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

using model chemistry: B3LYP/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 B3LYP/6-31G
 hartrees
Energy at 0K-195.247975
Energy at 298.15K-195.256381
Nuclear repulsion energy166.281939
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/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' 3155 3035 9.81      
2 A' 3145 3025 50.29      
3 A' 3100 2983 26.61      
4 A' 3088 2971 43.30      
5 A' 3059 2943 2.72      
6 A' 1768 1700 17.56      
7 A' 1540 1481 0.31      
8 A' 1517 1459 0.40      
9 A' 1483 1427 0.88      
10 A' 1289 1240 0.18      
11 A' 1243 1196 0.06      
12 A' 1121 1079 0.18      
13 A' 969 933 0.91      
14 A' 943 907 49.66      
15 A' 872 839 0.11      
16 A' 766 737 2.43      
17 A' 679 653 0.79      
18 A' 390 375 6.10      
19 A' 44 42 0.02      
20 A" 3236 3113 19.71      
21 A" 3104 2986 3.37      
22 A" 3054 2938 56.45      
23 A" 1508 1451 4.54      
24 A" 1310 1260 0.00      
25 A" 1273 1224 1.50      
26 A" 1248 1201 0.45      
27 A" 1217 1171 4.73      
28 A" 1069 1028 0.02      
29 A" 941 905 0.62      
30 A" 913 878 2.19      
31 A" 834 802 0.02      
32 A" 650 626 0.02      
33 A" 364 350 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 25445.0 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 24478.1 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/6-31G
ABC
0.34848 0.15078 0.11216

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.064 -0.433 1.106
C2 0.064 -0.433 -1.106
C3 0.000 0.626 0.000
C4 -0.010 -1.544 0.000
C5 -0.118 1.953 0.000
H6 -0.764 -0.420 1.825
H7 -0.764 -0.420 -1.825
H8 1.003 -0.431 1.672
H9 1.003 -0.431 -1.672
H10 -0.169 2.523 0.924
H11 -0.169 2.523 -0.924
H12 0.817 -2.259 0.000
H13 -0.952 -2.099 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C12.21231.53261.56932.63611.09573.04531.09682.93312.97103.59382.26372.2428
C22.21231.53261.56932.63613.04531.09572.93311.09683.59382.97102.26372.2428
C31.53261.53262.16961.33232.23722.23722.21792.21792.11722.11722.99812.8863
C41.56931.56932.16963.49832.27172.27172.24982.24984.17364.17361.09301.0935
C52.63612.63611.33233.49833.06173.06173.12023.12021.08701.08704.31434.1367
H61.09573.04532.23722.27173.06173.64911.77303.91793.13434.07033.03472.4870
H73.04531.09572.23722.27173.06173.64913.91791.77304.07033.13433.03472.4870
H81.09682.93312.21792.24983.12021.77303.91793.34493.26504.10382.48483.0662
H92.93311.09682.21792.24983.12023.91791.77303.34494.10383.26502.48483.0662
H102.97103.59382.11724.17361.08703.13434.07033.26504.10381.84794.96944.7782
H113.59382.97102.11724.17361.08704.07033.13434.10383.26501.84794.96944.7782
H122.26372.26372.99811.09304.31433.03473.03472.48482.48484.96944.96941.7757
H132.24282.24282.88631.09354.13672.48702.48703.06623.06624.77824.77821.7757

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 92.400 C1 C3 C5 133.777
C1 C4 C2 89.642 C1 C4 H12 115.326
C1 C4 H13 113.561 C2 C3 C5 133.777
C2 C4 H12 115.326 C2 C4 H13 113.561
C3 C1 C4 88.756 C3 C1 H6 115.684
C3 C1 H8 114.000 C3 C2 C4 88.756
C3 C2 H7 115.684 C3 C2 H9 114.000
C3 C5 H10 121.788 C3 C5 H11 121.788
C4 C1 H6 115.820 C4 C1 H8 113.924
C4 C2 H7 115.820 C4 C2 H9 113.924
H6 C1 H8 107.937 H7 C2 H9 107.937
H10 C5 H11 116.423 H12 C4 H13 108.608
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.271      
2 C -0.271      
3 C 0.095      
4 C -0.282      
5 C -0.360      
6 H 0.145      
7 H 0.145      
8 H 0.147      
9 H 0.147      
10 H 0.119      
11 H 0.119      
12 H 0.131      
13 H 0.136      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.033 -0.517 0.000 0.518
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.144 -0.192 0.000
y -0.192 -31.586 0.000
z 0.000 0.000 -30.445
Traceless
 xyz
x -1.129 -0.192 0.000
y -0.192 -0.292 0.000
z 0.000 0.000 1.421
Polar
3z2-r22.841
x2-y2-0.558
xy-0.192
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.596 0.000 -0.192
y 0.000 7.239 -0.000
z -0.192 -0.000 5.198


<r2> (average value of r2) Å2
<r2> 117.937
(<r2>)1/2 10.860