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

using model chemistry: B3LYP/3-21G*

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/3-21G*
 hartrees
Energy at 0K-194.230437
Energy at 298.15K-194.238753
Nuclear repulsion energy165.902048
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/3-21G*
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' 3164 3044 31.26      
2 A' 3146 3027 6.84      
3 A' 3119 3001 15.64      
4 A' 3105 2987 33.00      
5 A' 3077 2960 1.11      
6 A' 1759 1692 15.29      
7 A' 1543 1484 0.44      
8 A' 1517 1459 0.63      
9 A' 1496 1440 0.88      
10 A' 1273 1225 0.17      
11 A' 1252 1204 0.06      
12 A' 1097 1055 0.29      
13 A' 944 908 1.73      
14 A' 937 902 49.86      
15 A' 857 824 0.07      
16 A' 742 714 2.87      
17 A' 675 650 0.89      
18 A' 374 360 7.79      
19 A' 32 30 0.02      
20 A" 3221 3099 11.69      
21 A" 3124 3005 1.54      
22 A" 3072 2956 39.33      
23 A" 1508 1451 5.47      
24 A" 1292 1243 0.63      
25 A" 1264 1216 0.59      
26 A" 1254 1207 0.81      
27 A" 1202 1157 5.42      
28 A" 1088 1047 0.02      
29 A" 910 875 0.20      
30 A" 891 857 1.94      
31 A" 825 794 0.02      
32 A" 638 614 0.02      
33 A" 361 348 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25379.5 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 24415.0 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/3-21G*
ABC
0.34573 0.15028 0.11166

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.057 -0.433 1.114
C2 0.057 -0.433 -1.114
C3 0.000 0.632 0.000
C4 -0.012 -1.553 0.000
C5 -0.103 1.953 0.000
H6 -0.784 -0.418 1.813
H7 -0.784 -0.418 -1.813
H8 0.999 -0.429 1.671
H9 0.999 -0.429 -1.671
H10 -0.147 2.521 0.925
H11 -0.147 2.521 -0.925
H12 0.826 -2.251 0.000
H13 -0.956 -2.100 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C12.22851.54231.58162.63781.09353.04561.09452.94042.96683.59502.26732.2466
C22.22851.54231.58162.63783.04561.09352.94041.09453.59502.96682.26732.2466
C31.54231.54232.18531.32472.23702.23702.21732.21732.10822.10822.99942.8946
C41.58161.58162.18533.50712.27422.27422.25362.25364.17994.17991.09081.0912
C52.63782.63781.32473.50713.06123.06123.11113.11111.08631.08634.30554.1416
H61.09353.04562.23702.27423.06123.62591.78893.91393.13544.06663.04002.4791
H73.04561.09352.23702.27423.06123.62593.91391.78894.06663.13543.04002.4791
H81.09452.94042.21732.25363.11111.78893.91393.34233.25164.09322.47873.0673
H92.94041.09452.21732.25363.11113.91391.78893.34234.09323.25162.47873.0673
H102.96683.59502.10824.17991.08633.13544.06663.25164.09321.84954.95754.7814
H113.59502.96682.10824.17991.08634.06663.13544.09323.25161.84954.95754.7814
H122.26732.26732.99941.09084.30553.04003.04002.47872.47874.95754.95751.7889
H132.24662.24662.89461.09124.14162.47912.47913.06733.06734.78144.78141.7889

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 92.514 C1 C3 C5 133.727
C1 C4 C2 89.578 C1 C4 H12 114.835
C1 C4 H13 113.113 C2 C3 C5 133.727
C2 C4 H12 114.835 C2 C4 H13 113.113
C3 C1 C4 88.770 C3 C1 H6 115.077
C3 C1 H8 113.380 C3 C2 C4 88.770
C3 C2 H7 115.077 C3 C2 H9 113.380
C3 C5 H10 121.645 C3 C5 H11 121.645
C4 C1 H6 115.241 C4 C1 H8 113.476
C4 C2 H7 115.241 C4 C2 H9 113.476
H6 C1 H8 109.693 H7 C2 H9 109.693
H10 C5 H11 116.710 H12 C4 H13 110.133
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.377      
2 C -0.377      
3 C 0.043      
4 C -0.397      
5 C -0.457      
6 H 0.202      
7 H 0.202      
8 H 0.207      
9 H 0.207      
10 H 0.179      
11 H 0.179      
12 H 0.191      
13 H 0.197      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.025 -0.434 0.000 0.435
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.410 -0.219 0.000
y -0.219 -31.315 0.000
z 0.000 0.000 -30.386
Traceless
 xyz
x -1.559 -0.219 0.000
y -0.219 0.083 0.000
z 0.000 0.000 1.476
Polar
3z2-r22.952
x2-y2-1.094
xy-0.219
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.219 0.000 0.136
y 0.000 6.922 -0.001
z 0.136 -0.001 4.853


<r2> (average value of r2) Å2
<r2> 118.234
(<r2>)1/2 10.874