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All results from a given calculation for C3H4O (Cyclopropanone)

using model chemistry: HF/CEP-121G*

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-121G*
 hartrees
Energy at 0K-34.425231
Energy at 298.15K-34.429570
HF Energy-34.425231
Nuclear repulsion energy58.312103
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-121G*
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 3279 2962 0.00      
2 A1 2099 1896 445.68      
3 A1 1573 1421 0.36      
4 A1 1145 1034 13.18      
5 A1 1119 1011 0.04      
6 A1 776 701 13.08      
7 A2 3364 3039 0.00      
8 A2 1266 1144 0.00      
9 A2 709 641 0.00      
10 B1 3377 3051 17.28      
11 B1 1217 1099 0.06      
12 B1 752 679 0.34      
13 B1 366 331 8.82      
14 B2 3274 2958 11.05      
15 B2 1548 1399 3.59      
16 B2 1196 1080 21.81      
17 B2 1057 955 123.10      
18 B2 541 489 5.18      

Unscaled Zero Point Vibrational Energy (zpe) 14328.4 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 12944.2 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-121G*
ABC
0.68010 0.25016 0.19718

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.410
O2 0.000 0.000 1.596
C3 0.000 0.785 -0.836
C4 0.000 -0.785 -0.836
H5 0.910 1.284 -1.132
H6 -0.910 1.284 -1.132
H7 -0.910 -1.284 -1.132
H8 0.910 -1.284 -1.132

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8
C11.18591.47221.47222.20262.20262.20262.2026
O21.18592.55492.55493.14863.14863.14863.1486
C31.47222.55491.57091.07901.07902.27972.2797
C41.47222.55491.57092.27972.27971.07901.0790
H52.20263.14861.07902.27971.82033.14712.5672
H62.20263.14861.07902.27971.82032.56723.1471
H72.20263.14862.27971.07903.14712.56721.8203
H82.20263.14862.27971.07902.56723.14711.8203

picture of Cyclopropanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 57.759 C1 C3 H5 118.582
C1 C3 H6 118.582 C1 C4 C3 57.759
C1 C4 H7 118.582 C1 C4 H8 118.582
O2 C1 C3 147.759 O2 C1 C4 147.759
C3 C1 C4 64.483 C3 C4 H7 117.499
C3 C4 H8 117.499 C4 C3 H5 117.499
C4 C3 H6 117.499 H5 C3 H6 115.026
H7 C4 H8 115.026
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.389      
2 O -0.311      
3 C -0.453      
4 C -0.453      
5 H 0.207      
6 H 0.207      
7 H 0.207      
8 H 0.207      


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 -3.280 3.280
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.363 0.000 0.000
y 0.000 -22.795 0.000
z 0.000 0.000 -28.973
Traceless
 xyz
x 4.521 0.000 0.000
y 0.000 2.373 0.000
z 0.000 0.000 -6.894
Polar
3z2-r2-13.788
x2-y21.432
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.852 0.000 0.000
y 0.000 4.970 0.000
z 0.000 0.000 5.533


<r2> (average value of r2) Å2
<r2> 56.719
(<r2>)1/2 7.531