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: HF/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at HF/6-31G
 hartrees
Energy at 0K-117.008042
Energy at 298.15K 
HF Energy-117.008042
Nuclear repulsion energy76.017484
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 HF/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' 3327 3004 0.00 248.14 0.05 0.09
2 A1' 1673 1510 0.00 4.93 0.71 0.83
3 A1' 1296 1170 0.00 39.16 0.08 0.15
4 A1" 1272 1149 0.00 0.00 0.00 0.00
5 A2' 1286 1162 0.00 0.00 0.00 0.00
6 A2" 3413 3082 50.33 0.00 0.00 0.00
7 A2" 939 848 0.18 0.00 0.00 0.00
8 E' 3310 2989 28.30 19.18 0.75 0.86
8 E' 3310 2989 28.30 19.18 0.75 0.86
9 E' 1633 1475 2.20 8.49 0.75 0.86
9 E' 1633 1475 2.20 8.49 0.75 0.86
10 E' 1223 1104 10.41 0.34 0.75 0.86
10 E' 1223 1104 10.41 0.34 0.75 0.86
11 E' 950 857 32.29 23.36 0.75 0.86
11 E' 950 857 32.29 23.36 0.75 0.86
12 E" 3390 3060 0.00 99.77 0.75 0.86
12 E" 3390 3060 0.00 99.77 0.75 0.86
13 E" 1344 1213 0.00 11.55 0.75 0.86
13 E" 1344 1213 0.00 11.55 0.75 0.86
14 E" 845 763 0.00 3.70 0.75 0.86
14 E" 845 763 0.00 3.70 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 19296.3 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 17422.6 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 HF/6-31G
ABC
0.67743 0.67743 0.42127

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

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.869 0.000
C2 0.753 -0.435 0.000
C3 -0.753 -0.435 0.000
H4 0.000 1.456 0.898
H5 1.261 -0.728 0.898
H6 -1.261 -0.728 0.898
H7 0.000 1.456 -0.898
H8 1.261 -0.728 -0.898
H9 -1.261 -0.728 -0.898

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9
C11.50541.50541.07292.22442.22441.07292.22442.2244
C21.50541.50542.22441.07292.22442.22441.07292.2244
C31.50541.50542.22442.22441.07292.22442.22441.0729
H41.07292.22442.22442.52232.52231.79603.09643.0964
H52.22441.07292.22442.52232.52233.09641.79603.0964
H62.22442.22441.07292.52232.52233.09643.09641.7960
H71.07292.22442.22441.79603.09643.09642.52232.5223
H82.22441.07292.22443.09641.79603.09642.52232.5223
H92.22442.22441.07293.09643.09641.79602.52232.5223

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 118.289
C1 C2 H8 118.289 C1 C3 C2 60.000
C1 C3 H6 118.289 C1 C3 H9 118.289
C2 C1 C3 60.000 C2 C1 H4 118.289
C2 C1 H7 118.289 C2 C3 H6 118.289
C2 C3 H9 118.289 C3 C1 H4 118.289
C3 C1 H7 118.289 C3 C2 H5 118.289
C3 C2 H8 118.289 H4 C1 H7 113.645
H5 C2 H8 113.645 H6 C3 H9 113.645
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.347      
2 C -0.347      
3 C -0.347      
4 H 0.173      
5 H 0.173      
6 H 0.173      
7 H 0.173      
8 H 0.173      
9 H 0.173      


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 0.000 -0.003 0.000 0.003
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.727 0.000 0.000
y 0.000 -20.727 0.000
z 0.000 0.000 -18.621
Traceless
 xyz
x -1.053 0.000 0.000
y 0.000 -1.053 0.000
z 0.000 0.000 2.107
Polar
3z2-r24.213
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 4.314 0.000 0.000
y 0.000 4.314 0.000
z 0.000 0.000 4.137


<r2> (average value of r2) Å2
<r2> 43.666
(<r2>)1/2 6.608