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All results from a given calculation for C3H4O (Cyclopropanone)

using model chemistry: QCISD/6-311G*

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/6-311G*
 hartrees
Energy at 0K-191.387418
Energy at 298.15K-191.391586
HF Energy-190.765021
Nuclear repulsion energy108.360133
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/6-311G*
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 3131 2997 0.11      
2 A1 1955 1872 262.83      
3 A1 1471 1409 3.21      
4 A1 1063 1018 3.93      
5 A1 1050 1006 24.48      
6 A1 732 701 5.53      
7 A2 3213 3076 0.00      
8 A2 1184 1134 0.00      
9 A2 670 641 0.00      
10 B1 3225 3088 6.63      
11 B1 1128 1080 0.06      
12 B1 722 691 0.95      
13 B1 330 316 3.83      
14 B2 3127 2994 4.39      
15 B2 1449 1388 7.70      
16 B2 1096 1050 17.66      
17 B2 981 939 112.87      
18 B2 513 492 1.71      

Unscaled Zero Point Vibrational Energy (zpe) 13520.3 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 12944.3 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/6-311G*
ABC
0.67472 0.24609 0.19442

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.388
O2 0.000 0.000 1.587
C3 0.000 0.788 -0.863
C4 0.000 -0.788 -0.863
H5 0.917 1.289 -1.168
H6 -0.917 1.289 -1.168
H7 -0.917 -1.289 -1.168
H8 0.917 -1.289 -1.168

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8
C11.19901.47881.47882.21932.21932.21932.2193
O21.19902.57402.57403.17743.17743.17743.1774
C31.47882.57401.57591.08851.08852.29052.2905
C41.47882.57401.57592.29052.29051.08851.0885
H52.21933.17741.08852.29051.83413.16322.5772
H62.21933.17741.08852.29051.83412.57723.1632
H72.21933.17742.29051.08853.16322.57721.8341
H82.21933.17742.29051.08852.57723.16321.8341

picture of Cyclopropanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 57.804 C1 C3 H5 118.846
C1 C3 H6 118.846 C1 C4 C3 57.804
C1 C4 H7 118.846 C1 C4 H8 118.846
O2 C1 C3 147.804 O2 C1 C4 147.804
C3 C1 C4 64.392 C3 C4 H7 117.381
C3 C4 H8 117.381 C4 C3 H5 117.381
C4 C3 H6 117.381 H5 C3 H6 114.807
H7 C4 H8 114.807
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability