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/SDD

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/SDD
 hartrees
Energy at 0K-195.231313
Energy at 298.15K-195.239905
Nuclear repulsion energy168.334984
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/SDD
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 3148 3026 0.00      
2 A1 1506 1448 0.00      
3 A1 1088 1046 0.00      
4 A1 1050 1009 0.00      
5 A1 584 562 0.00      
6 A2 3233 3108 0.00      
7 A2 1169 1123 0.00      
8 A2 846 813 0.00      
9 B1 3233 3108 0.00      
10 B1 1179 1133 0.00      
11 B1 1021 981 0.00      
12 B1 292 281 0.00      
13 B2 3148 3027 44.95      
14 B2 1583 1522 0.02      
15 B2 1454 1398 0.96      
16 B2 1042 1002 36.17      
17 B2 877 843 24.83      
18 E 3251 3125 39.09      
18 E 3251 3125 39.09      
19 E 3139 3017 33.14      
19 E 3139 3017 33.14      
20 E 1481 1424 4.80      
20 E 1481 1424 4.80      
21 E 1188 1142 7.62      
21 E 1188 1142 7.62      
22 E 1108 1065 3.87      
22 E 1108 1065 3.87      
23 E 874 840 6.36      
23 E 874 840 6.36      
24 E 793 762 3.21      
24 E 793 762 3.21      
25 E 312 300 0.72      
25 E 312 300 0.72      

Unscaled Zero Point Vibrational Energy (zpe) 25371.3 cm-1
Scaled (by 0.9613) Zero Point Vibrational Energy (zpe) 24389.5 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 B3LYP/SDD
ABC
0.34375 0.13560 0.13560

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/SDD

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.000 0.778 1.286
C3 0.000 -0.778 1.286
C4 -0.778 0.000 -1.286
C5 0.778 0.000 -1.286
H6 0.914 1.282 1.592
H7 -0.914 1.282 1.592
H8 -0.914 -1.282 1.592
H9 0.914 -1.282 1.592
H10 -1.282 -0.914 -1.592
H11 -1.282 0.914 -1.592
H12 1.282 0.914 -1.592
H13 1.282 -0.914 -1.592

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.50301.50301.50301.50302.23882.23882.23882.23882.23882.23882.23882.2388
C21.50301.55602.79732.79731.08751.08752.27432.27433.57593.15333.15333.5759
C31.50301.55602.79732.79732.27432.27431.08751.08753.15333.57593.57593.1533
C41.50302.79732.79731.55603.57593.15333.15333.57591.08751.08752.27432.2743
C51.50302.79732.79731.55603.15333.57593.57593.15332.27432.27431.08751.0875
H62.23881.08752.27433.57593.15331.82753.14882.56414.44733.88493.22593.8849
H72.23881.08752.27433.15333.57591.82752.56413.14883.88493.22593.88494.4473
H82.23882.27431.08753.15333.57593.14882.56411.82753.22593.88494.44733.8849
H92.23882.27431.08753.57593.15332.56413.14881.82753.88494.44733.88493.2259
H102.23883.57593.15331.08752.27434.44733.88493.22593.88491.82753.14882.5641
H112.23883.15333.57591.08752.27433.88493.22593.88494.44731.82752.56413.1488
H122.23883.15333.57592.27431.08753.22593.88494.44733.88493.14882.56411.8275
H132.23883.57593.15332.27431.08753.88494.44733.88493.22592.56413.14881.8275

picture of Spiropentane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 58.825 C1 C2 H6 118.722
C1 C2 H7 118.722 C1 C3 C2 58.825
C1 C3 H8 118.722 C1 C3 H9 118.722
C1 C4 C5 58.825 C1 C4 H10 118.722
C1 C4 H11 118.722 C1 C5 C4 58.825
C1 C5 H12 118.722 C1 C5 H13 118.722
C2 C1 C3 62.351 C2 C1 C4 137.057
C2 C1 C5 137.057 C2 C3 H8 117.613
C2 C3 H9 117.613 C3 C1 C4 137.057
C3 C1 C5 137.057 C3 C2 H6 117.613
C3 C2 H7 117.613 C4 C1 C5 62.351
C4 C5 H12 117.613 C4 C5 H13 117.613
C5 C4 H10 117.613 C5 C4 H11 117.613
H6 C2 H7 114.339 H8 C3 H9 114.339
H10 C4 H11 114.339 H12 C5 H13 114.339
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.182      
2 C -0.473      
3 C -0.473      
4 C -0.473      
5 C -0.473      
6 H 0.214      
7 H 0.214      
8 H 0.214      
9 H 0.214      
10 H 0.214      
11 H 0.214      
12 H 0.214      
13 H 0.214      


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 -30.247 0.000 0.000
y 0.000 -30.247 0.000
z 0.000 0.000 -32.776
Traceless
 xyz
x 1.264 0.000 0.000
y 0.000 1.264 0.000
z 0.000 0.000 -2.529
Polar
3z2-r2-5.057
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 6.824 0.000 0.000
y 0.000 6.824 0.000
z 0.000 0.000 8.171


<r2> (average value of r2) Å2
<r2> 113.731
(<r2>)1/2 10.664