return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C3H4O (Cyclopropanone)

using model chemistry: B3LYP/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-191.849393
Energy at 298.15K-191.853515
HF Energy-191.849393
Nuclear repulsion energy107.078796
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/LANL2DZ
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 3146 3024 0.29      
2 A1 1864 1792 282.27      
3 A1 1453 1396 8.76      
4 A1 1061 1020 45.19      
5 A1 1037 996 3.31      
6 A1 696 669 6.70      
7 A2 3238 3113 0.00      
8 A2 1161 1116 0.00      
9 A2 709 681 0.00      
10 B1 3253 3127 10.92      
11 B1 1112 1069 0.77      
12 B1 719 691 5.76      
13 B1 322 309 3.94      
14 B2 3141 3019 3.23      
15 B2 1441 1385 14.92      
16 B2 1105 1062 0.10      
17 B2 991 952 148.90      
18 B2 491 472 1.45      

Unscaled Zero Point Vibrational Energy (zpe) 13468.9 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 12946.3 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/LANL2DZ
ABC
0.65996 0.24011 0.18938

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/LANL2DZ

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 1.612
C3 0.000 0.799 -0.873
C4 0.000 -0.799 -0.873
H5 0.914 1.304 -1.179
H6 -0.914 1.304 -1.179
H7 -0.914 -1.304 -1.179
H8 0.914 -1.304 -1.179

Atom - Atom Distances (Å)
  C1 O2 C3 C4 H5 H6 H7 H8
C11.23021.48801.48802.22982.22982.22982.2298
O21.23022.61072.61073.21333.21333.21333.2133
C31.48802.61071.59791.08821.08822.31332.3133
C41.48802.61071.59792.31332.31331.08821.0882
H52.22983.21331.08822.31331.82833.18502.6080
H62.22983.21331.08822.31331.82832.60803.1850
H72.22983.21332.31331.08823.18502.60801.8283
H82.22983.21332.31331.08822.60803.18501.8283

picture of Cyclopropanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C4 57.525 C1 C3 H5 119.080
C1 C3 H6 119.080 C1 C4 C3 57.525
C1 C4 H7 119.080 C1 C4 H8 119.080
O2 C1 C3 147.525 O2 C1 C4 147.525
C3 C1 C4 64.950 C3 C4 H7 117.655
C3 C4 H8 117.655 C4 C3 H5 117.655
C4 C3 H6 117.655 H5 C3 H6 114.302
H7 C4 H8 114.302
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.155      
2 O -0.173      
3 C -0.481      
4 C -0.481      
5 H 0.245      
6 H 0.245      
7 H 0.245      
8 H 0.245      


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 -3.232 3.232
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.330 0.000 0.000
y 0.000 -22.675 0.000
z 0.000 0.000 -29.084
Traceless
 xyz
x 4.550 0.000 0.000
y 0.000 2.532 0.000
z 0.000 0.000 -7.081
Polar
3z2-r2-14.163
x2-y21.345
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.505 0.000 0.000
y 0.000 4.806 0.000
z 0.000 0.000 5.760


<r2> (average value of r2) Å2
<r2> 69.398
(<r2>)1/2 8.331