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All results from a given calculation for C3H4O (Cyclopropanone)

using model chemistry: B3PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/6-31+G**
 hartrees
Energy at 0K-191.823277
Energy at 298.15K-191.827372
HF Energy-191.823277
Nuclear repulsion energy108.658680
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 B3PW91/6-31+G**
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 3136 3011 1.42      
2 A1 1957 1879 357.34      
3 A1 1436 1379 5.23      
4 A1 1072 1029 2.19      
5 A1 1021 980 32.10      
6 A1 737 708 4.92      
7 A2 3219 3091 0.00      
8 A2 1162 1116 0.00      
9 A2 637 611 0.00      
10 B1 3231 3102 1.08      
11 B1 1105 1061 0.40      
12 B1 706 678 1.91      
13 B1 308 295 5.30      
14 B2 3136 3011 2.40      
15 B2 1415 1358 7.58      
16 B2 1075 1032 18.25      
17 B2 970 931 108.35      
18 B2 504 484 1.72      

Unscaled Zero Point Vibrational Energy (zpe) 13413.0 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 12877.8 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 B3PW91/6-31+G**
ABC
0.67889 0.24769 0.19570

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.382
O2 0.000 0.000 1.584
C3 0.000 0.784 -0.859
C4 0.000 -0.784 -0.859
H5 0.915 1.289 -1.162
H6 -0.915 1.289 -1.162
H7 -0.915 -1.289 -1.162
H8 0.915 -1.289 -1.162

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8
C11.20251.46801.46802.20982.20982.20982.2098
O21.20252.56632.56633.16903.16903.16903.1690
C31.46802.56631.56811.08831.08832.28652.2865
C41.46802.56631.56812.28652.28651.08831.0883
H52.20983.16901.08832.28651.83013.16212.5786
H62.20983.16901.08832.28651.83012.57863.1621
H72.20983.16902.28651.08833.16212.57861.8301
H82.20983.16902.28651.08832.57863.16211.8301

picture of Cyclopropanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 57.718 C1 C3 H5 118.896
C1 C3 H6 118.896 C1 C4 C3 57.718
C1 C4 H7 118.896 C1 C4 H8 118.896
O2 C1 C3 147.718 O2 C1 C4 147.718
C3 C1 C4 64.565 C3 C4 H7 117.663
C3 C4 H8 117.663 C4 C3 H5 117.663
C4 C3 H6 117.663 H5 C3 H6 114.459
H7 C4 H8 114.459
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.132      
2 O -0.432      
3 C -0.237      
4 C -0.237      
5 H 0.194      
6 H 0.194      
7 H 0.194      
8 H 0.194      


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 -3.094 3.094
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.394 0.000 0.000
y 0.000 -22.872 0.000
z 0.000 0.000 -28.514
Traceless
 xyz
x 4.299 0.000 0.000
y 0.000 2.082 0.000
z 0.000 0.000 -6.381
Polar
3z2-r2-12.762
x2-y21.479
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.081 0.000 0.000
y 0.000 5.466 0.000
z 0.000 0.000 6.384


<r2> (average value of r2) Å2
<r2> 67.747
(<r2>)1/2 8.231