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

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-193.310242
Energy at 298.15K-193.318621
HF Energy-192.861808
Nuclear repulsion energy165.217885
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 MP2/3-21G
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' 3197 3052 32.57      
2 A' 3164 3020 6.93      
3 A' 3162 3018 9.94      
4 A' 3131 2989 28.71      
5 A' 3111 2969 1.74      
6 A' 1736 1657 6.31      
7 A' 1583 1511 0.09      
8 A' 1561 1490 0.72      
9 A' 1522 1453 0.25      
10 A' 1295 1236 0.34      
11 A' 1262 1204 0.04      
12 A' 1118 1067 0.05      
13 A' 937 894 20.76      
14 A' 935 892 25.99      
15 A' 857 818 0.04      
16 A' 757 723 2.28      
17 A' 673 643 0.52      
18 A' 367 350 7.17      
19 A' 38 37 0.01      
20 A" 3245 3097 10.85      
21 A" 3168 3024 1.28      
22 A" 3108 2967 34.30      
23 A" 1557 1486 3.24      
24 A" 1305 1245 0.27      
25 A" 1286 1227 0.51      
26 A" 1271 1213 0.54      
27 A" 1218 1162 4.51      
28 A" 1104 1054 0.02      
29 A" 908 866 0.05      
30 A" 890 850 1.71      
31 A" 849 810 0.01      
32 A" 660 630 0.02      
33 A" 367 350 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 25670.5 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 24502.5 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 MP2/3-21G
ABC
0.34059 0.14945 0.11077

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.063 -0.434 1.125
C2 0.063 -0.434 -1.125
C3 0.000 0.631 0.000
C4 -0.031 -1.555 0.000
C5 -0.097 1.961 0.000
H6 -0.768 -0.416 1.835
H7 -0.768 -0.416 -1.835
H8 1.015 -0.442 1.664
H9 1.015 -0.442 -1.664
H10 -0.141 2.530 0.925
H11 -0.141 2.530 -0.925
H12 0.787 -2.278 0.000
H13 -0.991 -2.075 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C12.24901.55011.59062.65051.09363.07411.09452.94702.97843.60992.27792.2518
C22.24901.55011.59062.65053.07411.09362.94701.09453.60992.97842.27792.2518
C31.55011.55012.18621.33332.24772.24772.22522.22522.11762.11763.01372.8821
C41.59061.59062.18623.51632.28212.28212.25952.25954.19054.19051.09181.0921
C52.65052.65051.33333.51633.07643.07643.12713.12711.08731.08734.33014.1339
H61.09363.07412.24772.28213.07643.67021.79143.92773.14664.08543.04192.4844
H73.07411.09362.24772.28213.07643.67023.92771.79144.08543.14663.04192.4844
H81.09452.94702.22522.25953.12711.79143.92773.32893.27394.10812.48923.0767
H92.94701.09452.22522.25953.12713.92771.79143.32894.10813.27392.48923.0767
H102.97843.60992.11764.19051.08733.14664.08543.27394.10811.84994.98424.7742
H113.60992.97842.11764.19051.08734.08543.14664.10813.27391.84994.98424.7742
H122.27792.27793.01371.09184.33013.04193.04192.48922.48924.98424.98421.7896
H132.25182.25182.88211.09214.13392.48442.48443.07673.07674.77424.77421.7896

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 93.014 C1 C3 C5 133.488
C1 C4 C2 89.978 C1 C4 H12 114.981
C1 C4 H13 112.830 C2 C3 C5 133.488
C2 C4 H12 114.981 C2 C4 H13 112.830
C3 C1 C4 88.217 C3 C1 H6 115.388
C3 C1 H8 113.465 C3 C2 C4 88.217
C3 C2 H7 115.388 C3 C2 H9 113.465
C3 C5 H10 121.716 C3 C5 H11 121.716
C4 C1 H6 115.219 C4 C1 H8 113.303
C4 C2 H7 115.219 C4 C2 H9 113.303
H6 C1 H8 109.913 H7 C2 H9 109.913
H10 C5 H11 116.568 H12 C4 H13 110.063
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.379     -0.040
2 C -0.379     -0.040
3 C 0.027     0.147
4 C -0.386     -0.200
5 C -0.430     -0.596
6 H 0.199     0.042
7 H 0.199     0.042
8 H 0.204     0.044
9 H 0.204     0.044
10 H 0.179     0.206
11 H 0.179     0.206
12 H 0.188     0.071
13 H 0.195     0.072


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.021 -0.325 0.000 0.325
CHELPG        
AIM        
ESP 0.049 -0.335 0.000 0.338


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.203 -0.230 0.000
y -0.230 -32.005 0.000
z 0.000 0.000 -31.413
Traceless
 xyz
x -1.495 -0.230 0.000
y -0.230 0.303 0.000
z 0.000 0.000 1.191
Polar
3z2-r22.383
x2-y2-1.199
xy-0.230
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.686 0.000 0.180
y 0.000 6.821 0.000
z 0.180 0.000 4.821


<r2> (average value of r2) Å2
<r2> 119.417
(<r2>)1/2 10.928