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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: MP2=FULL/3-21G

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/3-21G
 hartrees
Energy at 0K-154.380007
Energy at 298.15K-154.385887
HF Energy-154.016721
Nuclear repulsion energy108.355142
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/3-21G
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 3189 3045 4.99      
2 A1 3166 3023 11.04      
3 A1 1821 1739 0.19      
4 A1 1565 1494 0.01      
5 A1 1537 1468 0.22      
6 A1 1121 1070 11.66      
7 A1 1000 955 1.83      
8 A1 701 669 5.50      
9 A2 3269 3121 0.00      
10 A2 1207 1152 0.00      
11 A2 1018 972 0.00      
12 A2 658 628 0.00      
13 B1 3283 3134 11.21      
14 B1 1168 1115 0.11      
15 B1 953 910 45.10      
16 B1 802 765 1.08      
17 B1 320 306 5.52      
18 B2 3246 3100 11.51      
19 B2 3184 3040 6.77      
20 B2 1543 1473 0.93      
21 B2 1189 1136 12.97      
22 B2 1143 1091 4.14      
23 B2 899 858 10.07      
24 B2 383 365 0.71      

Unscaled Zero Point Vibrational Energy (zpe) 19181.2 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 18314.2 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=FULL/3-21G
ABC
0.63347 0.22617 0.17863

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.647
C2 0.000 0.000 0.323
H3 0.000 0.925 2.217
H4 0.000 -0.925 2.217
C5 0.000 0.788 -0.940
C6 0.000 -0.788 -0.940
H7 0.917 1.281 -1.245
H8 -0.917 1.281 -1.245
H9 -0.917 -1.281 -1.245
H10 0.917 -1.281 -1.245

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.32371.08681.08682.70392.70393.29303.29303.29303.2930
C21.32372.10792.10791.48841.48842.22262.22262.22262.2226
H31.08682.10791.85033.16003.59173.59913.59914.20644.2064
H41.08682.10791.85033.59173.16004.20644.20643.59913.5991
C52.70391.48843.16003.59171.57511.08471.08472.28292.2829
C62.70391.48843.59173.16001.57512.28292.28291.08471.0847
H73.29302.22263.59914.20641.08472.28291.83313.15012.5618
H83.29302.22263.59914.20641.08472.28291.83312.56183.1501
H93.29302.22264.20643.59912.28291.08473.15012.56181.8331
H103.29302.22264.20643.59912.28291.08472.56183.15011.8331

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.054 C1 C2 C6 148.054
C2 C1 H3 121.654 C2 C1 H4 121.654
C2 C5 C6 58.054 C2 C5 H7 118.645
C2 C5 H8 118.645 C2 C6 C5 58.054
C2 C6 H9 118.645 C2 C6 H10 118.645
H3 C1 H4 116.692 C5 C2 C6 63.892
C5 C6 H9 117.053 C5 C6 H10 117.053
C6 C5 H7 117.053 C6 C5 H8 117.053
H7 C5 H8 115.340 H9 C6 H10 115.340
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability