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: CCD/CEP-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 CCD/CEP-31G
 hartrees
Energy at 0K-20.139777
Energy at 298.15K-20.146126
HF Energy-19.855179
Nuclear repulsion energy41.781550
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 CCD/CEP-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' 3112 2935 0.00      
2 A1' 1525 1439 0.00      
3 A1' 1183 1116 0.00      
4 A1" 1158 1092 0.00      
5 A2' 1118 1055 0.00      
6 A2" 3215 3032 105.01      
7 A2" 854 806 2.24      
8 E' 3095 2919 40.99      
8 E' 3095 2919 40.99      
9 E' 1474 1390 1.92      
9 E' 1474 1390 1.92      
10 E' 1109 1046 13.87      
10 E' 1109 1046 13.87      
11 E' 849 801 25.54      
11 E' 849 801 25.54      
12 E" 3192 3011 0.00      
12 E" 3192 3011 0.00      
13 E" 1208 1139 0.00      
13 E" 1208 1139 0.00      
14 E" 764 720 0.00      
14 E" 764 720 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 17773.1 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 16761.8 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 CCD/CEP-31G
ABC
0.62853 0.62853 0.39044

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

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.906 0.000
C2 0.784 -0.453 0.000
C3 -0.784 -0.453 0.000
H4 0.000 1.502 0.930
H5 1.301 -0.751 0.930
H6 -1.301 -0.751 0.930
H7 0.000 1.502 -0.930
H8 1.301 -0.751 -0.930
H9 -1.301 -0.751 -0.930

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9
C11.56871.56871.10502.30272.30271.10502.30272.3027
C21.56871.56872.30271.10502.30272.30271.10502.3027
C31.56871.56872.30272.30271.10502.30272.30271.1050
H41.10502.30272.30272.60172.60171.86053.19853.1985
H52.30271.10502.30272.60172.60173.19851.86053.1985
H62.30272.30271.10502.60172.60173.19853.19851.8605
H71.10502.30272.30271.86053.19853.19852.60172.6017
H82.30271.10502.30273.19851.86053.19852.60172.6017
H92.30272.30271.10503.19853.19851.86052.60172.6017

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 117.866
C1 C2 H8 117.866 C1 C3 C2 60.000
C1 C3 H6 117.866 C1 C3 H9 117.866
C2 C1 C3 60.000 C2 C1 H4 117.866
C2 C1 H7 117.866 C2 C3 H6 117.866
C2 C3 H9 117.866 C3 C1 H4 117.866
C3 C1 H7 117.866 C3 C2 H5 117.866
C3 C2 H8 117.866 H4 C1 H7 114.672
H5 C2 H8 114.672 H6 C3 H9 114.672
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability