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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: CCSD/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 CCSD/daug-cc-pVDZ
 hartrees
Energy at 0K-116.281238
Energy at 298.15K-116.284405
HF Energy-115.834879
Nuclear repulsion energy63.086303
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 CCSD/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 3319 3319 0.09      
2 A1 3075 3075 60.99      
3 A1 1699 1699 19.42      
4 A1 1519 1519 1.60      
5 A1 1164 1164 0.00      
6 A1 922 922 3.17      
7 A2 1013 1013 0.00      
8 A2 794 794 0.00      
9 B1 3149 3149 39.00      
10 B1 1094 1094 1.69      
11 B1 559 559 81.91      
12 B2 3274 3274 0.18      
13 B2 1070 1070 27.23      
14 B2 1032 1032 22.59      
15 B2 790 790 15.56      

Unscaled Zero Point Vibrational Energy (zpe) 12235.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12235.7 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 CCSD/daug-cc-pVDZ
ABC
0.97994 0.71649 0.45192

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.872
C2 0.000 0.657 -0.505
C3 0.000 -0.657 -0.505
H4 0.000 1.596 -1.052
H5 0.000 -1.596 -1.052
H6 0.922 0.000 1.470
H7 -0.922 0.000 1.470

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.52571.52572.49912.49911.09911.0991
C21.52571.31381.08612.31782.27652.2765
C31.52571.31382.31781.08612.27652.2765
H42.49911.08612.31783.19133.12313.1231
H52.49912.31781.08613.19133.12313.1231
H61.09912.27652.27653.12313.12311.8444
H71.09912.27652.27653.12313.12311.8444

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.498 C1 C2 H4 145.700
C1 C3 C2 64.498 C1 C3 H5 145.700
C2 C1 C3 51.005 C2 C1 H6 119.409
C2 C1 H7 119.409 C2 C3 H5 149.802
C3 C1 H6 119.409 C3 C1 H7 119.409
C3 C2 H4 149.802 H6 C1 H7 114.082
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability