return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C4H6 (Methylenecyclopropane)

using model chemistry: B97D3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B97D3/6-31G*
 hartrees
Energy at 0K-155.857038
Energy at 298.15K-155.862678
HF Energy-155.857038
Nuclear repulsion energy 
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 B97D3/6-31G*
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 3086 3026 20.30      
2 A1 3060 3000 22.02      
3 A1 1810 1775 3.35      
4 A1 1480 1451 0.06      
5 A1 1442 1414 0.00      
6 A1 1060 1039 2.09      
7 A1 1020 1000 3.84      
8 A1 748 734 4.15      
9 A2 3128 3067 0.00      
10 A2 1157 1134 0.00      
11 A2 949 931 0.00      
12 A2 604 592 0.00      
13 B1 3142 3080 30.24      
14 B1 1083 1062 0.44      
15 B1 872 855 37.60      
16 B1 748 733 1.03      
17 B1 271 266 2.54      
18 B2 3163 3101 21.40      
19 B2 3061 3001 25.86      
20 B2 1448 1420 0.31      
21 B2 1132 1110 6.93      
22 B2 1048 1027 2.65      
23 B2 900 882 11.70      
24 B2 341 334 0.25      

Unscaled Zero Point Vibrational Energy (zpe) 18377.1 cm-1
Scaled (by 0.9804) Zero Point Vibrational Energy (zpe) 18016.9 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 B97D3/6-31G*
ABC
0.64903 0.22694 0.18033

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.646
C2 0.000 0.000 0.317
H3 0.000 0.932 2.217
H4 0.000 -0.932 2.217
C5 0.000 0.770 -0.936
C6 0.000 -0.770 -0.936
H7 0.917 1.281 -1.244
H8 -0.917 1.281 -1.244
H9 -0.917 -1.281 -1.244
H10 0.917 -1.281 -1.244

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 H7 H8 H9 H10
C11.32861.09251.09252.69462.69463.29123.29123.29123.2912
C21.32862.11552.11551.47121.47122.21772.21772.21772.2177
H31.09252.11551.86313.15723.58283.59693.59694.20844.2084
H41.09252.11551.86313.58283.15724.20844.20843.59693.5969
C52.69461.47123.15723.58281.53961.09361.09362.26722.2672
C62.69461.47123.58283.15721.53962.26722.26721.09361.0936
H73.29122.21773.59694.20841.09362.26721.83323.15032.5619
H83.29122.21773.59694.20841.09362.26721.83322.56193.1503
H93.29122.21774.20843.59692.26721.09363.15032.56191.8332
H103.29122.21774.20843.59692.26721.09362.56193.15031.8332

picture of Methylenecyclopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 148.131 C1 C2 C6 148.131
C2 C1 H3 120.143 C2 C1 H4 120.143
C2 C5 C6 58.131 C2 C5 H7 117.502
C2 C5 H8 117.502 C2 C6 C5 58.131
C2 C6 H9 117.502 C2 C6 H10 117.502
H3 C1 H4 119.714 C5 C2 C6 63.739
C5 C6 H9 99.889 C5 C6 H10 99.889
C6 C5 H7 99.889 C6 C5 H8 99.889
H7 C5 H8 123.994 H9 C6 H10 123.994
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.447      
2 C 0.209      
3 H 0.144      
4 H 0.144      
5 C -0.360      
6 C -0.360      
7 H 0.167      
8 H 0.167      
9 H 0.167      
10 H 0.167      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.426 0.426
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.780 0.000 0.000
y 0.000 -23.878 0.000
z 0.000 0.000 -24.214
Traceless
 xyz
x -0.734 0.000 0.000
y 0.000 0.619 0.000
z 0.000 0.000 0.116
Polar
3z2-r20.231
x2-y2-0.902
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.030 0.000 0.000
y 0.000 5.911 0.000
z 0.000 0.000 8.399


<r2> (average value of r2) Å2
<r2> 77.338
(<r2>)1/2 8.794