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 CH2CHCH3 (Propene)

using model chemistry: QCISD/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 QCISD/CEP-31G
 hartrees
Energy at 0K-20.159248
Energy at 298.15K-20.164751
HF Energy-19.873031
Nuclear repulsion energy39.302648
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/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' 3178 3031 64.02      
2 A' 3100 2956 18.76      
3 A' 3079 2936 63.95      
4 A' 3062 2920 20.85      
5 A' 2973 2835 45.66      
6 A' 1661 1584 5.84      
7 A' 1502 1433 11.43      
8 A' 1457 1389 2.71      
9 A' 1432 1366 1.44      
10 A' 1312 1251 0.10      
11 A' 1190 1135 0.74      
12 A' 944 901 3.98      
13 A' 907 865 0.51      
14 A' 410 391 0.49      
15 A" 3043 2902 61.45      
16 A" 1481 1413 9.26      
17 A" 1074 1024 2.27      
18 A" 976 931 33.53      
19 A" 854 815 55.37      
20 A" 566 539 14.91      
21 A" 180 172 0.36      

Unscaled Zero Point Vibrational Energy (zpe) 17190.7 cm-1
Scaled (by 0.9537) Zero Point Vibrational Energy (zpe) 16394.8 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/CEP-31G
ABC
1.45602 0.29096 0.25450

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.184 -0.498 0.000
C2 0.000 0.500 0.000
C3 1.340 0.122 0.000
H4 1.645 -0.942 0.000
H5 2.149 0.878 0.000
H6 -0.258 1.579 0.000
H7 -0.816 -1.551 0.000
H8 -1.829 -0.352 0.901
H9 -1.829 -0.352 -0.901

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9
C11.54912.59962.86403.60642.27451.11531.11791.1179
C21.54911.39292.18792.18211.10912.20792.21002.2100
C32.59961.39291.10641.10742.16312.72933.32893.3289
H42.86402.18791.10641.88853.15882.53573.63733.6373
H53.60642.18211.10741.88852.50723.83344.26044.2604
H62.27451.10912.16313.15882.50723.17962.64762.6476
H71.11532.20792.72932.53573.83343.17961.80991.8099
H81.11792.21003.32893.63734.26042.64761.80991.8030
H91.11792.21003.32893.63734.26042.64761.80991.8030

picture of Propene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 124.080 C1 C2 H6 116.691
C2 C1 H7 110.877 C2 C1 H8 110.890
C2 C1 H9 110.890 C2 C3 H4 121.770
C2 C3 H5 121.135 C3 C2 H6 119.229
H4 C3 H5 117.095 H7 C1 H8 108.281
H7 C1 H9 108.281 H8 C1 H9 107.498
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability