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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: MP2=FULL/6-311G*

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=FULL/6-311G*
 hartrees
Energy at 0K-116.300850
Energy at 298.15K-116.304041
HF Energy-115.842193
Nuclear repulsion energy63.628412
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=FULL/6-311G*
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 3340 3164 0.04 146.74 0.15 0.26
2 A1 3111 2946 55.27 128.88 0.16 0.27
3 A1 1695 1605 13.68 21.66 0.18 0.31
4 A1 1551 1469 1.01 14.48 0.23 0.37
5 A1 1183 1120 0.38 10.37 0.17 0.29
6 A1 940 890 6.53 5.76 0.54 0.70
7 A2 1033 978 0.00 9.45 0.75 0.86
8 A2 823 780 0.00 0.01 0.75 0.86
9 B1 3192 3023 43.06 88.59 0.75 0.86
10 B1 1129 1069 0.92 2.42 0.75 0.86
11 B1 571 541 88.43 0.86 0.75 0.86
12 B2 3295 3120 0.10 75.59 0.75 0.86
13 B2 1081 1024 30.91 0.38 0.75 0.86
14 B2 1038 983 34.96 0.01 0.75 0.86
15 B2 804 762 14.56 14.95 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12392.0 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 11736.4 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=FULL/6-311G*
ABC
0.99513 0.73002 0.45986

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.864
C2 0.000 0.652 -0.501
C3 0.000 -0.652 -0.501
H4 0.000 1.584 -1.041
H5 0.000 -1.584 -1.041
H6 0.915 0.000 1.455
H7 -0.915 0.000 1.455

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.51211.51212.47762.47761.08931.0893
C21.51211.30351.07782.30032.25542.2554
C31.51211.30352.30031.07782.25542.2554
H42.47761.07782.30033.16833.09483.0948
H52.47762.30031.07783.16833.09483.0948
H61.08932.25542.25543.09483.09481.8297
H71.08932.25542.25543.09483.09481.8297

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.467 C1 C2 H4 145.637
C1 C3 C2 64.467 C1 C3 H5 145.637
C2 C1 C3 51.066 C2 C1 H6 119.328
C2 C1 H7 119.328 C2 C3 H5 149.896
C3 C1 H6 119.328 C3 C1 H7 119.328
C3 C2 H4 149.896 H6 C1 H7 114.248
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability