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All results from a given calculation for C3H4O (Cyclopropanone)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-190.045306
Energy at 298.15K-190.049594
HF Energy-189.649412
Nuclear repulsion energy106.899534
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 MP2/3-21G
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 3191 3046 0.34      
2 A1 1808 1725 119.24      
3 A1 1522 1453 6.23      
4 A1 1118 1067 48.99      
5 A1 975 931 0.29      
6 A1 692 660 1.37      
7 A2 3276 3126 0.00      
8 A2 1203 1148 0.00      
9 A2 735 702 0.00      
10 B1 3289 3140 1.71      
11 B1 1160 1108 0.13      
12 B1 753 719 2.04      
13 B1 409 391 1.90      
14 B2 3187 3042 0.72      
15 B2 1510 1442 6.13      
16 B2 1139 1087 0.96      
17 B2 972 928 153.61      
18 B2 519 496 0.21      

Unscaled Zero Point Vibrational Energy (zpe) 13729.2 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 13104.5 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 MP2/3-21G
ABC
0.66039 0.23855 0.18853

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

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 -0.876
C4 0.000 -0.801 -0.876
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
C11.23201.49381.49382.23052.23052.23052.2305
O21.23202.61832.61833.21923.21923.21923.2192
C31.49382.61831.60281.08491.08492.30582.3058
C41.49382.61831.60282.30582.30581.08491.0849
H52.23053.21921.08492.30581.83413.16762.5826
H62.23053.21921.08492.30581.83412.58263.1676
H72.23053.21922.30581.08493.16762.58261.8341
H82.23053.21922.30581.08492.58263.16761.8341

picture of Cyclopropanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 57.554 C1 C3 H5 118.906
C1 C3 H6 118.906 C1 C4 C3 57.554
C1 C4 H7 118.906 C1 C4 H8 118.906
O2 C1 C3 147.554 O2 C1 C4 147.554
C3 C1 C4 64.891 C3 C4 H7 116.843
C3 C4 H8 116.843 C4 C3 H5 116.843
C4 C3 H6 116.843 H5 C3 H6 115.401
H7 C4 H8 115.401
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability