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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-116.245121
Energy at 298.15K-116.248306
HF Energy-115.842038
Nuclear repulsion energy63.570444
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 MP2/6-311G*
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 3337 3171 0.02 147.57 0.15 0.26
2 A1 3107 2953 55.44 129.16 0.16 0.27
3 A1 1691 1607 13.93 21.48 0.18 0.31
4 A1 1549 1472 1.04 14.60 0.22 0.37
5 A1 1180 1121 0.38 10.38 0.17 0.29
6 A1 939 892 6.35 5.87 0.53 0.70
7 A2 1031 980 0.00 9.47 0.75 0.86
8 A2 820 779 0.00 0.01 0.75 0.86
9 B1 3189 3030 43.43 88.81 0.75 0.86
10 B1 1127 1071 0.91 2.44 0.75 0.86
11 B1 569 541 88.49 0.86 0.75 0.86
12 B2 3291 3127 0.07 76.24 0.75 0.86
13 B2 1079 1025 30.96 0.39 0.75 0.86
14 B2 1037 985 34.94 0.01 0.75 0.86
15 B2 801 762 14.20 14.97 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12372.7 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 11757.7 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 MP2/6-311G*
ABC
0.99374 0.72833 0.45893

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.865
C2 0.000 0.652 -0.501
C3 0.000 -0.652 -0.501
H4 0.000 1.585 -1.042
H5 0.000 -1.585 -1.042
H6 0.915 0.000 1.456
H7 -0.915 0.000 1.456

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.51401.51402.47982.47981.08981.0898
C21.51401.30461.07822.30172.25742.2574
C31.51401.30462.30171.07822.25742.2574
H42.47981.07822.30173.16983.09733.0973
H52.47982.30171.07823.16983.09733.0973
H61.08982.25742.25743.09733.09731.8305
H71.08982.25742.25743.09733.09731.8305

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.478 C1 C2 H4 145.641
C1 C3 C2 64.478 C1 C3 H5 145.641
C2 C1 C3 51.045 C2 C1 H6 119.328
C2 C1 H7 119.328 C2 C3 H5 149.881
C3 C1 H6 119.328 C3 C1 H7 119.328
C3 C2 H4 149.881 H6 C1 H7 114.254
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability