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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: MP2/cc-pVTZ

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-pVTZ
 hartrees
Energy at 0K-116.352014
Energy at 298.15K-116.355228
HF Energy-115.864869
Nuclear repulsion energy63.843037
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-pVTZ
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 3345 3176 0.29 150.13 0.15 0.26
2 A1 3112 2954 51.96 137.34 0.13 0.23
3 A1 1688 1603 15.69 28.57 0.14 0.25
4 A1 1534 1457 1.22 13.52 0.21 0.34
5 A1 1170 1111 0.07 13.98 0.13 0.22
6 A1 935 888 4.86 4.95 0.57 0.73
7 A2 1029 977 0.00 5.79 0.75 0.86
8 A2 844 802 0.00 0.05 0.75 0.86
9 B1 3192 3031 31.56 83.69 0.75 0.86
10 B1 1121 1065 1.45 1.35 0.75 0.86
11 B1 588 558 76.66 0.67 0.75 0.86
12 B2 3298 3132 1.09 72.73 0.75 0.86
13 B2 1075 1021 17.82 0.00 0.75 0.86
14 B2 1040 987 38.34 0.00 0.75 0.86
15 B2 804 763 13.39 14.35 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12387.1 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 11761.6 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-pVTZ
ABC
1.00207 0.73453 0.46290

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.862
C2 0.000 0.649 -0.500
C3 0.000 -0.649 -0.500
H4 0.000 1.579 -1.036
H5 0.000 -1.579 -1.036
H6 0.912 0.000 1.448
H7 -0.912 0.000 1.448

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.50811.50812.46852.46851.08481.0848
C21.50811.29871.07322.29192.24702.2470
C31.50811.29872.29191.07322.24702.2470
H42.46851.07322.29193.15783.08183.0818
H52.46852.29191.07323.15783.08183.0818
H61.08482.24702.24703.08183.08181.8246
H71.08482.24702.24703.08183.08181.8246

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.495 C1 C2 H4 145.491
C1 C3 C2 64.495 C1 C3 H5 145.491
C2 C1 C3 51.009 C2 C1 H6 119.229
C2 C1 H7 119.229 C2 C3 H5 150.014
C3 C1 H6 119.229 C3 C1 H7 119.229
C3 C2 H4 150.014 H6 C1 H7 114.493
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability