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(TQ)/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 QCISD(TQ)/3-21G
 hartrees
Energy at 0K-116.741335
Energy at 298.15K-116.746929
HF Energy-116.421269
Nuclear repulsion energy69.927046
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(TQ)/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' 3181 3181        
2 A' 3110 3110        
3 A' 3099 3099        
4 A' 3073 3073        
5 A' 3005 3005        
6 A' 1674 1674        
7 A' 1571 1571        
8 A' 1501 1501        
9 A' 1469 1469        
10 A' 1358 1358        
11 A' 1212 1212        
12 A' 993 993        
13 A' 888 888        
14 A' 435 435        
15 A" 3057 3057        
16 A" 1558 1558        
17 A" 1110 1110        
18 A" 1011 1011        
19 A" 927 927        
20 A" 578 578        
21 A" 182 182        

Unscaled Zero Point Vibrational Energy (zpe) 17495.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 17495.4 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(TQ)/3-21G
ABC
1.51497 0.30302 0.26522

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.153 -0.514 0.000
C2 0.000 0.490 0.000
C3 1.304 0.149 0.000
H4 1.624 -0.896 0.000
H5 2.098 0.897 0.000
H6 -0.285 1.546 0.000
H7 -0.765 -1.543 0.000
H8 -1.788 -0.379 0.891
H9 -1.788 -0.379 -0.891

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9
C11.52872.54482.80283.54372.23531.10061.10181.1018
C21.52871.34772.13442.13681.09412.17262.17802.1780
C32.54481.34771.09251.09072.11602.67303.26023.2602
H42.80282.13441.09251.85433.09932.47483.56323.5632
H53.54372.13681.09071.85432.46973.76184.18534.1853
H62.23531.09412.11603.09932.46973.12682.59932.5993
H71.10062.17262.67302.47483.76183.12681.78761.7876
H81.10182.17803.26023.56324.18532.59931.78761.7813
H91.10182.17803.26023.56324.18532.59931.78761.7813

picture of Propene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 124.315 C1 C2 H6 115.923
C2 C1 H7 110.380 C2 C1 H8 110.734
C2 C1 H9 110.734 C2 C3 H4 121.665
C2 C3 H5 122.051 C3 C2 H6 119.762
H4 C3 H5 116.284 H7 C1 H8 108.519
H7 C1 H9 108.519 H8 C1 H9 107.869
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability