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: B2PLYP=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at B2PLYP=FULL/3-21G
 hartrees
Energy at 0K-117.046712
Energy at 298.15K 
HF Energy-116.954895
Nuclear repulsion energy75.209435
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 B2PLYP=FULL/3-21G
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' 3201 3047 0.00 195.42 0.05 0.09
2 A1' 1565 1490 0.00 8.71 0.71 0.83
3 A1' 1161 1105 0.00 24.66 0.07 0.13
4 A1" 1191 1134 0.00 0.00 0.73 0.85
5 A2' 1154 1099 0.00 0.00 0.75 0.86
6 A2" 3295 3137 22.76 0.00 0.75 0.86
7 A2" 877 835 0.83 0.00 0.75 0.86
8 E' 3192 3038 16.71 15.06 0.75 0.86
8 E' 3192 3038 16.71 15.06 0.75 0.86
9 E' 1543 1468 2.76 8.98 0.75 0.86
9 E' 1543 1468 2.76 8.98 0.75 0.86
10 E' 1113 1060 21.01 0.13 0.75 0.86
10 E' 1113 1060 21.01 0.13 0.75 0.86
11 E' 855 814 15.54 16.72 0.75 0.86
11 E' 855 814 15.54 16.72 0.75 0.86
12 E" 3272 3115 0.00 79.52 0.75 0.86
12 E" 3272 3115 0.00 79.52 0.75 0.86
13 E" 1247 1187 0.00 13.18 0.75 0.86
13 E" 1247 1187 0.00 13.18 0.75 0.86
14 E" 780 742 0.00 3.58 0.75 0.86
14 E" 780 742 0.00 3.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 18222.9 cm-1
Scaled (by 0.952) Zero Point Vibrational Energy (zpe) 17348.2 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 B2PLYP=FULL/3-21G
ABC
0.66233 0.66233 0.41271

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/3-21G

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.881 0.000
C2 0.763 -0.440 0.000
C3 -0.763 -0.440 0.000
H4 0.000 1.462 0.912
H5 1.266 -0.731 0.912
H6 -1.266 -0.731 0.912
H7 0.000 1.462 -0.912
H8 1.266 -0.731 -0.912
H9 -1.266 -0.731 -0.912

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9
C11.52551.52551.08132.24312.24311.08132.24312.2431
C21.52551.52552.24311.08132.24312.24311.08132.2431
C31.52551.52552.24312.24311.08132.24312.24311.0813
H41.08132.24312.24312.53192.53191.82393.12043.1204
H52.24311.08132.24312.53192.53193.12041.82393.1204
H62.24312.24311.08132.53192.53193.12043.12041.8239
H71.08132.24312.24311.82393.12043.12042.53192.5319
H82.24311.08132.24313.12041.82393.12042.53192.5319
H92.24312.24311.08133.12043.12041.82392.53192.5319

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 117.732
C1 C2 H8 117.732 C1 C3 C2 60.000
C1 C3 H6 117.732 C1 C3 H9 117.732
C2 C1 C3 60.000 C2 C1 H4 117.732
C2 C1 H7 117.732 C2 C3 H6 117.732
C2 C3 H9 117.732 C3 C1 H4 117.732
C3 C1 H7 117.732 C3 C2 H5 117.732
C3 C2 H8 117.732 H4 C1 H7 114.996
H5 C2 H8 114.996 H6 C3 H9 114.996
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability