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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-116.300283
Energy at 298.15K-116.303532
HF Energy-115.838028
Nuclear repulsion energy63.835570
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 MP2/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3382 3194 0.38 128.65 0.13 0.24
2 A1 3133 2959 43.57 107.58 0.13 0.24
3 A1 1702 1608 12.75 20.40 0.17 0.28
4 A1 1541 1456 2.23 14.42 0.29 0.45
5 A1 1188 1122 0.57 9.46 0.13 0.24
6 A1 955 902 4.13 7.99 0.62 0.76
7 A2 1038 980 0.00 11.73 0.75 0.86
8 A2 867 819 0.00 0.01 0.75 0.86
9 B1 3214 3036 31.28 69.49 0.75 0.86
10 B1 1126 1064 1.75 2.34 0.75 0.86
11 B1 625 590 62.13 1.14 0.75 0.86
12 B2 3335 3150 1.56 62.89 0.75 0.86
13 B2 1086 1026 25.50 0.13 0.75 0.86
14 B2 1046 988 29.67 0.12 0.75 0.86
15 B2 824 778 10.37 15.68 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12531.4 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 11835.9 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 MP2/6-31G(2df,p)
ABC
0.99996 0.73597 0.46302

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.859
C2 0.000 0.650 -0.499
C3 0.000 -0.650 -0.499
H4 0.000 1.582 -1.033
H5 0.000 -1.582 -1.033
H6 0.912 0.000 1.452
H7 -0.912 0.000 1.452

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.50611.50612.46612.46611.08791.0879
C21.50611.29991.07362.29452.24992.2499
C31.50611.29992.29451.07362.24992.2499
H42.46611.07362.29453.16353.08343.0834
H52.46612.29451.07363.16353.08343.0834
H61.08792.24992.24993.08343.08341.8247
H71.08792.24992.24993.08343.08341.8247

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.436 C1 C2 H4 145.348
C1 C3 C2 64.436 C1 C3 H5 145.348
C2 C1 C3 51.127 C2 C1 H6 119.429
C2 C1 H7 119.429 C2 C3 H5 150.215
C3 C1 H6 119.429 C3 C1 H7 119.429
C3 C2 H4 150.215 H6 C1 H7 113.996
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability