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

using model chemistry: B1B95/6-31+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 B1B95/6-31+G**
 hartrees
Energy at 0K-195.202247
Energy at 298.15K-195.210734
Nuclear repulsion energy168.137000
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 B1B95/6-31+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' 3164 3026 7.41      
2 A' 3154 3017 39.88      
3 A' 3123 2987 12.06      
4 A' 3092 2958 45.43      
5 A' 3065 2932 12.26      
6 A' 1770 1693 32.97      
7 A' 1500 1435 0.07      
8 A' 1470 1406 2.92      
9 A' 1437 1374 0.84      
10 A' 1261 1207 0.10      
11 A' 1221 1168 0.37      
12 A' 1090 1043 0.61      
13 A' 990 947 0.63      
14 A' 902 863 33.23      
15 A' 899 860 21.21      
16 A' 756 723 2.39      
17 A' 660 631 2.42      
18 A' 386 369 8.03      
19 A' 118 113 0.08      
20 A" 3251 3110 12.80      
21 A" 3126 2991 22.55      
22 A" 3062 2929 42.18      
23 A" 1457 1394 5.09      
24 A" 1291 1235 0.03      
25 A" 1242 1188 0.40      
26 A" 1219 1167 1.15      
27 A" 1193 1141 2.31      
28 A" 1040 995 0.20      
29 A" 949 907 1.41      
30 A" 916 876 1.00      
31 A" 809 774 0.14      
32 A" 642 614 0.15      
33 A" 356 341 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 25305.0 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 24206.8 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 B1B95/6-31+G**
ABC
0.34870 0.15491 0.11701

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.283 -0.369 1.084
C2 0.283 -0.369 -1.084
C3 -0.126 0.605 0.000
C4 0.283 -1.476 0.000
C5 -0.759 1.773 0.000
H6 -0.386 -0.485 1.941
H7 -0.386 -0.485 -1.941
H8 1.293 -0.165 1.455
H9 1.293 -0.165 -1.455
H10 -1.030 2.268 0.927
H11 -1.030 2.268 -0.927
H12 1.119 -2.177 0.000
H13 -0.653 -2.038 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C12.16801.51361.54872.61701.09273.09981.09552.74062.95043.56722.26762.1988
C22.16801.51361.54872.61703.09981.09272.74061.09553.56722.95042.26762.1988
C31.51361.51362.12001.32862.24092.24092.17322.17322.10822.10823.04762.6948
C41.54871.54872.12003.41122.27902.27902.20372.20374.07414.07411.09151.0919
C52.61702.61701.32863.41123.00053.00053.17533.17531.08561.08564.37353.8120
H61.09273.09982.24092.27903.00053.88131.77643.80183.00394.02742.98212.4998
H73.09981.09272.24092.27903.00053.88133.80181.77644.02743.00392.98212.4998
H81.09552.74062.17322.20373.17531.77643.80182.91093.40504.12202.48963.0682
H92.74061.09552.17322.20373.17533.80181.77642.91094.12203.40502.48963.0682
H102.95043.56722.10824.07411.08563.00394.02743.40504.12201.85415.02384.4209
H113.56722.95042.10824.07411.08564.02743.00394.12203.40501.85415.02384.4209
H122.26762.26763.04761.09154.37352.98212.98212.48962.48965.02385.02381.7775
H132.19882.19882.69481.09193.81202.49982.49983.06823.06824.42094.42091.7775

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 91.481 C1 C3 C5 133.981
C1 C4 C2 88.845 C1 C4 H12 117.333
C1 C4 H13 111.578 C2 C3 C5 133.981
C2 C4 H12 117.333 C2 C4 H13 111.578
C3 C1 C4 87.616 C3 C1 H6 117.681
C3 C1 H8 111.802 C3 C2 C4 87.616
C3 C2 H7 117.681 C3 C2 H9 111.802
C3 C5 H10 121.350 C3 C5 H11 121.350
C4 C1 H6 118.240 C4 C1 H8 111.755
C4 C2 H7 118.240 C4 C2 H9 111.755
H6 C1 H8 108.542 H7 C2 H9 108.542
H10 C5 H11 117.299 H12 C4 H13 108.997
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.522      
2 C -0.522      
3 C 0.214      
4 C -0.226      
5 C -0.215      
6 H 0.163      
7 H 0.163      
8 H 0.174      
9 H 0.174      
10 H 0.141      
11 H 0.141      
12 H 0.148      
13 H 0.166      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.252 -0.575 0.000 0.627
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.195 -0.692 0.000
y -0.692 -32.481 0.000
z 0.000 0.000 -30.723
Traceless
 xyz
x -0.592 -0.692 0.000
y -0.692 -1.022 0.000
z 0.000 0.000 1.615
Polar
3z2-r23.229
x2-y20.287
xy-0.692
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.474 -1.612 0.000
y -1.612 10.091 0.000
z 0.000 0.000 8.094


<r2> (average value of r2) Å2
<r2> 115.337
(<r2>)1/2 10.740