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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: QCISD(T)=FULL/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at QCISD(T)=FULL/cc-pVQZ
 hartrees
Energy at 0K-116.519975
Energy at 298.15K-116.523175
HF Energy-115.872754
Nuclear repulsion energy63.965599
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 QCISD(T)=FULL/cc-pVQZ
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 3323 3323        
2 A1 3082 3082        
3 A1 1698 1698        
4 A1 1530 1530        
5 A1 1162 1162        
6 A1 928 928        
7 A2 1026 1026        
8 A2 838 838        
9 B1 3153 3153        
10 B1 1114 1114        
11 B1 583 583        
12 B2 3279 3279        
13 B2 1078 1078        
14 B2 1043 1043        
15 B2 798 798        

Unscaled Zero Point Vibrational Energy (zpe) 12317.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12317.0 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 QCISD(T)=FULL/cc-pVQZ
ABC
1.00844 0.73577 0.46459

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/cc-pVQZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.860
C2 0.000 0.647 -0.499
C3 0.000 -0.647 -0.499
H4 0.000 1.575 -1.036
H5 0.000 -1.575 -1.036
H6 0.911 0.000 1.449
H7 -0.911 0.000 1.449

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.50561.50562.46472.46471.08441.0844
C21.50561.29401.07172.28562.24582.2458
C31.50561.29402.28561.07172.24582.2458
H42.46471.07172.28563.14943.07953.0795
H52.46472.28561.07173.14943.07953.0795
H61.08442.24582.24583.07953.07951.8213
H71.08442.24582.24583.07953.07951.8213

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.549 C1 C2 H4 145.497
C1 C3 C2 64.549 C1 C3 H5 145.497
C2 C1 C3 50.902 C2 C1 H6 119.358
C2 C1 H7 119.358 C2 C3 H5 149.953
C3 C1 H6 119.358 C3 C1 H7 119.358
C3 C2 H4 149.953 H6 C1 H7 114.230
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability