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All results from a given calculation for C3H4O (Cyclopropanone)

using model chemistry: B2PLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-191.675643
Energy at 298.15K-191.679780
HF Energy-191.489306
Nuclear repulsion energy108.413800
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 B2PLYP/6-31G*
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 3166 3005 0.55      
2 A1 1941 1842 253.02      
3 A1 1481 1406 3.00      
4 A1 1071 1017 3.70      
5 A1 1054 1001 24.66      
6 A1 736 698 3.56      
7 A2 3246 3081 0.00      
8 A2 1192 1132 0.00      
9 A2 664 630 0.00      
10 B1 3258 3092 3.35      
11 B1 1129 1072 0.33      
12 B1 724 687 1.26      
13 B1 319 303 4.86      
14 B2 3165 3005 2.55      
15 B2 1464 1389 4.05      
16 B2 1098 1043 17.47      
17 B2 983 933 115.35      
18 B2 509 483 1.75      

Unscaled Zero Point Vibrational Energy (zpe) 13600.1 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 12909.2 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 B2PLYP/6-31G*
ABC
0.67860 0.24591 0.19453

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.408
O2 0.000 0.000 1.683
C3 0.000 0.802 -0.843
C4 0.000 -0.802 -0.843
H5 0.808 0.726 -1.449
H6 -0.808 0.726 -1.449
H7 -0.808 -0.726 -1.449
H8 0.808 -0.726 -1.449

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8
C11.27431.48661.48662.15202.15202.15202.1520
O21.27432.65032.65033.31503.31503.31503.3150
C31.48662.65031.60441.01291.01291.83211.8321
C41.48662.65031.60441.83211.83211.01291.0129
H52.15203.31501.01291.83211.61642.17321.4526
H62.15203.31501.01291.83211.61641.45262.1732
H72.15203.31501.83211.01292.17321.45261.6164
H82.15203.31501.83211.01291.45262.17321.6164

picture of Cyclopropanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 57.343 C1 C3 H5 117.590
C1 C3 H6 117.590 C1 C4 C3 57.343
C1 C4 H7 117.590 C1 C4 H8 117.590
O2 C1 C3 147.343 O2 C1 C4 147.343
C3 C1 C4 65.313 C3 C4 H7 85.703
C3 C4 H8 85.703 C4 C3 H5 85.703
C4 C3 H6 85.703 H5 C3 H6 105.859
H7 C4 H8 105.859
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.416      
2 O -0.385      
3 C -0.406      
4 C -0.406      
5 H 0.195      
6 H 0.195      
7 H 0.195      
8 H 0.195      


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 -2.770 2.770
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.251 0.000 0.000
y 0.000 -22.722 0.000
z 0.000 0.000 -27.699
Traceless
 xyz
x 3.959 0.000 0.000
y 0.000 1.753 0.000
z 0.000 0.000 -5.712
Polar
3z2-r2-11.424
x2-y21.471
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.661 0.000 0.000
y 0.000 4.692 0.000
z 0.000 0.000 5.335


<r2> (average value of r2) Å2
<r2> 67.784
(<r2>)1/2 8.233