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All results from a given calculation for C4H6 (Cyclobutene)

using model chemistry: wB97X-D/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 wB97X-D/cc-pVDZ
 hartrees
Energy at 0K-155.934018
Energy at 298.15K-155.940308
HF Energy-155.934018
Nuclear repulsion energy113.255653
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 wB97X-D/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 3258 3104 22.62      
2 A1 3082 2936 47.87      
3 A1 1677 1597 2.16      
4 A1 1512 1440 0.33      
5 A1 1248 1189 2.82      
6 A1 1158 1103 0.18      
7 A1 1021 973 0.06      
8 A1 918 875 1.87      
9 A2 3124 2976 0.00      
10 A2 1188 1131 0.00      
11 A2 1054 1004 0.00      
12 A2 953 908 0.00      
13 A2 324 308 0.00      
14 B1 3138 2989 49.82      
15 B1 1118 1065 7.50      
16 B1 888 846 19.23      
17 B1 664 633 61.02      
18 B2 3226 3073 15.73      
19 B2 3076 2931 49.05      
20 B2 1485 1415 0.73      
21 B2 1350 1286 15.06      
22 B2 1260 1200 4.93      
23 B2 922 879 16.68      
24 B2 863 822 1.03      

Unscaled Zero Point Vibrational Energy (zpe) 19253.2 cm-1
Scaled (by 0.9526) Zero Point Vibrational Energy (zpe) 18340.6 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 wB97X-D/cc-pVDZ
ABC
0.43305 0.40984 0.22883

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.669 0.813
C2 0.000 -0.669 0.813
C3 0.000 0.783 -0.698
C4 0.000 -0.783 -0.698
H5 0.000 1.417 1.599
H6 0.000 -1.417 1.599
H7 0.890 1.241 -1.142
H8 -0.890 -1.241 -1.142
H9 -0.890 1.241 -1.142
H10 0.890 -1.241 -1.142

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10
C11.33851.51512.09531.08502.22932.22242.87432.22242.8743
C21.33852.09531.51512.22931.08502.87432.22242.87432.2224
C31.51512.09531.56502.38333.18031.09512.25481.09512.2548
C42.09531.51511.56503.18032.38332.25481.09512.25481.0951
H51.08502.22932.38333.18032.83352.88703.92032.88703.9203
H62.22931.08503.18032.38332.83353.92032.88703.92032.8870
H72.22242.87431.09512.25482.88703.92033.05471.78032.4823
H82.87432.22242.25481.09513.92032.88703.05472.48231.7803
H92.22242.87431.09512.25482.88703.92031.78032.48233.0547
H102.87432.22242.25481.09513.92032.88702.48231.78033.0547

picture of Cyclobutene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 94.288 C1 C2 H6 133.548
C1 C3 C4 85.712 C1 C3 H7 115.791
C1 C3 H9 115.791 C2 C1 C3 94.288
C2 C1 H5 133.548 C2 C4 C3 85.712
C2 C4 H8 115.791 C2 C4 H10 115.791
C3 C1 H5 132.163 C3 C4 H8 114.759
C3 C4 H10 114.759 C4 C2 H6 132.163
C4 C3 H7 114.759 C4 C3 H9 114.759
H7 C3 H9 108.742 H8 C4 H10 108.742
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.116      
2 C -0.116      
3 C -0.342      
4 C -0.342      
5 H 0.144      
6 H 0.144      
7 H 0.157      
8 H 0.157      
9 H 0.157      
10 H 0.157      


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 -0.225 0.225
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.169 0.000 0.000
y 0.000 -24.073 0.000
z 0.000 0.000 -24.653
Traceless
 xyz
x -1.805 0.000 0.000
y 0.000 1.337 0.000
z 0.000 0.000 0.468
Polar
3z2-r20.936
x2-y2-2.095
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.170 0.000 0.000
y 0.000 7.638 0.000
z 0.000 0.000 6.641


<r2> (average value of r2) Å2
<r2> 65.790
(<r2>)1/2 8.111