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All results from a given calculation for C3H4O (Cyclopropanone)

using model chemistry: HF/CEP-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 HF/CEP-31G*
 hartrees
Energy at 0K-34.414432
Energy at 298.15K-34.418731
HF Energy-34.414432
Nuclear repulsion energy57.987939
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 HF/CEP-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 3315 2977 0.10      
2 A1 2136 1918 449.18      
3 A1 1578 1417 0.09      
4 A1 1138 1022 12.33      
5 A1 1134 1019 0.00      
6 A1 774 695 15.25      
7 A2 3402 3055 0.00      
8 A2 1257 1129 0.00      
9 A2 679 610 0.00      
10 B1 3416 3067 24.48      
11 B1 1211 1087 0.23      
12 B1 735 660 1.05      
13 B1 369 331 10.05      
14 B2 3310 2973 15.59      
15 B2 1544 1387 4.36      
16 B2 1191 1070 30.45      
17 B2 1056 948 111.91      
18 B2 533 479 6.48      

Unscaled Zero Point Vibrational Energy (zpe) 14388.9 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 12921.2 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 HF/CEP-31G*
ABC
0.67273 0.24708 0.19481

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.413
O2 0.000 0.000 1.605
C3 0.000 0.790 -0.842
C4 0.000 -0.790 -0.842
H5 0.915 1.288 -1.137
H6 -0.915 1.288 -1.137
H7 -0.915 -1.288 -1.137
H8 0.915 -1.288 -1.137

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8
C11.19211.48281.48282.21322.21322.21322.2132
O21.19212.57122.57123.16453.16453.16453.1645
C31.48282.57121.58081.08281.08282.29022.2902
C41.48282.57121.58082.29022.29021.08281.0828
H52.21323.16451.08282.29021.83063.16032.5762
H62.21323.16451.08282.29021.83062.57623.1603
H72.21323.16452.29021.08283.16032.57621.8306
H82.21323.16452.29021.08282.57623.16031.8306

picture of Cyclopropanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 57.789 C1 C3 H5 118.398
C1 C3 H6 118.398 C1 C4 C3 57.789
C1 C4 H7 118.398 C1 C4 H8 118.398
O2 C1 C3 147.789 O2 C1 C4 147.789
C3 C1 C4 64.422 C3 C4 H7 117.364
C3 C4 H8 117.364 C4 C3 H5 117.364
C4 C3 H6 117.364 H5 C3 H6 115.399
H7 C4 H8 115.399
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.102      
2 O -0.136      
3 C -0.322      
4 C -0.322      
5 H 0.169      
6 H 0.169      
7 H 0.169      
8 H 0.169      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -3.263 3.263
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.260 0.000 0.000
y 0.000 -22.822 0.000
z 0.000 0.000 -29.138
Traceless
 xyz
x 4.720 0.000 0.000
y 0.000 2.377 0.000
z 0.000 0.000 -7.097
Polar
3z2-r2-14.194
x2-y21.562
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.454 0.000 0.000
y 0.000 4.859 0.000
z 0.000 0.000 5.447


<r2> (average value of r2) Å2
<r2> 57.204
(<r2>)1/2 7.563