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 CH3CCl2CH3 (Propane, 2,2-dichloro-)

using model chemistry: MP2/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/CEP-121G
 hartrees
Energy at 0K-49.611667
Energy at 298.15K 
HF Energy-49.248872
Nuclear repulsion energy97.905055
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-121G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3117 3042 13.57 67.36 0.75 0.85
2 A1 2987 2915 18.84 269.23 0.00 0.01
3 A1 1511 1475 2.90 19.01 0.74 0.85
4 A1 1467 1431 5.31 0.96 0.73 0.84
5 A1 1216 1187 38.39 3.25 0.21 0.35
6 A1 922 900 9.04 10.11 0.74 0.85
7 A1 521 509 16.49 21.14 0.05 0.09
8 A1 351 342 0.67 4.22 0.39 0.56
9 A1 240 235 1.29 7.02 0.66 0.79
10 A2 3091 3017 0.00 11.79 0.75 0.86
11 A2 1498 1462 0.00 22.85 0.75 0.86
12 A2 1049 1024 0.00 3.66 0.75 0.86
13 A2 274 267 0.00 2.15 0.75 0.86
14 A2 258 252 0.00 0.02 0.75 0.86
15 B1 3097 3023 29.32 131.06 0.75 0.86
16 B1 1517 1480 10.15 0.02 0.75 0.86
17 B1 1166 1138 74.52 5.20 0.75 0.86
18 B1 625 610 79.82 22.84 0.75 0.86
19 B1 348 340 1.42 3.23 0.75 0.86
20 B1 297 290 0.02 0.01 0.75 0.86
21 B2 3114 3039 10.45 38.00 0.75 0.86
22 B2 2983 2912 7.64 0.89 0.75 0.86
23 B2 1493 1457 6.02 0.00 0.75 0.86
24 B2 1447 1412 16.48 2.78 0.75 0.86
25 B2 1239 1209 10.88 0.04 0.75 0.86
26 B2 974 950 0.00 1.59 0.75 0.86
27 B2 364 355 5.24 2.20 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18582.5 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 18136.6 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 MP2/CEP-121G
ABC
0.11525 0.07453 0.06554

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.379
Cl2 1.537 0.000 -0.742
Cl3 -1.537 0.000 -0.742
C4 0.000 1.305 1.207
C5 0.000 -1.305 1.207
H6 0.000 2.185 0.549
H7 0.000 -2.185 0.549
H8 -0.900 1.330 1.842
H9 0.900 1.330 1.842
H10 0.900 -1.330 1.842
H11 -0.900 -1.330 1.842

Atom - Atom Distances (Å)
  C1 Cl2 Cl3 C4 C5 H6 H7 H8 H9 H10 H11
C11.90271.90271.54561.54562.19182.19182.17282.17282.17282.1728
Cl21.90273.07472.80472.80472.96752.96753.79352.97552.97553.7935
Cl31.90273.07472.80472.80472.96752.96752.97553.79353.79352.9755
C41.54562.80472.80472.60981.09893.55151.10191.10192.85642.8564
C51.54562.80472.80472.60983.55151.09892.85642.85641.10191.1019
H62.19182.96752.96751.09893.55154.37021.79221.79223.85243.8524
H72.19182.96752.96753.55151.09894.37023.85243.85241.79221.7922
H82.17283.79352.97551.10192.85641.79223.85241.80073.21302.6610
H92.17282.97553.79351.10192.85641.79223.85241.80072.66103.2130
H102.17282.97553.79352.85641.10193.85241.79223.21302.66101.8007
H112.17283.79352.97552.85641.10193.85241.79222.66103.21301.8007

picture of Propane, 2,2-dichloro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C4 H6 110.822 C1 C4 H8 109.166
C1 C4 H9 109.166 C1 C5 H7 110.822
C1 C5 H10 109.166 C1 C5 H11 109.166
Cl2 C1 Cl3 107.797 Cl2 C1 C4 108.406
Cl2 C1 C5 108.406 Cl3 C1 C4 108.406
Cl3 C1 C5 108.406 C4 C1 C5 115.192
H6 C4 H8 109.042 H6 C4 H9 109.042
H7 C5 H10 109.042 H7 C5 H11 109.042
H8 C4 H9 109.587 H10 C5 H11 109.587
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability