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All results from a given calculation for C3H4O (Cyclopropanone)

using model chemistry: QCISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-191.311274
Energy at 298.15K-191.315455
HF Energy-190.723679
Nuclear repulsion energy108.227783
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/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3161 3010 0.33      
2 A1 1959 1866 235.57      
3 A1 1490 1419 2.06      
4 A1 1078 1026 6.78      
5 A1 1074 1023 19.66      
6 A1 741 705 4.58      
7 A2 3239 3085 0.00      
8 A2 1196 1139 0.00      
9 A2 686 653 0.00      
10 B1 3251 3096 4.36      
11 B1 1137 1083 0.21      
12 B1 734 699 1.03      
13 B1 328 312 5.09      
14 B2 3158 3007 2.94      
15 B2 1469 1399 4.83      
16 B2 1121 1068 20.88      
17 B2 1011 963 107.38      
18 B2 513 488 2.54      

Unscaled Zero Point Vibrational Energy (zpe) 13672.3 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 13020.1 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/6-31G*
ABC
0.67708 0.24496 0.19390

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.408
O2 0.000 0.000 1.684
C3 0.000 0.802 -0.843
C4 0.000 -0.802 -0.843
H5 0.809 0.726 -1.450
H6 -0.809 0.726 -1.450
H7 -0.809 -0.726 -1.450
H8 0.809 -0.726 -1.450

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8
C11.27521.48681.48682.15262.15262.15262.1526
O21.27522.65132.65133.31643.31643.31643.3164
C31.48682.65131.60401.01341.01341.83231.8323
C41.48682.65131.60401.83231.83231.01341.0134
H52.15263.31641.01341.83231.61732.17391.4527
H62.15263.31641.01341.83231.61731.45272.1739
H72.15263.31641.83231.01342.17391.45271.6173
H82.15263.31641.83231.01341.45272.17391.6173

picture of Cyclopropanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 57.355 C1 C3 H5 117.603
C1 C3 H6 117.603 C1 C4 C3 57.355
C1 C4 H7 117.603 C1 C4 H8 117.603
O2 C1 C3 147.355 O2 C1 C4 147.355
C3 C1 C4 65.289 C3 C4 H7 85.718
C3 C4 H8 85.718 C4 C3 H5 85.718
C4 C3 H6 85.718 H5 C3 H6 105.868
H7 C4 H8 105.868
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability