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All results from a given calculation for C5H8 (Cyclobutane, methylene-)

using model chemistry: PBEPBE/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/6-31G*
 hartrees
Energy at 0K-195.018556
Energy at 298.15K-195.026880
Nuclear repulsion energy166.713536
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 PBEPBE/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3087 3043 8.73      
2 A' 3074 3030 39.38      
3 A' 3035 2992 18.95      
4 A' 3017 2973 40.94      
5 A' 2984 2942 12.91      
6 A' 1718 1694 19.63      
7 A' 1478 1457 0.02      
8 A' 1453 1432 1.75      
9 A' 1416 1396 0.54      
10 A' 1231 1214 0.13      
11 A' 1196 1179 0.06      
12 A' 1067 1052 0.10      
13 A' 964 950 0.34      
14 A' 875 862 0.28      
15 A' 854 842 41.11      
16 A' 738 727 2.50      
17 A' 647 638 1.60      
18 A' 373 367 5.05      
19 A' 107 105 0.03      
20 A" 3166 3120 13.71      
21 A" 3039 2995 19.50      
22 A" 2980 2937 42.82      
23 A" 1439 1418 2.49      
24 A" 1255 1237 0.21      
25 A" 1215 1197 0.05      
26 A" 1191 1174 1.40      
27 A" 1161 1145 2.41      
28 A" 1020 1006 0.15      
29 A" 922 909 0.85      
30 A" 894 881 0.77      
31 A" 793 781 0.16      
32 A" 626 617 0.14      
33 A" 345 340 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 24679.1 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 24326.2 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 PBEPBE/6-31G*
ABC
0.34366 0.15237 0.11482

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.266 -0.380 1.094
C2 0.266 -0.380 -1.094
C3 -0.113 0.613 0.000
C4 0.266 -1.493 0.000
C5 -0.718 1.806 0.000
H6 -0.427 -0.490 1.946
H7 -0.427 -0.490 -1.946
H8 1.280 -0.196 1.497
H9 1.280 -0.196 -1.497
H10 -0.977 2.318 0.933
H11 -0.977 2.318 -0.933
H12 1.114 -2.197 0.000
H13 -0.674 -2.068 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C12.18771.52501.56112.63511.10373.11951.10622.78782.97503.59642.28462.2204
C22.18771.52501.56112.63513.11951.10372.78781.10623.59642.97502.28462.2204
C31.52501.52502.14011.33802.25822.25822.19892.19892.12742.12743.06652.7383
C41.56111.56112.14013.44352.29642.29642.22512.22514.11654.11651.10181.1019
C52.63512.63511.33803.44353.02383.02383.20013.20011.09561.09564.40303.8743
H61.10373.11952.25822.29643.02383.89151.78913.85343.03514.05923.01262.5173
H73.11951.10372.25822.29643.02383.89153.85341.78914.05923.03513.01262.5173
H81.10622.78782.19892.22513.20011.78913.85342.99323.42544.16192.50483.0922
H92.78781.10622.19892.22513.20013.85341.78912.99324.16193.42542.50483.0922
H102.97503.59642.12744.11651.09563.03514.05923.42544.16191.86685.06314.4941
H113.59642.97502.12744.11651.09564.05923.03514.16193.42541.86685.06314.4941
H122.28462.28463.06651.10184.40303.01263.01262.50482.50485.06315.06311.7928
H132.22042.22042.73831.10193.87432.51732.51733.09223.09224.49414.49411.7928

picture of Cyclobutane, methylene- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 C2 91.663 C1 C3 C5 133.873
C1 C4 C2 88.964 C1 C4 H12 117.121
C1 C4 H13 111.823 C2 C3 C5 133.873
C2 C4 H12 117.121 C2 C4 H13 111.823
C3 C1 C4 87.806 C3 C1 H6 117.533
C3 C1 H8 112.410 C3 C2 C4 87.806
C3 C2 H7 117.533 C3 C2 H9 112.410
C3 C5 H10 121.577 C3 C5 H11 121.577
C4 C1 H6 118.013 C4 C1 H8 111.941
C4 C2 H7 118.013 C4 C2 H9 111.941
H6 C1 H8 108.115 H7 C2 H9 108.115
H10 C5 H11 116.845 H12 C4 H13 108.886
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.352      
2 C -0.352      
3 C 0.223      
4 C -0.314      
5 C -0.459      
6 H 0.162      
7 H 0.162      
8 H 0.166      
9 H 0.166      
10 H 0.143      
11 H 0.143      
12 H 0.149      
13 H 0.162      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.196 -0.512 0.000 0.548
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.498 -0.559 0.000
y -0.559 -31.809 0.000
z 0.000 0.000 -30.252
Traceless
 xyz
x -0.468 -0.559 0.000
y -0.559 -0.934 0.000
z 0.000 0.000 1.402
Polar
3z2-r22.804
x2-y20.310
xy-0.559
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.268 -1.753 0.000
y -1.753 9.158 0.000
z 0.000 0.000 7.522


<r2> (average value of r2) Å2
<r2> 116.674
(<r2>)1/2 10.802