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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: MP2/cc-pVDZ

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-pVDZ
 hartrees
Energy at 0K-155.440758
Energy at 298.15K-155.446487
HF Energy-154.898067
Nuclear repulsion energy108.444232
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-pVDZ
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 3183 3032 10.11      
2 A1 3167 3016 6.11      
3 A1 1851 1763 0.71      
4 A1 1486 1415 0.06      
5 A1 1441 1373 0.35      
6 A1 1079 1028 2.94      
7 A1 1036 987 4.69      
8 A1 755 719 4.25      
9 A2 3259 3105 0.00      
10 A2 1168 1112 0.00      
11 A2 957 911 0.00      
12 A2 612 583 0.00      
13 B1 3271 3116 8.86      
14 B1 1093 1041 1.76      
15 B1 904 861 33.67      
16 B1 755 719 1.21      
17 B1 277 263 3.85      
18 B2 3287 3131 7.77      
19 B2 3164 3013 8.82      
20 B2 1441 1373 1.24      
21 B2 1149 1094 6.81      
22 B2 1063 1013 1.67      
23 B2 921 877 11.48      
24 B2 348 331 0.32      

Unscaled Zero Point Vibrational Energy (zpe) 18832.6 cm-1
Scaled (by 0.9525) Zero Point Vibrational Energy (zpe) 17938.0 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/cc-pVDZ
ABC
0.64346 0.22524 0.17904

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.654
C2 0.000 0.000 0.318
H3 0.000 0.939 2.217
H4 0.000 -0.939 2.217
C5 0.000 0.774 -0.940
C6 0.000 -0.774 -0.940
H7 0.924 1.278 -1.245
H8 -0.924 1.278 -1.245
H9 -0.924 -1.278 -1.245
H10 0.924 -1.278 -1.245

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.33631.09491.09492.70732.70733.29983.29983.29983.2998
C21.33632.11872.11871.47711.47712.21982.21982.21982.2198
H31.09492.11871.87833.16143.59223.59873.59874.21324.2132
H41.09492.11871.87833.59223.16144.21324.21323.59873.5987
C52.70731.47713.16143.59221.54891.09551.09552.27132.2713
C62.70731.47713.59223.16141.54892.27132.27131.09551.0955
H73.29982.21983.59874.21321.09552.27131.84843.15402.5556
H83.29982.21983.59874.21321.09552.27131.84842.55563.1540
H93.29982.21984.21323.59872.27131.09553.15402.55561.8484
H103.29982.21984.21323.59872.27131.09552.55563.15401.8484

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.379 C1 C2 C6 148.379
C2 C1 H3 120.938 C2 C1 H4 120.938
C2 C5 C6 58.379 C2 C5 H7 118.524
C2 C5 H8 118.524 C2 C6 C5 58.379
C2 C6 H9 118.524 C2 C6 H10 118.524
H3 C1 H4 118.123 C5 C2 C6 63.242
C5 C6 H9 117.352 C5 C6 H10 117.352
C6 C5 H7 117.352 C6 C5 H8 117.352
H7 C5 H8 115.046 H9 C6 H10 115.046
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability