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All results from a given calculation for CHOCHCHCH3 (2-Butenal)

using model chemistry: PM3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at PM3
 hartrees
Energy at 0K 
Energy at 298.15K-0.046209
HF Energy-0.046209
Nuclear repulsion energy102.486268
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 PM3
Rotational Constants (cm-1) from geometry optimized at PM3
ABC
1.05265 0.07391 0.06997

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM3

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.362 -0.427 0.000
C2 0.904 -0.670 0.000
C3 0.000 0.313 0.000
C4 -1.449 0.018 0.000
O5 -2.290 0.890 0.000
H6 -1.751 -1.043 0.000
H7 0.300 1.369 0.000
H8 0.590 -1.723 0.000
H9 2.621 0.640 0.000
H10 2.826 -0.883 0.886
H11 2.826 -0.883 -0.886

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 H6 H7 H8 H9 H10 H11
C11.47822.47573.83744.83504.15952.73472.19551.09811.09861.0986
C21.47821.33582.45193.55462.68162.12661.09902.15942.12682.1268
C32.47571.33581.47872.36132.21491.09792.11992.64133.19393.1939
C43.83742.45191.47871.21101.10332.21042.68134.11724.45794.4579
O54.83503.55462.36131.21102.00642.63433.88854.91725.48625.4862
H64.15952.68162.21491.10332.00643.16672.43804.68494.66504.6650
H72.73472.12661.09792.21042.63433.16673.10572.43243.49763.4976
H82.19551.09902.11992.68133.88852.43803.10573.11582.54782.5478
H91.09812.15942.64134.11724.91724.68492.43243.11581.77331.7733
H101.09862.12683.19394.45795.48624.66503.49762.54781.77331.7716
H111.09862.12683.19394.45795.48624.66503.49762.54781.77331.7716

picture of 2-Butenal state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 123.158 C1 C2 H8 116.067
C2 C1 H9 113.071 C2 C1 H10 110.384
C2 C1 H11 110.384 C2 C3 C4 121.102
C2 C3 H7 121.508 C3 C2 H8 120.776
C3 C4 O5 122.463 C3 C4 H6 117.403
C4 C3 H7 117.390 O5 C4 H6 120.135
H9 C1 H10 107.659 H9 C1 H11 107.659
H10 C1 H11 107.472
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability