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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: MP2=FULL/STO-3G

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/STO-3G
 hartrees
Energy at 0K-114.584056
Energy at 298.15K-114.587285
HF Energy-114.395536
Nuclear repulsion energy62.915107
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/STO-3G
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 3618 3216 6.54 62.38 0.15 0.26
2 A1 3399 3022 3.31 36.59 0.14 0.25
3 A1 1809 1608 7.79 6.89 0.35 0.52
4 A1 1677 1491 2.39 13.18 0.49 0.66
5 A1 1358 1207 0.17 5.50 0.17 0.29
6 A1 1031 916 0.88 13.65 0.67 0.80
7 A2 1141 1014 0.00 11.61 0.75 0.86
8 A2 915 814 0.00 0.21 0.75 0.86
9 B1 3539 3146 10.86 31.72 0.75 0.86
10 B1 1202 1069 8.00 1.71 0.75 0.86
11 B1 670 595 28.85 1.22 0.75 0.86
12 B2 3559 3164 26.62 34.80 0.75 0.86
13 B2 1244 1106 28.27 0.01 0.75 0.86
14 B2 1197 1064 0.69 0.00 0.75 0.86
15 B2 931 827 0.89 14.17 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13644.9 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 12129.0 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/STO-3G
ABC
0.96787 0.71819 0.44997

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.868
C2 0.000 0.662 -0.504
C3 0.000 -0.662 -0.504
H4 0.000 1.606 -1.054
H5 0.000 -1.606 -1.054
H6 0.922 0.000 1.476
H7 -0.922 0.000 1.476

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.52361.52362.50492.50491.10421.1042
C21.52361.32311.09292.33342.28232.2823
C31.52361.32312.33341.09292.28232.2823
H42.50491.09292.33343.21243.13533.1353
H52.50492.33341.09293.21243.13533.1353
H61.10422.28232.28233.13533.13531.8437
H71.10422.28232.28233.13533.13531.8437

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.264 C1 C2 H4 145.931
C1 C3 C2 64.264 C1 C3 H5 145.931
C2 C1 C3 51.472 C2 C1 H6 119.725
C2 C1 H7 119.725 C2 C3 H5 149.805
C3 C1 H6 119.725 C3 C1 H7 119.725
C3 C2 H4 149.805 H6 C1 H7 113.205
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability