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: mPW1PW91/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at mPW1PW91/aug-cc-pVTZ
 hartrees
Energy at 0K-117.912378
Energy at 298.15K 
HF Energy-117.912378
Nuclear repulsion energy76.109259
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 mPW1PW91/aug-cc-pVTZ
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' 3160 3028 0.00 327.02 0.02 0.04
2 A1' 1523 1460 0.00 2.07 0.17 0.29
3 A1' 1234 1183 0.00 42.18 0.06 0.11
4 A1" 1157 1109 0.00 0.00 0.75 0.86
5 A2' 1093 1047 0.00 0.00 0.75 0.86
6 A2" 3251 3114 25.48 0.00 0.75 0.86
7 A2" 858 822 0.77 0.00 0.75 0.86
8 E' 3152 3020 21.95 23.73 0.75 0.86
8 E' 3152 3020 21.95 23.60 0.75 0.86
9 E' 1472 1410 1.47 4.57 0.75 0.86
9 E' 1472 1410 1.47 4.57 0.75 0.86
10 E' 1056 1011 8.38 1.04 0.75 0.86
10 E' 1056 1011 8.38 1.07 0.75 0.86
11 E' 909 871 20.79 6.69 0.75 0.86
11 E' 909 871 20.79 6.77 0.75 0.86
12 E" 3229 3094 0.00 94.73 0.75 0.86
12 E" 3229 3094 0.00 94.95 0.75 0.86
13 E" 1214 1163 0.00 1.04 0.75 0.86
13 E" 1214 1163 0.00 1.07 0.75 0.86
14 E" 742 711 0.00 0.49 0.75 0.86
14 E" 742 711 0.00 0.47 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 17911.7 cm-1
Scaled (by 0.9581) Zero Point Vibrational Energy (zpe) 17161.2 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 mPW1PW91/aug-cc-pVTZ
ABC
0.67958 0.67958 0.42524

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVTZ

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.865 0.000
C2 0.749 -0.432 0.000
C3 -0.749 -0.432 0.000
H4 0.000 1.451 0.908
H5 1.256 -0.725 0.908
H6 -1.256 -0.725 0.908
H7 0.000 1.451 -0.908
H8 1.256 -0.725 -0.908
H9 -1.256 -0.725 -0.908

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9
C11.49771.49771.08062.22052.22051.08062.22052.2205
C21.49771.49772.22051.08062.22052.22051.08062.2205
C31.49771.49772.22052.22051.08062.22052.22051.0806
H41.08062.22052.22052.51262.51261.81593.10013.1001
H52.22051.08062.22052.51262.51263.10011.81593.1001
H62.22052.22051.08062.51262.51263.10013.10011.8159
H71.08062.22052.22051.81593.10013.10012.51262.5126
H82.22051.08062.22053.10011.81593.10012.51262.5126
H92.22052.22051.08063.10013.10011.81592.51262.5126

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 118.008
C1 C2 H8 118.008 C1 C3 C2 60.000
C1 C3 H6 118.008 C1 C3 H9 118.008
C2 C1 C3 60.000 C2 C1 H4 118.008
C2 C1 H7 118.008 C2 C3 H6 118.008
C2 C3 H9 118.008 C3 C1 H4 118.008
C3 C1 H7 118.008 C3 C2 H5 118.008
C3 C2 H8 118.008 H4 C1 H7 114.328
H5 C2 H8 114.328 H6 C3 H9 114.328
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.470      
2 C -0.470      
3 C -0.470      
4 H 0.235      
5 H 0.235      
6 H 0.235      
7 H 0.235      
8 H 0.235      
9 H 0.235      


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 -20.665 0.000 0.000
y 0.000 -20.665 0.000
z 0.000 0.000 -18.329
Traceless
 xyz
x -1.168 0.000 0.000
y 0.000 -1.168 0.000
z 0.000 0.000 2.336
Polar
3z2-r24.672
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 5.579 0.000 0.000
y 0.000 5.579 0.000
z 0.000 0.000 4.892


<r2> (average value of r2) Å2
<r2> 43.451
(<r2>)1/2 6.592