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All results from a given calculation for C3H4O (Cyclopropanone)

using model chemistry: G3B3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at G3B3
 hartrees
Energy at 0K-191.746577
Energy at 298.15K-191.741552
Nuclear repulsion energy 
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 B3LYP/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 3131 3006 0.40      
2 A1 1956 1878 286.77      
3 A1 1461 1403 3.75      
4 A1 1063 1021 1.88      
5 A1 1036 995 25.94      
6 A1 728 699 3.79      
7 A2 3205 3078 0.00      
8 A2 1176 1130 0.00      
9 A2 651 625 0.00      
10 B1 3218 3090 4.65      
11 B1 1115 1071 0.44      
12 B1 713 684 1.42      
13 B1 316 304 5.07      
14 B2 3130 3006 3.62      
15 B2 1444 1387 3.93      
16 B2 1081 1038 18.04      
17 B2 967 928 115.52      
18 B2 505 485 1.69      

Unscaled Zero Point Vibrational Energy (zpe) 13447.5 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 12913.6 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 B3LYP/6-31G*
ABC
0.67638 0.24632 0.19461

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

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 1.588
C3 0.000 0.786 -0.862
C4 0.000 -0.786 -0.862
H5 0.914 1.293 -1.166
H6 -0.914 1.293 -1.166
H7 -0.914 -1.293 -1.166
H8 0.914 -1.293 -1.166

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8
C11.20271.47441.47442.21712.21712.21712.2171
O21.20272.57322.57323.17723.17723.17723.1772
C31.47442.57321.57131.08891.08892.29112.2911
C41.47442.57321.57132.29112.29111.08891.0889
H52.21713.17721.08892.29111.82843.16722.5861
H62.21713.17721.08892.29111.82842.58613.1672
H72.21713.17722.29111.08893.16722.58611.8284
H82.21713.17722.29111.08892.58613.16721.8284

picture of Cyclopropanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 57.802 C1 C3 H5 118.985
C1 C3 H6 118.985 C1 C4 C3 57.802
C1 C4 H7 118.985 C1 C4 H8 118.985
O2 C1 C3 147.802 O2 C1 C4 147.802
C3 C1 C4 64.396 C3 C4 H7 117.774
C3 C4 H8 117.774 C4 C3 H5 117.774
C4 C3 H6 117.774 H5 C3 H6 114.191
H7 C4 H8 114.191
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.416      
2 O -0.395      
3 C -0.381      
4 C -0.381      
5 H 0.186      
6 H 0.186      
7 H 0.186      
8 H 0.186      


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 -2.778 2.778
CHELPG 0.000 0.000 -2.829 2.829
AIM 0.000 0.000 1.771 1.771
ESP 0.020 0.000 -2.789 2.789


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 67.704
(<r2>)1/2 8.228