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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: QCISD(T)/daug-cc-pVDZ

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)/daug-cc-pVDZ
 hartrees
Energy at 0K-116.300406
Energy at 298.15K-116.303518
HF Energy-115.833803
Nuclear repulsion energy62.852100
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)/daug-cc-pVDZ
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 3291 3291        
2 A1 3054 3054        
3 A1 1657 1657        
4 A1 1500 1500        
5 A1 1142 1142        
6 A1 908 908        
7 A2 1001 1001        
8 A2 760 760        
9 B1 3131 3131        
10 B1 1078 1078        
11 B1 533 533        
12 B2 3247 3247        
13 B2 1050 1050        
14 B2 1011 1011        
15 B2 768 768        

Unscaled Zero Point Vibrational Energy (zpe) 12065.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12065.5 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)/daug-cc-pVDZ
ABC
0.97149 0.71180 0.44847

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.875
C2 0.000 0.660 -0.507
C3 0.000 -0.660 -0.507
H4 0.000 1.600 -1.056
H5 0.000 -1.600 -1.056
H6 0.925 0.000 1.472
H7 -0.925 0.000 1.472

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.53181.53182.50792.50791.10081.1008
C21.53181.32091.08832.32632.28242.2824
C31.53181.32092.32631.08832.28242.2824
H42.50791.08832.32633.20043.13183.1318
H52.50792.32631.08833.20043.13183.1318
H61.10082.28242.28243.13183.13181.8493
H71.10082.28242.28243.13183.13181.8493

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.460 C1 C2 H4 145.832
C1 C3 C2 64.460 C1 C3 H5 145.832
C2 C1 C3 51.081 C2 C1 H6 119.315
C2 C1 H7 119.315 C2 C3 H5 149.708
C3 C1 H6 119.315 C3 C1 H7 119.315
C3 C2 H4 149.708 H6 C1 H7 114.273
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability