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All results from a given calculation for C3H4O (Cyclopropanone)

using model chemistry: PBEPBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-191.666510
Energy at 298.15K-191.670501
HF Energy-191.666510
Nuclear repulsion energy108.117058
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 PBEPBE/6-31G(2df,p)
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 3055 3023 0.73      
2 A1 1903 1884 267.44      
3 A1 1375 1360 5.54      
4 A1 1042 1031 0.84      
5 A1 977 967 25.14      
6 A1 727 720 2.49      
7 A2 3136 3103 0.00      
8 A2 1130 1118 0.00      
9 A2 581 575 0.00      
10 B1 3149 3117 1.31      
11 B1 1064 1053 0.19      
12 B1 677 670 1.64      
13 B1 304 301 3.30      
14 B2 3055 3023 2.40      
15 B2 1362 1348 4.34      
16 B2 1020 1010 20.18      
17 B2 909 899 98.03      
18 B2 497 492 0.69      

Unscaled Zero Point Vibrational Energy (zpe) 12980.7 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 12847.0 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 PBEPBE/6-31G(2df,p)
ABC
0.67417 0.24475 0.19359

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G(2df,p)

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 1.593
C3 0.000 0.786 -0.865
C4 0.000 -0.786 -0.865
H5 0.919 1.296 -1.172
H6 -0.919 1.296 -1.172
H7 -0.919 -1.296 -1.172
H8 0.919 -1.296 -1.172

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8
C11.20511.47871.47872.22612.22612.22612.2261
O21.20512.58012.58013.18853.18853.18853.1885
C31.47872.58011.57241.09461.09462.29632.2963
C41.47872.58011.57242.29632.29631.09461.0946
H52.22613.18851.09462.29631.83733.17692.5916
H62.22613.18851.09462.29631.83732.59163.1769
H72.22613.18852.29631.09463.17692.59161.8373
H82.22613.18852.29631.09462.59163.17691.8373

picture of Cyclopropanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 57.882 C1 C3 H5 119.030
C1 C3 H6 119.030 C1 C4 C3 57.882
C1 C4 H7 119.030 C1 C4 H8 119.030
O2 C1 C3 147.882 O2 C1 C4 147.882
C3 C1 C4 64.237 C3 C4 H7 117.750
C3 C4 H8 117.750 C4 C3 H5 117.750
C4 C3 H6 117.750 H5 C3 H6 114.133
H7 C4 H8 114.133
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.413      
2 O -0.247      
3 C -0.393      
4 C -0.393      
5 H 0.155      
6 H 0.155      
7 H 0.155      
8 H 0.155      


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 -2.584 2.584
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.122 0.000 0.000
y 0.000 -22.552 0.000
z 0.000 0.000 -27.195
Traceless
 xyz
x 3.751 0.000 0.000
y 0.000 1.607 0.000
z 0.000 0.000 -5.358
Polar
3z2-r2-10.716
x2-y21.430
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.014 0.000 0.000
y 0.000 5.153 0.000
z 0.000 0.000 5.721


<r2> (average value of r2) Å2
<r2> 67.927
(<r2>)1/2 8.242