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All results from a given calculation for C3H4O (Cyclopropanone)

using model chemistry: B3LYP/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 B3LYP/CEP-121G
 hartrees
Energy at 0K-35.207703
Energy at 298.15K-35.211810
HF Energy-35.207703
Nuclear repulsion energy56.950546
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/CEP-121G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3088 3009 0.01      
2 A1 1818 1771 269.57      
3 A1 1442 1405 4.57      
4 A1 1051 1024 37.68      
5 A1 1020 994 0.83      
6 A1 684 667 7.68      
7 A2 3180 3099 0.00      
8 A2 1156 1127 0.00      
9 A2 710 692 0.00      
10 B1 3196 3114 15.32      
11 B1 1105 1077 0.06      
12 B1 713 694 2.45      
13 B1 303 295 4.04      
14 B2 3082 3004 6.77      
15 B2 1431 1394 7.91      
16 B2 1086 1058 2.57      
17 B2 977 952 142.36      
18 B2 476 464 1.58      

Unscaled Zero Point Vibrational Energy (zpe) 13258.3 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 12920.2 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 B3LYP/CEP-121G
ABC
0.65449 0.23708 0.18711

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.407
O2 0.000 0.000 1.645
C3 0.000 0.803 -0.857
C4 0.000 -0.803 -0.857
H5 0.916 1.308 -1.160
H6 -0.916 1.308 -1.160
H7 -0.916 -1.308 -1.160
H8 0.916 -1.308 -1.160

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8
C11.23881.49751.49752.23702.23702.23702.2370
O21.23882.62842.62843.22793.22793.22793.2279
C31.49752.62841.60581.08921.08922.32122.3212
C41.49752.62841.60582.32122.32121.08921.0892
H52.23703.22791.08922.32121.83263.19452.6166
H62.23703.22791.08922.32121.83262.61663.1945
H72.23703.22792.32121.08923.19452.61661.8326
H82.23703.22792.32121.08922.61663.19451.8326

picture of Cyclopropanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 57.576 C1 C3 H5 118.879
C1 C3 H6 118.879 C1 C4 C3 57.576
C1 C4 H7 118.879 C1 C4 H8 118.879
O2 C1 C3 147.576 O2 C1 C4 147.576
C3 C1 C4 64.848 C3 C4 H7 117.645
C3 C4 H8 117.645 C4 C3 H5 117.645
C4 C3 H6 117.645 H5 C3 H6 114.550
H7 C4 H8 114.550
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.054      
2 O -0.070      
3 C -0.355      
4 C -0.355      
5 H 0.181      
6 H 0.181      
7 H 0.181      
8 H 0.181      


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 -21.590 0.000 0.000
y 0.000 -23.002 0.000
z 0.000 0.000 -29.407
Traceless
 xyz
x 4.614 0.000 0.000
y 0.000 2.497 0.000
z 0.000 0.000 -7.111
Polar
3z2-r2-14.222
x2-y21.411
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.975 0.000 0.000
y 0.000 5.254 0.000
z 0.000 0.000 6.121


<r2> (average value of r2) Å2
<r2> 58.933
(<r2>)1/2 7.677