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 C3H6 (Cyclopropane)

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at PBEPBEultrafine/6-31+G**
 hartrees
Energy at 0K-117.736085
Energy at 298.15K 
HF Energy-117.736085
Nuclear repulsion energy75.225919
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 PBEPBEultrafine/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' 3083 3048 0.00 294.09 0.03 0.06
2 A1' 1476 1459 0.00 1.13 0.38 0.55
3 A1' 1199 1186 0.00 41.69 0.08 0.14
4 A1" 1110 1097 0.00 0.00 0.75 0.86
5 A2' 1034 1023 0.00 0.00 0.75 0.86
6 A2" 3175 3139 28.75 0.00 0.75 0.86
7 A2" 839 829 1.44 0.00 0.75 0.86
8 E' 3076 3041 25.70 28.70 0.75 0.86
8 E' 3076 3041 25.70 28.70 0.75 0.86
9 E' 1426 1410 0.97 7.91 0.75 0.86
9 E' 1426 1410 0.97 7.91 0.75 0.86
10 E' 1012 1000 15.97 0.65 0.75 0.86
10 E' 1012 1000 15.97 0.65 0.75 0.86
11 E' 877 867 22.37 10.42 0.75 0.86
11 E' 877 867 22.37 10.41 0.75 0.86
12 E" 3155 3119 0.00 101.03 0.75 0.86
12 E" 3155 3119 0.00 101.03 0.75 0.86
13 E" 1171 1158 0.00 2.94 0.75 0.86
13 E" 1171 1158 0.00 2.94 0.75 0.86
14 E" 718 710 0.00 0.47 0.75 0.86
14 E" 718 710 0.00 0.47 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17391.8 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 17193.5 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 PBEPBEultrafine/6-31+G**
ABC
0.66402 0.66402 0.41541

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

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.874 0.000
C2 0.757 -0.437 0.000
C3 -0.757 -0.437 0.000
H4 0.000 1.469 0.918
H5 1.272 -0.735 0.918
H6 -1.272 -0.735 0.918
H7 0.000 1.469 -0.918
H8 1.272 -0.735 -0.918
H9 -1.272 -0.735 -0.918

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9
C11.51461.51461.09392.24742.24741.09392.24742.2474
C21.51461.51462.24741.09392.24742.24741.09392.2474
C31.51461.51462.24742.24741.09392.24742.24741.0939
H41.09392.24742.24742.54472.54471.83623.13803.1380
H52.24741.09392.24742.54472.54473.13801.83623.1380
H62.24742.24741.09392.54472.54473.13803.13801.8362
H71.09392.24742.24741.83623.13803.13802.54472.5447
H82.24741.09392.24743.13801.83623.13802.54472.5447
H92.24742.24741.09393.13803.13801.83622.54472.5447

picture of Cyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 60.000 C1 C2 H5 118.088
C1 C2 H8 118.088 C1 C3 C2 60.000
C1 C3 H6 118.088 C1 C3 H9 118.088
C2 C1 C3 60.000 C2 C1 H4 118.088
C2 C1 H7 118.088 C2 C3 H6 118.088
C2 C3 H9 118.088 C3 C1 H4 118.088
C3 C1 H7 118.088 C3 C2 H5 118.088
C3 C2 H8 118.088 H4 C1 H7 114.133
H5 C2 H8 114.133 H6 C3 H9 114.133
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.337      
2 C -0.337      
3 C -0.337      
4 H 0.169      
5 H 0.169      
6 H 0.169      
7 H 0.169      
8 H 0.169      
9 H 0.169      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.049 0.000 0.000
y 0.000 -21.049 0.000
z 0.000 0.000 -18.556
Traceless
 xyz
x -1.247 0.000 0.000
y 0.000 -1.247 0.000
z 0.000 0.000 2.493
Polar
3z2-r24.986
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.418 0.000 0.000
y 0.000 5.418 0.000
z 0.000 0.000 4.737


<r2> (average value of r2) Å2
<r2> 44.400
(<r2>)1/2 6.663