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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: MP2/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 MP2/cc-pVQZ
 hartrees
Energy at 0K-116.389470
Energy at 298.15K-116.392680
HF Energy-115.872656
Nuclear repulsion energy63.964827
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 MP2/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 3344 3171 0.31 153.38 0.12 0.22
2 A1 3112 2951 50.90 139.70 0.12 0.21
3 A1 1692 1605 16.11 34.58 0.10 0.18
4 A1 1532 1453 0.95 12.50 0.19 0.32
5 A1 1168 1108 0.03 16.26 0.11 0.19
6 A1 933 885 4.97 4.40 0.56 0.72
7 A2 1028 975 0.00 3.79 0.75 0.86
8 A2 847 804 0.00 0.11 0.75 0.86
9 B1 3194 3029 28.37 87.35 0.75 0.86
10 B1 1120 1062 1.36 0.57 0.75 0.86
11 B1 588 558 78.02 0.42 0.75 0.86
12 B2 3300 3130 1.46 72.94 0.75 0.86
13 B2 1072 1017 14.79 0.01 0.75 0.86
14 B2 1037 984 39.93 0.01 0.75 0.86
15 B2 805 763 14.38 13.37 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12386.3 cm-1
Scaled (by 0.9484) Zero Point Vibrational Energy (zpe) 11747.1 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 MP2/cc-pVQZ
ABC
1.00627 0.73718 0.46479

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/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 0.648 -0.499
C3 0.000 -0.648 -0.499
H4 0.000 1.576 -1.035
H5 0.000 -1.576 -1.035
H6 0.912 0.000 1.446
H7 -0.912 0.000 1.446

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.50491.50492.46462.46461.08381.0838
C21.50491.29541.07242.28792.24312.2431
C31.50491.29542.28791.07242.24312.2431
H42.46461.07242.28793.15303.07723.0772
H52.46462.28791.07243.15303.07723.0772
H61.08382.24312.24313.07723.07721.8234
H71.08382.24312.24313.07723.07721.8234

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.509 C1 C2 H4 145.480
C1 C3 C2 64.509 C1 C3 H5 145.480
C2 C1 C3 50.983 C2 C1 H6 119.215
C2 C1 H7 119.215 C2 C3 H5 150.011
C3 C1 H6 119.215 C3 C1 H7 119.215
C3 C2 H4 150.011 H6 C1 H7 114.534
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability