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All results from a given calculation for C4H8 (cyclobutane)

using model chemistry: wB97X-D/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at wB97X-D/cc-pVTZ
 hartrees
Energy at 0K-157.218829
Energy at 298.15K-157.227912
HF Energy-157.218829
Nuclear repulsion energy127.377065
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-pVTZ
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 3114 2977 0.00      
2 A1 3082 2946 0.00      
3 A1 1520 1453 0.00      
4 A1 1177 1125 0.00      
5 A1 1034 988 0.00      
6 A1 161 154 0.00      
7 A2 1271 1215 0.00      
8 A2 976 933 0.00      
9 B1 1260 1204 0.00      
10 B1 1192 1140 0.00      
11 B1 965 923 0.00      
12 B2 3146 3007 95.85      
13 B2 3073 2938 10.48      
14 B2 1482 1417 3.77      
15 B2 885 846 0.00      
16 B2 630 603 2.60      
17 E 3128 2991 17.40      
17 E 3128 2991 17.40      
18 E 3075 2940 80.03      
18 E 3075 2940 80.03      
19 E 1479 1414 1.64      
19 E 1479 1414 1.64      
20 E 1298 1241 2.26      
20 E 1298 1241 2.26      
21 E 1260 1204 0.03      
21 E 1260 1204 0.03      
22 E 931 890 2.64      
22 E 931 890 2.64      
23 E 751 718 0.31      
23 E 751 718 0.31      

Unscaled Zero Point Vibrational Energy (zpe) 24405.9 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 23332.0 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-pVTZ
ABC
0.35935 0.35935 0.21252

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

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.094 0.008
C2 0.000 -1.094 0.008
C3 -1.094 0.000 -0.008
C4 1.094 0.000 -0.008
H5 0.000 1.722 0.898
H6 0.000 1.749 -0.862
H7 0.000 -1.722 0.898
H8 0.000 -1.749 -0.862
H9 -1.722 0.000 -0.898
H10 -1.749 0.000 0.862
H11 1.722 0.000 -0.898
H12 1.749 0.000 0.862

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C12.18831.54751.54751.08901.08872.95322.97322.23212.23282.23212.2328
C22.18831.54751.54752.95322.97321.08901.08872.23212.23282.23212.2328
C31.54751.54752.18832.23212.23282.23212.23281.08901.08872.95322.9732
C41.54751.54752.18832.23212.23282.23212.23282.95322.97321.08901.0887
H51.08902.95322.23212.23211.76003.44343.89143.02552.45453.02552.4545
H61.08872.97322.23282.23281.76003.89143.49802.45453.01482.45453.0148
H72.95321.08902.23212.23213.44343.89141.76003.02552.45453.02552.4545
H82.97321.08872.23282.23283.89143.49801.76002.45453.01482.45453.0148
H92.23212.23211.08902.95323.02552.45453.02552.45451.76003.44343.8914
H102.23282.23281.08872.97322.45453.01482.45453.01481.76003.89143.4980
H112.23212.23212.95321.08903.02552.45453.02552.45453.44343.89141.7600
H122.23282.23282.97321.08872.45453.01482.45453.01483.89143.49801.7600

picture of cyclobutane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C2 89.994 C1 C3 H9 114.571
C1 C3 H10 114.652 C1 C4 C2 89.994
C1 C4 H11 114.571 C1 C4 H12 114.652
C2 C3 H9 114.571 C2 C3 H10 114.652
C2 C4 H11 114.571 C2 C4 H12 114.652
C3 C1 C4 89.994 C3 C1 H5 114.571
C3 C1 H6 114.652 C3 C2 C4 89.994
C3 C2 H7 114.571 C3 C2 H8 114.652
C4 C1 H5 114.571 C4 C1 H6 114.652
C4 C2 H7 114.571 C4 C2 H8 114.652
H5 C1 H6 107.837 H7 C2 H8 107.837
H9 C3 H10 107.837 H11 C4 H12 107.837
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.169      
2 C -0.169      
3 C -0.169      
4 C -0.169      
5 H 0.084      
6 H 0.085      
7 H 0.084      
8 H 0.085      
9 H 0.084      
10 H 0.085      
11 H 0.084      
12 H 0.085      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.178 0.000 0.000
y 0.000 -27.178 0.000
z 0.000 0.000 -25.655
Traceless
 xyz
x -0.762 0.000 0.000
y 0.000 -0.762 0.000
z 0.000 0.000 1.523
Polar
3z2-r23.047
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.029 0.000 0.000
y 0.000 7.029 0.000
z 0.000 0.000 6.311


<r2> (average value of r2) Å2
<r2> 74.704
(<r2>)1/2 8.643