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 CH3CHClCH3 (Propane, 2-chloro-)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-574.661209
Energy at 298.15K-574.668973
HF Energy-574.337837
Nuclear repulsion energy162.254910
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 MP2/3-21G
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' 3195 3050 22.84 24.69 0.09 0.17
2 A' 3174 3030 6.62 80.14 0.67 0.80
3 A' 3160 3016 8.06 134.66 0.66 0.80
4 A' 3089 2948 13.27 183.90 0.03 0.06
5 A' 1604 1531 10.84 2.95 0.66 0.80
6 A' 1594 1521 7.17 32.49 0.75 0.86
7 A' 1506 1438 6.54 3.73 0.47 0.64
8 A' 1330 1269 40.48 8.62 0.57 0.73
9 A' 1248 1191 25.25 3.12 0.69 0.82
10 A' 1120 1069 9.17 8.97 0.63 0.77
11 A' 892 851 10.01 10.44 0.71 0.83
12 A' 596 569 25.45 24.78 0.30 0.46
13 A' 424 404 1.84 2.19 0.22 0.36
14 A' 338 323 2.65 2.63 0.49 0.65
15 A' 280 268 0.18 0.07 0.55 0.71
16 A" 3183 3038 8.10 29.95 0.75 0.86
17 A" 3160 3016 3.18 14.68 0.75 0.86
18 A" 3085 2945 6.08 2.77 0.75 0.86
19 A" 1587 1515 1.30 27.85 0.75 0.86
20 A" 1582 1510 2.74 10.88 0.75 0.86
21 A" 1491 1423 12.01 6.98 0.75 0.86
22 A" 1424 1359 2.40 4.91 0.75 0.86
23 A" 1167 1114 4.96 5.60 0.75 0.86
24 A" 1014 968 2.55 0.21 0.75 0.86
25 A" 990 945 0.09 1.97 0.75 0.86
26 A" 318 303 1.79 2.41 0.75 0.86
27 A" 260 249 0.07 0.10 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 21405.2 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 20431.3 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 MP2/3-21G
ABC
0.26370 0.14172 0.10125

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Cl1 -0.969 1.011 0.000
C2 0.626 -0.064 0.000
C3 0.626 -0.901 1.282
C4 0.626 -0.901 -1.282
H5 1.426 0.676 0.000
H6 1.547 -1.496 1.320
H7 1.547 -1.496 -1.320
H8 0.580 -0.261 2.166
H9 0.580 -0.261 -2.166
H10 -0.235 -1.576 1.287
H11 -0.235 -1.576 -1.287

Atom - Atom Distances (Å)
  Cl1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11
Cl11.92402.80092.80092.41923.78953.78952.95152.95152.98162.9816
C21.92401.53091.53091.08982.15442.15442.17572.17572.16422.1642
C32.80091.53092.56342.18401.09692.82321.09313.50731.09392.7919
C42.80091.53092.56342.18402.82321.09693.50731.09312.79191.0939
H52.41921.08982.18402.18402.54452.54452.50722.50723.08003.0800
H63.78952.15441.09692.82322.54452.64001.78253.82301.78343.1585
H73.78952.15442.82321.09692.54452.64003.82301.78253.15851.7834
H82.95152.17571.09313.50732.50721.78253.82304.33261.77983.7841
H92.95152.17573.50731.09312.50723.82301.78254.33263.78411.7798
H102.98162.16421.09392.79193.08001.78343.15851.77983.78412.5739
H112.98162.16422.79191.09393.08003.15851.78343.78411.77982.5739

picture of Propane, 2-chloro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl1 C2 C3 107.793 Cl1 C2 C4 107.793
Cl1 C3 H5 56.445 C2 C3 H6 109.022
C2 C3 H8 110.923 C2 C3 H10 109.967
C2 C4 H7 109.022 C2 C4 H9 110.923
C2 C4 H11 109.967 C3 C2 C4 113.697
C3 C2 H5 111.789 C4 C2 H5 111.789
H6 C3 H8 108.963 H6 C3 H10 108.994
H7 C4 H9 108.963 H7 C4 H11 108.994
H8 C3 H10 108.939 H9 C4 H11 108.939
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability