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All results from a given calculation for C4H8 (cyclobutane)

using model chemistry: wB97X-D/6-311G*

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/6-311G*
 hartrees
Energy at 0K-157.194020
Energy at 298.15K-157.203125
HF Energy-157.194020
Nuclear repulsion energy127.115984
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/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 3108 3108 0.00      
2 A1 3078 3078 0.00      
3 A1 1538 1538 0.00      
4 A1 1183 1183 0.00      
5 A1 1041 1041 0.00      
6 A1 175 175 0.00      
7 A2 1268 1268 0.00      
8 A2 984 984 0.00      
9 B1 1270 1270 0.00      
10 B1 1194 1194 0.00      
11 B1 969 969 0.00      
12 B2 3142 3142 123.24      
13 B2 3066 3066 11.13      
14 B2 1498 1498 4.76      
15 B2 890 890 0.00      
16 B2 638 638 2.98      
17 E 3123 3123 19.47      
17 E 3123 3123 19.47      
18 E 3069 3069 93.36      
18 E 3069 3069 93.36      
19 E 1496 1496 2.11      
19 E 1496 1496 2.11      
20 E 1304 1304 3.35      
20 E 1304 1304 3.35      
21 E 1267 1267 0.20      
21 E 1267 1267 0.20      
22 E 935 935 3.64      
22 E 935 935 3.64      
23 E 759 759 0.36      
23 E 759 759 0.36      

Unscaled Zero Point Vibrational Energy (zpe) 24472.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 24472.8 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/6-311G*
ABC
0.35796 0.35796 0.21178

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311G*

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.080 0.123
C2 0.000 -1.080 0.123
C3 -1.080 0.000 -0.123
C4 1.080 0.000 -0.123
H5 0.000 1.421 1.162
H6 0.000 1.957 -0.529
H7 0.000 -1.421 1.162
H8 0.000 -1.957 -0.529
H9 -1.421 0.000 -1.162
H10 -1.957 0.000 0.529
H11 1.421 0.000 -1.162
H12 1.957 0.000 0.529

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C12.16081.54751.54751.09331.09222.70853.10622.19922.27172.19922.2717
C22.16081.54751.54752.70853.10621.09331.09222.19922.27172.19922.2717
C31.54751.54752.16082.19922.27172.19922.27171.09331.09222.70853.1062
C41.54751.54752.16082.19922.27172.19922.27172.70853.10621.09331.0922
H51.09332.70852.19922.19921.77372.84183.77713.07202.49963.07202.4996
H61.09223.10622.27172.27171.77373.77713.91342.49962.96252.49962.9625
H72.70851.09332.19922.19922.84183.77711.77373.07202.49963.07202.4996
H83.10621.09222.27172.27173.77713.91341.77372.49962.96252.49962.9625
H92.19922.19921.09332.70853.07202.49963.07202.49961.77372.84183.7771
H102.27172.27171.09223.10622.49962.96252.49962.96251.77373.77713.9134
H112.19922.19922.70851.09333.07202.49963.07202.49962.84183.77711.7737
H122.27172.27173.10621.09222.49962.96252.49962.96253.77713.91341.7737

picture of cyclobutane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C2 88.555 C1 C3 H9 111.611
C1 C3 H10 117.734 C1 C4 C2 88.555
C1 C4 H11 111.611 C1 C4 H12 117.734
C2 C3 H9 111.611 C2 C3 H10 117.734
C2 C4 H11 111.611 C2 C4 H12 117.734
C3 C1 C4 88.555 C3 C1 H5 111.611
C3 C1 H6 117.734 C3 C2 C4 88.555
C3 C2 H7 111.611 C3 C2 H8 117.734
C4 C1 H5 111.611 C4 C1 H6 117.734
C4 C2 H7 111.611 C4 C2 H8 117.734
H5 C1 H6 108.500 H7 C2 H8 108.500
H9 C3 H10 108.500 H11 C4 H12 108.500
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.429      
2 C -0.429      
3 C -0.429      
4 C -0.429      
5 H 0.215      
6 H 0.213      
7 H 0.215      
8 H 0.213      
9 H 0.215      
10 H 0.213      
11 H 0.215      
12 H 0.213      


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 -27.293 0.000 0.000
y 0.000 -27.293 0.000
z 0.000 0.000 -25.676
Traceless
 xyz
x -0.809 0.000 0.000
y 0.000 -0.809 0.000
z 0.000 0.000 1.618
Polar
3z2-r23.235
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 6.616 0.000 0.000
y 0.000 6.616 0.000
z 0.000 0.000 6.031


<r2> (average value of r2) Å2
<r2> 74.995
(<r2>)1/2 8.660