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All results from a given calculation for C4H6 (Cyclobutene)

using model chemistry: B97D3/TZVP

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/TZVP
 hartrees
Energy at 0K-155.919976
Energy at 298.15K-155.926141
HF Energy-155.919976
Nuclear repulsion energy112.856899
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/TZVP
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 3143 3098 29.35      
2 A1 2987 2944 57.42      
3 A1 1592 1569 1.76      
4 A1 1458 1437 0.23      
5 A1 1183 1166 2.26      
6 A1 1109 1093 0.04      
7 A1 979 965 0.09      
8 A1 861 848 1.35      
9 A2 3021 2977 0.00      
10 A2 1142 1126 0.00      
11 A2 1016 1002 0.00      
12 A2 906 893 0.00      
13 A2 314 310 0.00      
14 B1 3035 2992 59.60      
15 B1 1076 1061 6.16      
16 B1 851 839 15.92      
17 B1 630 621 53.30      
18 B2 3112 3067 21.57      
19 B2 2983 2940 53.92      
20 B2 1440 1419 0.46      
21 B2 1286 1268 13.20      
22 B2 1207 1190 4.88      
23 B2 874 862 14.25      
24 B2 860 847 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 18532.2 cm-1
Scaled (by 0.9856) Zero Point Vibrational Energy (zpe) 18265.4 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 B97D3/TZVP
ABC
0.42917 0.40750 0.22707

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.672 0.815
C2 0.000 -0.672 0.815
C3 0.000 0.788 -0.701
C4 0.000 -0.788 -0.701
H5 0.000 1.421 1.603
H6 0.000 -1.421 1.603
H7 0.892 1.247 -1.146
H8 -0.892 -1.247 -1.146
H9 -0.892 1.247 -1.146
H10 0.892 -1.247 -1.146

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.34361.52012.10431.08782.23682.22952.88492.22952.8849
C21.34362.10431.52012.23681.08782.88492.22952.88492.2295
C31.52012.10431.57582.38953.19211.09732.26611.09732.2661
C42.10431.52011.57583.19212.38952.26611.09732.26611.0973
H51.08782.23682.38953.19212.84292.89523.93382.89523.9338
H62.23681.08783.19212.38952.84293.93382.89523.93382.8952
H72.22952.88491.09732.26612.89523.93383.06641.78312.4947
H82.88492.22952.26611.09733.93382.89523.06642.49471.7831
H92.22952.88491.09732.26612.89523.93381.78312.49473.0664
H102.88492.22952.26611.09733.93382.89522.49471.78313.0664

picture of Cyclobutene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 94.379 C1 C2 H6 133.560
C1 C3 C4 85.621 C1 C3 H7 115.873
C1 C3 H9 115.873 C2 C1 C3 94.379
C2 C1 H5 133.560 C2 C4 C3 85.621
C2 C4 H8 115.873 C2 C4 H10 115.873
C3 C1 H5 132.061 C3 C4 H8 114.753
C3 C4 H10 114.753 C4 C2 H6 132.061
C4 C3 H7 114.753 C4 C3 H9 114.753
H7 C3 H9 108.685 H8 C4 H10 108.685
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.121      
2 C -0.121      
3 C -0.202      
4 C -0.202      
5 H 0.100      
6 H 0.100      
7 H 0.111      
8 H 0.111      
9 H 0.111      
10 H 0.111      


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 -0.216 0.216
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.143 0.000 0.000
y 0.000 -24.351 0.000
z 0.000 0.000 -24.820
Traceless
 xyz
x -1.558 0.000 0.000
y 0.000 1.130 0.000
z 0.000 0.000 0.427
Polar
3z2-r20.855
x2-y2-1.792
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.210 0.000 0.000
y 0.000 7.872 0.000
z 0.000 0.000 7.082


<r2> (average value of r2) Å2
<r2> 66.244
(<r2>)1/2 8.139