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All results from a given calculation for C3H4O (Cyclopropanone)

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-190.750681
Energy at 298.15K-190.754934
HF Energy-190.750681
Nuclear repulsion energy107.861750
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 B3PW91/3-21G*
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 3156 3028 1.22      
2 A1 1912 1835 196.55      
3 A1 1468 1409 11.46      
4 A1 1068 1025 60.57      
5 A1 1019 978 0.73      
6 A1 719 690 3.91      
7 A2 3236 3105 0.00      
8 A2 1178 1131 0.00      
9 A2 689 661 0.00      
10 B1 3251 3119 0.50      
11 B1 1136 1090 0.60      
12 B1 730 700 3.64      
13 B1 411 395 2.11      
14 B2 3153 3025 0.38      
15 B2 1453 1394 12.61      
16 B2 1102 1057 0.65      
17 B2 980 940 162.30      
18 B2 518 497 0.50      

Unscaled Zero Point Vibrational Energy (zpe) 13590.4 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 13038.6 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 B3PW91/3-21G*
ABC
0.67312 0.24297 0.19236

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

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 1.600
C3 0.000 0.790 -0.868
C4 0.000 -0.790 -0.868
H5 0.918 1.286 -1.173
H6 -0.918 1.286 -1.173
H7 -0.918 -1.286 -1.173
H8 0.918 -1.286 -1.173

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8
C11.21551.48131.48132.21832.21832.21832.2183
O21.21552.59192.59193.19133.19133.19133.1913
C31.48132.59191.58021.08661.08662.29022.2902
C41.48132.59191.58022.29022.29021.08661.0866
H52.21833.19131.08662.29021.83543.15972.5720
H62.21833.19131.08662.29021.83542.57203.1597
H72.21833.19132.29021.08663.15972.57201.8354
H82.21833.19132.29021.08662.57203.15971.8354

picture of Cyclopropanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 57.765 C1 C3 H5 118.706
C1 C3 H6 118.706 C1 C4 C3 57.765
C1 C4 H7 118.706 C1 C4 H8 118.706
O2 C1 C3 147.765 O2 C1 C4 147.765
C3 C1 C4 64.469 C3 C4 H7 117.153
C3 C4 H8 117.153 C4 C3 H5 117.153
C4 C3 H6 117.153 H5 C3 H6 115.251
H7 C4 H8 115.251
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.336      
2 O -0.433      
3 C -0.473      
4 C -0.473      
5 H 0.261      
6 H 0.261      
7 H 0.261      
8 H 0.261      


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 -2.633 2.633
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.278 0.000 0.000
y 0.000 -22.633 0.000
z 0.000 0.000 -27.859
Traceless
 xyz
x 3.968 0.000 0.000
y 0.000 1.935 0.000
z 0.000 0.000 -5.904
Polar
3z2-r2-11.807
x2-y21.355
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.357 0.000 0.000
y 0.000 4.360 0.000
z 0.000 0.000 4.866


<r2> (average value of r2) Å2
<r2> 68.338
(<r2>)1/2 8.267