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All results from a given calculation for C4H6 (Methylenecyclopropane)

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-155.599866
Energy at 298.15K-155.605630
HF Energy-154.942419
Nuclear repulsion energy109.514756
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 3174 3014 9.84      
2 A1 3166 3006 5.47      
3 A1 1840 1747 2.22      
4 A1 1496 1421 0.16      
5 A1 1455 1382 0.76      
6 A1 1073 1018 4.50      
7 A1 1034 982 4.94      
8 A1 753 715 4.41      
9 A2 3252 3088 0.00      
10 A2 1177 1118 0.00      
11 A2 967 918 0.00      
12 A2 623 592 0.00      
13 B1 3264 3099 6.37      
14 B1 1102 1047 2.28      
15 B1 923 876 39.73      
16 B1 759 720 1.52      
17 B1 282 267 4.54      
18 B2 3268 3103 5.90      
19 B2 3163 3004 8.33      
20 B2 1459 1386 1.88      
21 B2 1150 1092 6.80      
22 B2 1069 1015 1.59      
23 B2 919 873 14.68      
24 B2 352 335 0.32      

Unscaled Zero Point Vibrational Energy (zpe) 18859.6 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 17907.2 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
0.65451 0.22987 0.18250

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 1.651
C2 0.000 0.000 0.306
H3 0.000 0.895 2.169
H4 0.000 -0.895 2.169
C5 0.000 0.748 -0.892
C6 0.000 -0.748 -0.892
H7 0.917 0.927 -1.345
H8 -0.917 0.927 -1.345
H9 -0.917 -0.927 -1.345
H10 0.917 -0.927 -1.345

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.34531.03441.03442.65102.65103.26763.26763.26763.2676
C21.34532.06742.06741.41221.41222.10382.10382.10382.1038
H31.03442.06741.79053.06513.47453.63203.63204.06354.0635
H41.03442.06741.79053.47453.06514.06354.06353.63203.6320
C52.65101.41223.06513.47451.49521.03871.03871.96251.9625
C62.65101.41223.47453.06511.49521.96251.96251.03871.0387
H73.26762.10383.63204.06351.03871.96251.83492.60871.8543
H83.26762.10383.63204.06351.03871.96251.83491.85432.6087
H93.26762.10384.06353.63201.96251.03872.60871.85431.8349
H103.26762.10384.06353.63201.96251.03871.85432.60871.8349

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.036 C1 C2 C6 148.036
C2 C1 H3 120.061 C2 C1 H4 120.061
C2 C5 C6 58.036 C2 C5 H7 117.465
C2 C5 H8 117.465 C2 C6 C5 58.036
C2 C6 H9 117.465 C2 C6 H10 117.465
H3 C1 H4 119.879 C5 C2 C6 63.928
C5 C6 H9 99.957 C5 C6 H10 99.957
C6 C5 H7 99.957 C6 C5 H8 99.957
H7 C5 H8 124.088 H9 C6 H10 124.088
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability