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

using model chemistry: B3LYP/CEP-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 B3LYP/CEP-31G*
 hartrees
Energy at 0K-32.999292
Energy at 298.15K-33.007604
Nuclear repulsion energy89.583012
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 B3LYP/CEP-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' 3135 3027 13.93      
2 A' 3134 3027 83.57      
3 A' 3092 2986 16.78      
4 A' 3072 2967 58.42      
5 A' 3047 2942 17.39      
6 A' 1750 1690 26.45      
7 A' 1501 1449 0.01      
8 A' 1469 1418 2.39      
9 A' 1425 1376 0.74      
10 A' 1260 1217 0.38      
11 A' 1206 1164 0.11      
12 A' 1022 987 0.24      
13 A' 960 927 0.67      
14 A' 888 857 66.51      
15 A' 880 850 20.02      
16 A' 733 707 4.80      
17 A' 653 631 2.87      
18 A' 341 330 6.37      
19 A' 118 114 0.09      
20 A" 3205 3095 19.46      
21 A" 3103 2996 17.22      
22 A" 3045 2940 64.36      
23 A" 1461 1411 3.19      
24 A" 1283 1239 0.04      
25 A" 1239 1196 0.05      
26 A" 1215 1174 2.92      
27 A" 1181 1141 5.28      
28 A" 1033 997 0.14      
29 A" 920 888 1.86      
30 A" 892 861 0.78      
31 A" 791 764 0.55      
32 A" 627 605 0.41      
33 A" 332 321 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 25005.5 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 24147.8 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 B3LYP/CEP-31G*
ABC
0.33737 0.14935 0.11261

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.206 -0.422 1.106
C2 0.206 -0.422 -1.106
C3 0.000 0.630 0.000
C4 0.023 -1.532 0.000
C5 -0.434 1.919 0.000
H6 -0.506 -0.412 1.948
H7 -0.506 -0.412 -1.948
H8 1.235 -0.412 1.512
H9 1.235 -0.412 -1.512
H10 -0.613 2.460 0.937
H11 -0.613 2.460 -0.937
H12 0.753 -2.357 0.000
H13 -0.996 -1.949 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C12.21271.54061.57772.66701.10223.13591.10532.81273.00123.62652.29522.2365
C22.21271.54061.57772.66703.13591.10222.81271.10533.62653.00122.29522.2365
C31.54061.54062.16201.35972.26602.26602.21252.21252.14532.14533.08072.7647
C41.57771.57772.16203.48062.30812.30812.23732.23734.14954.14951.10151.1018
C52.66702.66701.35973.48063.03813.03813.24073.24071.09651.09654.43763.9081
H61.10223.13592.26602.30813.03813.89541.79393.87243.04694.07183.02682.5292
H73.13591.10222.26602.30813.03813.89543.87241.79394.07183.04693.02682.5292
H81.10532.81272.21252.23733.24071.79393.87243.02333.46324.20192.51013.1022
H92.81271.10532.21252.23733.24073.87241.79393.02334.20193.46322.51013.1022
H103.00123.62652.14534.14951.09653.04694.07183.46324.20191.87315.09414.5239
H113.62653.00122.14534.14951.09654.07183.04694.20193.46321.87315.09414.5239
H122.29522.29523.08071.10154.43763.02683.02682.51012.51015.09415.09411.7961
H132.23652.23652.76471.10183.90812.52922.52923.10223.10224.52394.52391.7961

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 91.800 C1 C3 C5 133.624
C1 C4 C2 89.056 C1 C4 H12 116.772
C1 C4 H13 111.936 C2 C3 C5 133.624
C2 C4 H12 116.772 C2 C4 H13 111.936
C3 C1 C4 87.780 C3 C1 H6 117.091
C3 C1 H8 112.446 C3 C2 C4 87.780
C3 C2 H7 117.091 C3 C2 H9 112.446
C3 C5 H10 121.340 C3 C5 H11 121.340
C4 C1 H6 117.832 C4 C1 H8 111.794
C4 C2 H7 117.832 C4 C2 H9 111.794
H6 C1 H8 108.717 H7 C2 H9 108.717
H10 C5 H11 117.319 H12 C4 H13 109.213
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.449      
2 C -0.449      
3 C 0.308      
4 C -0.313      
5 C -0.529      
6 H 0.189      
7 H 0.189      
8 H 0.141      
9 H 0.141      
10 H 0.218      
11 H 0.218      
12 H 0.189      
13 H 0.147      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.102 -0.658 0.000 0.666
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.640 -0.780 0.000
y -0.780 -31.754 0.000
z 0.000 0.000 -30.184
Traceless
 xyz
x -0.671 -0.780 0.000
y -0.780 -0.842 0.000
z 0.000 0.000 1.514
Polar
3z2-r23.027
x2-y20.114
xy-0.780
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.502 0.001 -0.420
y 0.001 7.501 -0.001
z -0.420 -0.001 5.329


<r2> (average value of r2) Å2
<r2> 99.414
(<r2>)1/2 9.971