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All results from a given calculation for C4H8 (cyclobutane)

using model chemistry: wB97X-D/SDD

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/SDD
 hartrees
Energy at 0K-157.144233
Energy at 298.15K-157.153323
HF Energy-157.144233
Nuclear repulsion energy126.085500
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/SDD
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 3162 3162 0.00      
2 A1 3122 3122 0.00      
3 A1 1552 1552 0.00      
4 A1 1201 1201 0.00      
5 A1 1040 1040 0.00      
6 A1 139 139 0.00      
7 A2 1309 1309 0.00      
8 A2 993 993 0.00      
9 B1 1277 1277 0.00      
10 B1 1210 1210 0.00      
11 B1 1001 1001 0.00      
12 B2 3201 3201 158.61      
13 B2 3101 3101 11.17      
14 B2 1520 1520 4.58      
15 B2 878 878 2.04      
16 B2 673 673 7.39      
17 E 3177 3177 14.58      
17 E 3177 3177 14.58      
18 E 3108 3108 109.73      
18 E 3108 3108 109.73      
19 E 1521 1521 6.61      
19 E 1521 1521 6.61      
20 E 1320 1320 7.31      
20 E 1320 1320 7.31      
21 E 1267 1267 0.19      
21 E 1267 1267 0.19      
22 E 948 948 8.87      
22 E 948 948 8.87      
23 E 782 782 0.49      
23 E 782 782 0.49      

Unscaled Zero Point Vibrational Energy (zpe) 24811.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 24811.4 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 wB97X-D/SDD
ABC
0.35229 0.35229 0.20639

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

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.096 0.101
C2 0.000 -1.096 0.101
C3 -1.096 0.000 -0.101
C4 1.096 0.000 -0.101
H5 0.000 1.498 1.119
H6 0.000 1.930 -0.605
H7 0.000 -1.498 1.119
H8 0.000 -1.930 -0.605
H9 -1.498 0.000 -1.119
H10 -1.930 0.000 0.605
H11 1.498 0.000 -1.119
H12 1.930 0.000 0.605

Atom - Atom Distances (Å)
  C1 C2 C3 C4 H5 H6 H7 H8 H9 H10 H11 H12
C12.19141.56271.56271.09411.09272.78603.10662.22082.27542.22082.2754
C22.19141.56271.56272.78603.10661.09411.09272.22082.27542.22082.2754
C31.56271.56272.19142.22082.27542.22082.27541.09411.09272.78603.1066
C41.56271.56272.19142.22082.27542.22082.27542.78603.10661.09411.0927
H51.09412.78602.22082.22081.77692.99573.83643.08112.49613.08112.4961
H61.09273.10662.27542.27541.77693.83643.85912.49612.98502.49612.9850
H72.78601.09412.22082.22082.99573.83641.77693.08112.49613.08112.4961
H83.10661.09272.27542.27543.83643.85911.77692.49612.98502.49612.9850
H92.22082.22081.09412.78603.08112.49613.08112.49611.77692.99573.8364
H102.27542.27541.09273.10662.49612.98502.49612.98501.77693.83643.8591
H112.22082.22082.78601.09413.08112.49613.08112.49612.99573.83641.7769
H122.27542.27543.10661.09272.49612.98502.49612.98503.83643.85911.7769

picture of cyclobutane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C2 89.040 C1 C3 H9 112.217
C1 C3 H10 116.836 C1 C4 C2 89.040
C1 C4 H11 112.217 C1 C4 H12 116.836
C2 C3 H9 112.217 C2 C3 H10 116.836
C2 C4 H11 112.217 C2 C4 H12 116.836
C3 C1 C4 89.040 C3 C1 H5 112.217
C3 C1 H6 116.836 C3 C2 C4 89.040
C3 C2 H7 112.217 C3 C2 H8 116.836
C4 C1 H5 112.217 C4 C1 H6 116.836
C4 C2 H7 112.217 C4 C2 H8 116.836
H5 C1 H6 108.692 H7 C2 H8 108.692
H9 C3 H10 108.692 H11 C4 H12 108.692
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.404      
2 C -0.404      
3 C -0.404      
4 C -0.404      
5 H 0.200      
6 H 0.204      
7 H 0.200      
8 H 0.204      
9 H 0.200      
10 H 0.204      
11 H 0.200      
12 H 0.204      


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 -26.721 0.000 0.000
y 0.000 -26.721 0.000
z 0.000 0.000 -25.104
Traceless
 xyz
x -0.809 0.000 0.000
y 0.000 -0.809 0.000
z 0.000 0.000 1.617
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 6.148 0.000 0.000
y 0.000 6.148 0.000
z 0.000 0.000 5.382


<r2> (average value of r2) Å2
<r2> 75.748
(<r2>)1/2 8.703