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/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 CCD/6-31+G**
 hartrees
Energy at 0K-117.536181
Energy at 298.15K-117.542618
HF Energy-117.070953
Nuclear repulsion energy75.802824
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/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' 3226 3040 0.00      
2 A1' 1587 1495 0.00      
3 A1' 1252 1180 0.00      
4 A1" 1198 1129 0.00      
5 A2' 1133 1068 0.00      
6 A2" 3319 3127 33.79      
7 A2" 882 831 0.11      
8 E' 3215 3029 22.29      
8 E' 3215 3029 22.29      
9 E' 1527 1439 0.20      
9 E' 1527 1439 0.20      
10 E' 1124 1059 8.65      
10 E' 1124 1059 8.65      
11 E' 921 868 24.47      
11 E' 921 868 24.47      
12 E" 3300 3110 0.00      
12 E" 3300 3110 0.00      
13 E" 1253 1181 0.00      
13 E" 1253 1181 0.00      
14 E" 773 729 0.00      
14 E" 773 729 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 18410.6 cm-1
Scaled (by 0.9423) Zero Point Vibrational Energy (zpe) 17348.3 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/6-31+G**
ABC
0.67380 0.67380 0.42093

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

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.870 0.000
C2 0.753 -0.435 0.000
C3 -0.753 -0.435 0.000
H4 0.000 1.456 0.909
H5 1.261 -0.728 0.909
H6 -1.261 -0.728 0.909
H7 0.000 1.456 -0.909
H8 1.261 -0.728 -0.909
H9 -1.261 -0.728 -0.909

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9
C11.50651.50651.08132.22882.22881.08132.22882.2288
C21.50651.50652.22881.08132.22882.22881.08132.2288
C31.50651.50652.22882.22881.08132.22882.22881.0813
H41.08132.22882.22882.52132.52131.81763.10823.1082
H52.22881.08132.22882.52132.52133.10821.81763.1082
H62.22882.22881.08132.52132.52133.10823.10821.8176
H71.08132.22882.22881.81763.10823.10822.52132.5213
H82.22881.08132.22883.10821.81763.10822.52132.5213
H92.22882.22881.08133.10823.10821.81762.52132.5213

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 117.984
C1 C2 H8 117.984 C1 C3 C2 60.000
C1 C3 H6 117.984 C1 C3 H9 117.984
C2 C1 C3 60.000 C2 C1 H4 117.984
C2 C1 H7 117.984 C2 C3 H6 117.984
C2 C3 H9 117.984 C3 C1 H4 117.984
C3 C1 H7 117.984 C3 C2 H5 117.984
C3 C2 H8 117.984 H4 C1 H7 114.385
H5 C2 H8 114.385 H6 C3 H9 114.385
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability