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 CH2CClCHCH2 (1,3-Butadiene, 2-chloro-)

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-39.759148
Energy at 298.15K 
HF Energy-39.405540
Nuclear repulsion energy77.587164
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' 3269 3159 37.76 6.36 0.42 0.59
2 A' 3269 3159 0.24 105.36 0.71 0.83
3 A' 3168 3062 15.57 164.37 0.24 0.39
4 A' 3157 3051 8.72 95.05 0.22 0.36
5 A' 3144 3038 10.58 17.44 0.75 0.86
6 A' 1665 1608 6.43 77.46 0.32 0.48
7 A' 1600 1546 28.94 2.30 0.65 0.79
8 A' 1481 1432 0.73 43.38 0.46 0.63
9 A' 1421 1374 1.30 1.96 0.56 0.72
10 A' 1339 1294 1.35 17.85 0.26 0.41
11 A' 1245 1203 44.82 12.53 0.44 0.61
12 A' 1038 1003 9.08 3.06 0.75 0.86
13 A' 899 869 5.40 0.82 0.28 0.44
14 A' 589 569 18.61 14.13 0.19 0.32
15 A' 508 491 2.29 7.21 0.75 0.86
16 A' 371 358 0.92 6.12 0.75 0.86
17 A' 235 227 0.10 4.20 0.71 0.83
18 A" 993 960 58.89 1.95 0.75 0.86
19 A" 844 816 57.88 6.02 0.75 0.86
20 A" 820 792 73.09 6.86 0.75 0.86
21 A" 724 699 1.08 8.12 0.75 0.86
22 A" 648 626 0.82 1.84 0.75 0.86
23 A" 404 390 11.68 1.24 0.75 0.86
24 A" 134 129 0.14 1.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16482.1 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 15926.6 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-31G
ABC
0.16626 0.11483 0.06792

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 -0.376 1.948 0.000
C2 0.000 0.612 0.000
C3 1.423 0.135 0.000
C4 1.850 -1.188 0.000
Cl5 -1.329 -0.678 0.000
H6 0.403 2.726 0.000
H7 -1.428 2.262 0.000
H8 2.167 0.950 0.000
H9 2.926 -1.418 0.000
H10 1.146 -2.031 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 Cl5 H6 H7 H8 H9 H10
C11.38802.55463.84542.79431.10061.09792.73174.71554.2606
C21.38801.50132.58081.85262.15212.18192.19323.56162.8811
C32.55461.50131.38942.87032.78513.55731.10352.16102.1835
C43.84542.58081.38943.21964.17274.75842.16111.10111.0981
Cl52.79431.85262.87033.21963.81982.94183.85694.31962.8213
H61.10062.15212.78514.17273.81981.88872.50344.85204.8150
H71.09792.18193.55734.75842.94181.88873.82685.70105.0057
H82.73172.19321.10352.16113.85692.50343.82682.48673.1509
H94.71553.56162.16101.10114.31964.85205.70102.48671.8826
H104.26062.88112.18351.09812.82134.81505.00573.15091.8826

picture of 1,3-Butadiene, 2-chloro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 124.244 C1 C2 Cl5 118.443
C2 C1 H6 119.266 C2 C1 H7 122.301
C2 C3 C4 126.409 C2 C3 H8 113.829
C3 C2 Cl5 117.313 C3 C4 H9 119.937
C3 C4 H10 122.310 C4 C3 H8 119.762
H6 C1 H7 118.433 H9 C4 H10 117.753
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability