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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: CISD/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at CISD/Def2TZVPP
 hartrees
Energy at 0K-116.319094
Energy at 298.15K-116.322402
HF Energy-115.869493
Nuclear repulsion energy64.290375
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 CISD/Def2TZVPP
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 3412 3412 0.73      
2 A1 3156 3156 60.97      
3 A1 1787 1787 18.76      
4 A1 1584 1584 1.43      
5 A1 1208 1208 0.00      
6 A1 968 968 3.90      
7 A2 1061 1061 0.00      
8 A2 920 920 0.00      
9 B1 3225 3225 38.12      
10 B1 1156 1156 2.45      
11 B1 646 646 89.04      
12 B2 3364 3364 1.51      
13 B2 1132 1132 25.93      
14 B2 1093 1093 30.02      
15 B2 841 841 18.52      

Unscaled Zero Point Vibrational Energy (zpe) 12776.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12776.6 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 CISD/Def2TZVPP
ABC
1.02302 0.74056 0.46914

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.857
C2 0.000 0.642 -0.498
C3 0.000 -0.642 -0.498
H4 0.000 1.566 -1.032
H5 0.000 -1.566 -1.032
H6 0.906 0.000 1.447
H7 -0.906 0.000 1.447

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.49911.49912.45402.45401.08081.0808
C21.49911.28341.06772.27132.23882.2388
C31.49911.28342.27131.06772.23882.2388
H42.45401.06772.27133.13163.06883.0688
H52.45402.27131.06773.13163.06883.0688
H61.08082.23882.23883.06883.06881.8118
H71.08082.23882.23883.06883.06881.8118

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.656 C1 C2 H4 145.403
C1 C3 C2 64.656 C1 C3 H5 145.403
C2 C1 C3 50.689 C2 C1 H6 119.528
C2 C1 H7 119.528 C2 C3 H5 149.941
C3 C1 H6 119.528 C3 C1 H7 119.528
C3 C2 H4 149.941 H6 C1 H7 113.904
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability