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All results from a given calculation for C3H4O (Cyclopropanone)

using model chemistry: MP2=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2=FULL/3-21G
 hartrees
Energy at 0K-190.052048
Energy at 298.15K-190.056337
HF Energy-189.649456
Nuclear repulsion energy106.916100
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=FULL/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 A1 3192 3048 0.35      
2 A1 1808 1726 119.24      
3 A1 1522 1453 6.27      
4 A1 1118 1068 49.08      
5 A1 976 932 0.30      
6 A1 692 661 1.36      
7 A2 3276 3128 0.00      
8 A2 1203 1148 0.00      
9 A2 735 702 0.00      
10 B1 3290 3141 1.68      
11 B1 1161 1108 0.14      
12 B1 754 719 2.05      
13 B1 409 391 1.90      
14 B2 3188 3044 0.69      
15 B2 1510 1442 6.18      
16 B2 1139 1088 1.00      
17 B2 972 928 153.58      
18 B2 519 496 0.21      

Unscaled Zero Point Vibrational Energy (zpe) 13731.9 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 13111.2 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=FULL/3-21G
ABC
0.66066 0.23861 0.18859

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.385
O2 0.000 0.000 1.617
C3 0.000 0.801 -0.875
C4 0.000 -0.801 -0.875
H5 0.917 1.291 -1.185
H6 -0.917 1.291 -1.185
H7 -0.917 -1.291 -1.185
H8 0.917 -1.291 -1.185

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8
C11.23201.49351.49352.23012.23012.23012.2301
O21.23202.61802.61803.21873.21873.21873.2187
C31.49352.61801.60251.08481.08482.30532.3053
C41.49352.61801.60252.30532.30531.08481.0848
H52.23013.21871.08482.30531.83383.16712.5822
H62.23013.21871.08482.30531.83382.58223.1671
H72.23013.21872.30531.08483.16712.58221.8338
H82.23013.21872.30531.08482.58223.16711.8338

picture of Cyclopropanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 57.555 C1 C3 H5 118.907
C1 C3 H6 118.907 C1 C4 C3 57.555
C1 C4 H7 118.907 C1 C4 H8 118.907
O2 C1 C3 147.555 O2 C1 C4 147.555
C3 C1 C4 64.889 C3 C4 H7 116.845
C3 C4 H8 116.845 C4 C3 H5 116.845
C4 C3 H6 116.845 H5 C3 H6 115.397
H7 C4 H8 115.397
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability