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 (Spiropentane)

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at B3LYP/6-31G**
 hartrees
Energy at 0K-195.283439
Energy at 298.15K-195.292050
Nuclear repulsion energy170.089864
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/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3127 3005 0.00      
2 A1 1509 1450 0.00      
3 A1 1091 1048 0.00      
4 A1 1060 1018 0.00      
5 A1 607 583 0.00      
6 A2 3201 3076 0.00      
7 A2 1176 1130 0.00      
8 A2 838 805 0.00      
9 B1 3200 3075 0.00      
10 B1 1187 1141 0.00      
11 B1 1028 987 0.00      
12 B1 292 281 0.00      
13 B2 3126 3004 40.07      
14 B2 1588 1526 1.34      
15 B2 1443 1387 0.29      
16 B2 1023 983 7.94      
17 B2 908 873 16.74      
18 E 3213 3087 26.72      
18 E 3213 3087 26.72      
19 E 3124 3001 26.12      
19 E 3124 3001 26.12      
20 E 1478 1420 0.25      
20 E 1478 1420 0.25      
21 E 1187 1140 2.40      
21 E 1187 1140 2.40      
22 E 1081 1039 1.51      
22 E 1081 1039 1.51      
23 E 892 857 4.58      
23 E 892 857 4.58      
24 E 790 759 0.32      
24 E 790 759 0.32      
25 E 306 294 0.24      
25 E 306 294 0.24      

Unscaled Zero Point Vibrational Energy (zpe) 25274.3 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 24283.6 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/6-31G**
ABC
0.35265 0.13855 0.13855

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

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.000 0.765 1.273
C3 0.000 -0.765 1.273
C4 -0.765 0.000 -1.273
C5 0.765 0.000 -1.273
H6 0.913 1.270 1.577
H7 -0.913 1.270 1.577
H8 -0.913 -1.270 1.577
H9 0.913 -1.270 1.577
H10 -1.270 -0.913 -1.577
H11 -1.270 0.913 -1.577
H12 1.270 0.913 -1.577
H13 1.270 -0.913 -1.577

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.48461.48461.48461.48462.22112.22112.22112.22112.22112.22112.22112.2211
C21.48461.52942.76532.76531.08731.08732.25112.25113.54223.12303.12303.5422
C31.48461.52942.76532.76532.25112.25111.08731.08733.12303.54223.54223.1230
C41.48462.76532.76531.52943.54223.12303.12303.54221.08731.08732.25112.2511
C51.48462.76532.76531.52943.12303.54223.54223.12302.25112.25111.08731.0873
H62.22111.08732.25113.54223.12301.82673.12892.54044.41353.85213.19343.8521
H72.22111.08732.25113.12303.54221.82672.54043.12893.85213.19343.85214.4135
H82.22112.25111.08733.12303.54223.12892.54041.82673.19343.85214.41353.8521
H92.22112.25111.08733.54223.12302.54043.12891.82673.85214.41353.85213.1934
H102.22113.54223.12301.08732.25114.41353.85213.19343.85211.82673.12892.5404
H112.22113.12303.54221.08732.25113.85213.19343.85214.41351.82672.54043.1289
H122.22113.12303.54222.25111.08733.19343.85214.41353.85213.12892.54041.8267
H132.22113.54223.12302.25111.08733.85214.41353.85213.19342.54043.12891.8267

picture of Spiropentane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 58.997 C1 C2 H6 118.633
C1 C2 H7 118.633 C1 C3 C2 58.997
C1 C3 H8 118.633 C1 C3 H9 118.633
C1 C4 C5 58.997 C1 C4 H10 118.633
C1 C4 H11 118.633 C1 C5 C4 58.997
C1 C5 H12 118.633 C1 C5 H13 118.633
C2 C1 C3 62.005 C2 C1 C4 137.281
C2 C1 C5 137.281 C2 C3 H8 117.704
C2 C3 H9 117.704 C3 C1 C4 137.281
C3 C1 C5 137.281 C3 C2 H6 117.704
C3 C2 H7 117.704 C4 C1 C5 62.005
C4 C5 H12 117.704 C4 C5 H13 117.704
C5 C4 H10 117.704 C5 C4 H11 117.704
H6 C2 H7 114.284 H8 C3 H9 114.284
H10 C4 H11 114.284 H12 C5 H13 114.284
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.062      
2 C -0.232      
3 C -0.232      
4 C -0.232      
5 C -0.232      
6 H 0.108      
7 H 0.108      
8 H 0.108      
9 H 0.108      
10 H 0.108      
11 H 0.108      
12 H 0.108      
13 H 0.108      


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


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.395 0.000 0.000
y 0.000 -30.395 0.000
z 0.000 0.000 -32.197
Traceless
 xyz
x 0.901 0.000 0.000
y 0.000 0.901 0.000
z 0.000 0.000 -1.802
Polar
3z2-r2-3.604
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.978 0.000 0.000
y 0.000 6.978 0.000
z 0.000 0.000 8.038


<r2> (average value of r2) Å2
<r2> 111.726
(<r2>)1/2 10.570