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

using model chemistry: B3LYP/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-195.314525
Energy at 298.15K-195.322952
Nuclear repulsion energy167.088275
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/6-31+G**
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' 3142 3030 8.66      
2 A' 3127 3015 45.10      
3 A' 3091 2980 17.20      
4 A' 3071 2961 46.95      
5 A' 3044 2935 11.03      
6 A' 1744 1682 30.66      
7 A' 1505 1451 0.05      
8 A' 1476 1424 1.79      
9 A' 1442 1391 0.57      
10 A' 1263 1217 0.12      
11 A' 1220 1176 0.41      
12 A' 1095 1056 0.86      
13 A' 968 933 0.69      
14 A' 900 867 52.65      
15 A' 884 852 0.71      
16 A' 748 721 1.94      
17 A' 665 641 1.83      
18 A' 383 370 8.46      
19 A' 96 93 0.03      
20 A" 3224 3109 14.65      
21 A" 3095 2984 18.85      
22 A" 3040 2931 51.42      
23 A" 1464 1412 4.29      
24 A" 1284 1238 0.05      
25 A" 1241 1197 0.07      
26 A" 1222 1179 0.98      
27 A" 1190 1148 2.17      
28 A" 1041 1004 0.14      
29 A" 925 892 0.92      
30 A" 908 875 1.62      
31 A" 808 780 0.07      
32 A" 638 615 0.08      
33 A" 355 342 0.03      

Unscaled Zero Point Vibrational Energy (zpe) 25149.5 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 24249.2 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 B3LYP/6-31+G**
ABC
0.34705 0.15270 0.11467

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.166 -0.424 1.095
C2 0.166 -0.424 -1.095
C3 0.000 0.623 0.000
C4 -0.017 -1.522 0.000
C5 -0.316 1.917 0.000
H6 -0.557 -0.403 1.917
H7 -0.557 -0.403 -1.917
H8 1.175 -0.427 1.524
H9 1.175 -0.427 -1.524
H10 -0.451 2.467 0.928
H11 -0.451 2.467 -0.928
H12 0.705 -2.343 0.000
H13 -1.028 -1.941 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C12.18981.52401.56132.62901.09503.09771.09722.80682.96143.58232.27362.2187
C22.18981.52401.56132.62903.09771.09502.80681.09723.58232.96142.27362.2187
C31.52401.52402.14511.33212.24462.24462.19212.19212.11352.11353.04802.7620
C41.56131.56132.14513.45202.28472.28472.22382.22384.11904.11901.09321.0937
C52.62902.62901.33213.45203.01923.01923.16833.16831.08721.08724.38003.9229
H61.09503.09772.24462.28473.01923.83441.77693.85283.03794.04273.00532.5025
H73.09771.09502.24462.28473.01923.83443.85281.77694.04273.03793.00532.5025
H81.09722.80682.19212.22383.16831.77693.85283.04783.37294.12692.49273.0772
H92.80681.09722.19212.22383.16833.85281.77693.04784.12693.37292.49273.0772
H102.96143.58232.11354.11901.08723.03794.04273.37294.12691.85545.03314.5416
H113.58232.96142.11354.11901.08724.04273.03794.12693.37291.85545.03314.5416
H122.27362.27363.04801.09324.38003.00533.00532.49272.49275.03315.03311.7790
H132.21872.21872.76201.09373.92292.50252.50253.07723.07724.54164.54161.7790

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 91.851 C1 C3 C5 133.887
C1 C4 C2 89.057 C1 C4 H12 116.753
C1 C4 H13 112.173 C2 C3 C5 133.887
C2 C4 H12 116.753 C2 C4 H13 112.173
C3 C1 C4 88.087 C3 C1 H6 117.023
C3 C1 H8 112.482 C3 C2 C4 88.087
C3 C2 H7 117.023 C3 C2 H9 112.482
C3 C5 H10 121.429 C3 C5 H11 121.429
C4 C1 H6 117.583 C4 C1 H8 112.364
C4 C2 H7 117.583 C4 C2 H9 112.364
H6 C1 H8 108.298 H7 C2 H9 108.298
H10 C5 H11 117.141 H12 C4 H13 108.880
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.510     -0.011
2 C -0.510     -0.011
3 C 0.257     0.204
4 C -0.197     -0.122
5 C -0.193     -0.703
6 H 0.150     0.026
7 H 0.150     0.026
8 H 0.157     0.027
9 H 0.157     0.027
10 H 0.129     0.228
11 H 0.129     0.228
12 H 0.134     0.037
13 H 0.149     0.046


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.107 -0.614 0.000 0.623
CHELPG        
AIM        
ESP 0.128 -0.584 0.000 0.598


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.906 -0.566 0.000
y -0.566 -32.565 0.000
z 0.000 0.000 -31.160
Traceless
 xyz
x -1.043 -0.566 0.000
y -0.566 -0.532 0.000
z 0.000 0.000 1.575
Polar
3z2-r23.150
x2-y2-0.340
xy-0.566
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.969 0.002 -0.260
y 0.002 8.203 0.001
z -0.260 0.001 6.754


<r2> (average value of r2) Å2
<r2> 117.050
(<r2>)1/2 10.819