaled (by 0.9778) Zero Point Vibrational Energy (zpe) 12384.6 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(T)/aug-cc-pVDZ
ABC
0.32521 0.07326 0.06367

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/aug-cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.305 0.698 0.906
C2 -0.305 -0.698 0.906
Cl3 -0.305 1.699 -0.476
Cl4 0.305 -1.699 -0.476
H5 0.015 1.226 1.830
H6 1.401 0.659 0.821
H7 -0.015 -1.226 1.830
H8 -1.401 -0.659 0.821

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4 H5 H6 H7 H8
C11.52401.81122.76681.10291.10082.15882.1819
C21.52402.76681.81122.15882.18191.10291.1008
Cl31.81122.76683.45162.37502.38173.73572.9056
Cl42.76681.81123.45163.73572.90562.37502.3817
H51.10292.15882.37503.73571.80642.45292.5648
H61.10082.18192.38172.90561.80642.56483.0973
H72.15881.10293.73572.37502.45292.56481.8064
H82.18191.10082.90562.38172.56483.09731.8064

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 111.821 C1 C2 H7 109.489
C1 C2 H8 111.440 C2 C1 Cl3 111.821
C2 C1 H5 109.489 C2 C1 H6 111.440
Cl3 C1 H5 106.633 Cl3 C1 H6 107.214
Cl4 C2 H7 106.633 Cl4 C2 H8 107.214
H5 C1 H6 110.113 H7 C2 H8 110.113
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability