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All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: QCISD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/6-311G*
 hartrees
Energy at 0K-155.491398
Energy at 298.15K-155.497144
HF Energy-154.912954
Nuclear repulsion energy108.848503
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 QCISD/6-311G*
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 3138 3004 13.43      
2 A1 3126 2993 10.99      
3 A1 1852 1773 2.27      
4 A1 1510 1446 0.02      
5 A1 1461 1399 1.24      
6 A1 1077 1031 0.12      
7 A1 1063 1018 8.29      
8 A1 750 718 6.28      
9 A2 3201 3064 0.00      
10 A2 1190 1139 0.00      
11 A2 967 926 0.00      
12 A2 625 599 0.00      
13 B1 3213 3076 20.96      
14 B1 1116 1068 2.08      
15 B1 880 843 44.47      
16 B1 769 736 0.88      
17 B1 279 267 4.97      
18 B2 3224 3087 13.84      
19 B2 3121 2989 16.60      
20 B2 1476 1413 2.09      
21 B2 1160 1111 7.38      
22 B2 1090 1044 3.53      
23 B2 918 879 12.71      
24 B2 352 337 0.38      

Unscaled Zero Point Vibrational Energy (zpe) 18778.4 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 17978.4 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 QCISD/6-311G*
ABC
0.64823 0.22682 0.18019

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

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 0.319
H3 0.000 0.930 2.212
H4 0.000 -0.930 2.212
C5 0.000 0.772 -0.938
C6 0.000 -0.772 -0.938
H7 0.916 1.276 -1.242
H8 -0.916 1.276 -1.242
H9 -0.916 -1.276 -1.242
H10 0.916 -1.276 -1.242

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.32801.08841.08842.69742.69743.28813.28813.28813.2881
C21.32802.10922.10921.47481.47482.21432.21432.21432.2143
H31.08842.10921.86063.15343.58023.58973.58974.19934.1993
H41.08842.10921.86063.58023.15344.19934.19933.58973.5897
C52.69741.47483.15343.58021.54461.08891.08892.26432.2643
C62.69741.47483.58023.15341.54462.26432.26431.08891.0889
H73.28812.21433.58974.19931.08892.26431.83253.14152.5517
H83.28812.21433.58974.19931.08892.26431.83252.55173.1415
H93.28812.21434.19933.58972.26431.08893.14152.55171.8325
H103.28812.21434.19933.58972.26431.08892.55173.14151.8325

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.423 C1 C2 C6 148.423
C2 C1 H3 121.269 C2 C1 H4 121.269
C2 C5 C6 58.423 C2 C5 H7 118.695
C2 C5 H8 118.695 C2 C6 C5 58.423
C2 C6 H9 118.695 C2 C6 H10 118.695
H3 C1 H4 117.461 C5 C2 C6 63.154
C5 C6 H9 117.546 C5 C6 H10 117.546
C6 C5 H7 117.546 C6 C5 H8 117.546
H7 C5 H8 114.594 H9 C6 H10 114.594
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability