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: MP2=FULL/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at MP2=FULL/CEP-121G
 hartrees
Energy at 0K-20.135361
Energy at 298.15K-20.141774
HF Energy-19.865600
Nuclear repulsion energy42.238561
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 MP2=FULL/CEP-121G
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' 3108 2930 0.00      
2 A1' 1525 1438 0.00      
3 A1' 1186 1118 0.00      
4 A1" 1196 1128 0.00      
5 A2' 1135 1070 0.00      
6 A2" 3222 3038 58.64      
7 A2" 862 813 0.22      
8 E' 3090 2913 28.91      
8 E' 3090 2913 28.91      
9 E' 1496 1410 0.93      
9 E' 1496 1410 0.93      
10 E' 1136 1071 15.84      
10 E' 1136 1071 15.84      
11 E' 853 804 26.94      
11 E' 853 804 26.94      
12 E" 3198 3014 0.00      
12 E" 3198 3014 0.00      
13 E" 1233 1163 0.00      
13 E" 1233 1163 0.00      
14 E" 781 736 0.00      
14 E" 781 736 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 17903.9 cm-1
Scaled (by 0.9427) Zero Point Vibrational Energy (zpe) 16878.0 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 MP2=FULL/CEP-121G
ABC
0.64173 0.64173 0.39865

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/CEP-121G

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.897 0.000
C2 0.777 -0.449 0.000
C3 -0.777 -0.449 0.000
H4 0.000 1.484 0.921
H5 1.285 -0.742 0.921
H6 -1.285 -0.742 0.921
H7 0.000 1.484 -0.921
H8 1.285 -0.742 -0.921
H9 -1.285 -0.742 -0.921

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9
C11.55401.55401.09152.27692.27691.09152.27692.2769
C21.55401.55402.27701.09152.27692.27701.09152.2769
C31.55401.55402.27702.27691.09152.27702.27691.0915
H41.09152.27702.27702.56962.56961.84133.16123.1612
H52.27691.09152.27692.56962.56963.16121.84133.1612
H62.27692.27691.09152.56962.56963.16123.16121.8413
H71.09152.27702.27701.84133.16123.16122.56962.5696
H82.27691.09152.27693.16121.84133.16122.56962.5696
H92.27692.27691.09153.16123.16121.84132.56962.5696

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 117.725
C1 C2 H8 117.725 C1 C3 C2 60.000
C1 C3 H6 117.725 C1 C3 H9 117.725
C2 C1 C3 60.000 C2 C1 H4 117.725
C2 C1 H7 117.725 C2 C3 H6 117.725
C2 C3 H9 117.725 C3 C1 H4 117.725
C3 C1 H7 117.725 C3 C2 H5 117.725
C3 C2 H8 117.725 H4 C1 H7 115.014
H5 C2 H8 115.014 H6 C3 H9 115.014
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability