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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: MP4/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at MP4/daug-cc-pVTZ
 hartrees
Energy at 0K-116.407356
Energy at 298.15K 
HF Energy-115.865176
Nuclear repulsion energy63.583716
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 MP4/daug-cc-pVTZ
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 3047 3047        
2 A1 2802 2802        
3 A1 1588 1588        
4 A1 1022 1022        
5 A1 777 777        
6 A1 1685i 1685i        
7 A2 1016 1016        
8 A2 825 825        
9 B1 3248 3248        
10 B1 615 615        
11 B1 1169i 1169i        
12 B2 2890 2890        
13 B2 1069 1069        
14 B2 1036 1036        
15 B2 551i 551i        

Unscaled Zero Point Vibrational Energy (zpe) 8264.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8264.9 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 MP4/daug-cc-pVTZ
ABC
0.99575 0.72715 0.45889

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/daug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.866
C2 0.000 0.652 -0.502
C3 0.000 -0.652 -0.502
H4 0.000 1.583 -1.041
H5 0.000 -1.583 -1.041
H6 0.915 0.000 1.455
H7 -0.915 0.000 1.455

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.51571.51572.47902.47901.08831.0883
C21.51571.30311.07642.29892.25682.2568
C31.51571.30312.29891.07642.25682.2568
H42.47901.07642.29893.16663.09453.0945
H52.47902.29891.07643.16663.09453.0945
H61.08832.25682.25683.09453.09451.8306
H71.08832.25682.25683.09453.09451.8306

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.541 C1 C2 H4 145.507
C1 C3 C2 64.541 C1 C3 H5 145.507
C2 C1 C3 50.917 C2 C1 H6 119.238
C2 C1 H7 119.238 C2 C3 H5 149.952
C3 C1 H6 119.238 C3 C1 H7 119.238
C3 C2 H4 149.952 H6 C1 H7 114.501
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability