return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B97D3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B97D3/6-31G*
 hartrees
Energy at 0K-195.162249
Energy at 298.15K-195.170575
HF Energy-195.162249
Nuclear repulsion energy 
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 B97D3/6-31G*
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' 3092 3031 13.70      
2 A' 3083 3023 54.54      
3 A' 3042 2982 28.48      
4 A' 3025 2966 50.29      
5 A' 2992 2934 15.90      
6 A' 1724 1690 17.44      
7 A' 1498 1468 0.18      
8 A' 1473 1444 1.16      
9 A' 1434 1406 0.30      
10 A' 1247 1222 0.76      
11 A' 1208 1185 0.13      
12 A' 1081 1060 0.11      
13 A' 955 936 0.29      
14 A' 875 858 0.48      
15 A' 859 842 39.76      
16 A' 740 726 1.98      
17 A' 660 647 1.36      
18 A' 369 362 4.62      
19 A' 95 93 0.03      
20 A" 3169 3107 20.09      
21 A" 3045 2985 22.43      
22 A" 2988 2929 59.43      
23 A" 1460 1431 1.19      
24 A" 1266 1241 0.25      
25 A" 1228 1204 0.00      
26 A" 1205 1181 1.04      
27 A" 1171 1148 2.01      
28 A" 1033 1013 0.13      
29 A" 912 895 0.65      
30 A" 898 881 1.08      
31 A" 801 785 0.10      
32 A" 631 619 0.11      
33 A" 346 339 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 24802.2 cm-1
Scaled (by 0.9804) Zero Point Vibrational Energy (zpe) 24316.1 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 B97D3/6-31G*
ABC
0.34471 0.15232 0.11458

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.250 -0.385 1.095
C2 0.250 -0.385 -1.095
C3 -0.105 0.616 0.000
C4 0.250 -1.501 0.000
C5 -0.675 1.823 0.000
H6 -0.457 -0.489 1.931
H7 -0.457 -0.489 -1.931
H8 1.255 -0.215 1.514
H9 1.255 -0.215 -1.514
H10 -0.919 2.340 0.931
H11 -0.919 2.340 -0.931
H12 1.100 -2.196 0.000
H13 -0.684 -2.077 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C12.19071.52571.56342.63311.09983.10961.10212.80152.96993.59142.28062.2214
C22.19071.52571.56342.63313.10961.09982.80151.10213.59142.96992.28062.2214
C31.52571.52572.14601.33542.25212.25212.19832.19832.12182.12183.05902.7542
C41.56341.56342.14603.45042.29202.29202.22612.22614.12114.12111.09781.0978
C52.63312.63311.33543.45043.01993.01993.18963.18961.09211.09214.39383.9001
H61.09983.10962.25212.29203.01993.86161.78393.85693.03524.04983.01142.5104
H73.10961.09982.25212.29203.01993.86163.85691.78394.04983.03523.01142.5104
H81.10212.80152.19832.22613.18961.78393.85693.02813.40544.15132.49833.0856
H92.80151.10212.19832.22613.18963.85691.78393.02814.15133.40542.49833.0856
H102.96993.59142.12184.12111.09213.03524.04983.40544.15131.86145.05144.5197
H113.59142.96992.12184.12111.09214.04983.03524.15133.40541.86145.05144.5197
H122.28062.28063.05901.09784.39383.01143.01142.49832.49835.05145.05141.7880
H132.22142.22142.75421.09783.90012.51042.51043.08563.08564.51974.51971.7880

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 91.716 C1 C3 C5 133.981
C1 C4 C2 89.103 C1 C4 H12 116.731
C1 C4 H13 112.201 C2 C3 C5 133.981
C2 C4 H12 116.731 C2 C4 H13 112.201
C3 C1 C4 88.263 C3 C1 H6 116.909
C3 C1 H8 112.593 C3 C2 C4 88.263
C3 C2 H7 116.909 C3 C2 H9 112.593
C3 C5 H10 121.640 C3 C5 H11 121.640
C4 C1 H6 117.378 C4 C1 H8 112.451
C4 C2 H7 117.378 C4 C2 H9 112.451
H6 C1 H8 108.280 H7 C2 H9 108.280
H10 C5 H11 116.720 H12 C4 H13 108.840
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.332      
2 C -0.332      
3 C 0.215      
4 C -0.294      
5 C -0.444      
6 H 0.153      
7 H 0.153      
8 H 0.156      
9 H 0.156      
10 H 0.138      
11 H 0.138      
12 H 0.141      
13 H 0.152      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.175 -0.506 0.000 0.535
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.459 -0.516 0.000
y -0.516 -31.734 0.000
z 0.000 0.000 -30.275
Traceless
 xyz
x -0.455 -0.516 0.000
y -0.516 -0.867 0.000
z 0.000 0.000 1.321
Polar
3z2-r22.643
x2-y20.274
xy-0.516
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.157 -1.675 0.000
y -1.675 9.232 0.000
z 0.000 0.000 7.497


<r2> (average value of r2) Å2
<r2> 116.665
(<r2>)1/2 10.801