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: HSEh1PBE/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 HSEh1PBE/6-31G**
 hartrees
Energy at 0K-117.764617
Energy at 298.15K 
HF Energy-117.764617
Nuclear repulsion energy75.887124
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 HSEh1PBE/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1' 3173 3028 0.00 245.21 0.04 0.07
2 A1' 1540 1469 0.00 5.08 0.74 0.85
3 A1' 1249 1192 0.00 28.90 0.09 0.17
4 A1" 1160 1107 0.00 0.00 0.75 0.86
5 A2' 1088 1038 0.00 0.00 0.75 0.86
6 A2" 3266 3117 28.91 0.00 0.75 0.86
7 A2" 863 824 0.78 0.00 0.75 0.86
8 E' 3165 3020 23.83 20.02 0.75 0.86
8 E' 3165 3020 23.83 20.02 0.75 0.86
9 E' 1481 1413 1.01 9.07 0.75 0.86
9 E' 1481 1413 1.01 9.07 0.75 0.86
10 E' 1069 1020 9.10 0.03 0.75 0.86
10 E' 1069 1020 9.10 0.03 0.75 0.86
11 E' 924 882 19.71 14.10 0.75 0.86
11 E' 924 882 19.71 14.10 0.75 0.86
12 E" 3247 3099 0.00 93.85 0.75 0.86
12 E" 3247 3099 0.00 93.85 0.75 0.86
13 E" 1219 1163 0.00 10.70 0.75 0.86
13 E" 1219 1163 0.00 10.70 0.75 0.86
14 E" 741 708 0.00 2.55 0.75 0.86
14 E" 741 708 0.00 2.55 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18015.1 cm-1
Scaled (by 0.9543) Zero Point Vibrational Energy (zpe) 17191.8 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 HSEh1PBE/6-31G**
ABC
0.67585 0.67585 0.42298

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G**

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.866 0.000
C2 0.750 -0.433 0.000
C3 -0.750 -0.433 0.000
H4 0.000 1.457 0.911
H5 1.262 -0.728 0.911
H6 -1.262 -0.728 0.911
H7 0.000 1.457 -0.911
H8 1.262 -0.728 -0.911
H9 -1.262 -0.728 -0.911

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9
C11.50051.50051.08552.22822.22821.08552.22822.2282
C21.50051.50052.22821.08552.22822.22821.08552.2282
C31.50051.50052.22822.22821.08552.22822.22821.0855
H41.08552.22822.22822.52342.52341.82153.11213.1121
H52.22821.08552.22822.52342.52343.11211.82153.1121
H62.22822.22821.08552.52342.52343.11213.11211.8215
H71.08552.22822.22821.82153.11213.11212.52342.5234
H82.22821.08552.22823.11211.82153.11212.52342.5234
H92.22822.22821.08553.11213.11211.82152.52342.5234

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 118.109
C1 C2 H8 118.109 C1 C3 C2 60.000
C1 C3 H6 118.109 C1 C3 H9 118.109
C2 C1 C3 60.000 C2 C1 H4 118.109
C2 C1 H7 118.109 C2 C3 H6 118.109
C2 C3 H9 118.109 C3 C1 H4 118.109
C3 C1 H7 118.109 C3 C2 H5 118.109
C3 C2 H8 118.109 H4 C1 H7 114.081
H5 C2 H8 114.081 H6 C3 H9 114.081
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.277      
2 C -0.277      
3 C -0.277      
4 H 0.138      
5 H 0.138      
6 H 0.138      
7 H 0.138      
8 H 0.138      
9 H 0.138      


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 -20.218 0.000 0.000
y 0.000 -20.218 0.000
z 0.000 0.000 -18.038
Traceless
 xyz
x -1.090 0.000 0.000
y 0.000 -1.090 0.000
z 0.000 0.000 2.180
Polar
3z2-r24.360
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 4.480 0.000 0.000
y 0.000 4.480 0.000
z 0.000 0.000 4.355


<r2> (average value of r2) Å2
<r2> 43.396
(<r2>)1/2 6.588