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 (Bicyclo[2.1.0]pentane)

using model chemistry: B3LYPultrafine/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYPultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-195.352212
Energy at 298.15K-195.361389
HF Energy-195.352212
Nuclear repulsion energy176.174424
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 B3LYPultrafine/aug-cc-pVTZ
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' 3185 3081 26.47      
2 A' 3168 3065 6.17      
3 A' 3100 3000 49.19      
4 A' 3088 2987 25.03      
5 A' 3038 2939 69.35      
6 A' 1510 1461 1.19      
7 A' 1488 1439 2.32      
8 A' 1363 1319 1.08      
9 A' 1240 1200 1.66      
10 A' 1214 1175 0.03      
11 A' 1130 1093 0.70      
12 A' 1028 995 0.05      
13 A' 979 948 3.58      
14 A' 935 905 6.56      
15 A' 900 871 0.64      
16 A' 784 759 1.16      
17 A' 768 743 7.73      
18 A' 417 404 0.41      
19 A" 3161 3058 24.79      
20 A" 3082 2982 1.95      
21 A" 3029 2931 51.82      
22 A" 1485 1437 0.58      
23 A" 1304 1261 6.30      
24 A" 1268 1227 0.93      
25 A" 1226 1186 0.01      
26 A" 1127 1090 0.05      
27 A" 1082 1047 2.33      
28 A" 1058 1024 1.73      
29 A" 989 957 4.33      
30 A" 935 905 0.03      
31 A" 791 765 14.47      
32 A" 687 665 0.03      
33 A" 271 262 0.36      

Unscaled Zero Point Vibrational Energy (zpe) 25414.6 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 24588.6 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 B3LYPultrafine/aug-cc-pVTZ
ABC
0.30646 0.20406 0.15954

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.245 -0.537 0.763
C2 -0.245 -0.537 -0.763
C3 -0.245 0.995 0.782
C4 -0.245 0.995 -0.782
C5 0.939 -1.050 0.000
H6 -0.796 -1.171 1.443
H7 -0.796 -1.171 -1.443
H8 0.607 1.464 1.278
H9 0.607 1.464 -1.278
H10 -1.161 1.418 1.189
H11 -1.161 1.418 -1.189
H12 1.871 -0.495 0.000
H13 1.063 -2.124 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52541.53172.17521.49841.08072.36002.23462.98202.20102.91082.24972.1938
C21.52542.17521.53171.49842.36001.08072.98202.23462.91082.20102.24972.1938
C31.53172.17521.56382.48822.33023.15311.09142.27771.08842.21452.70333.4714
C42.17521.53171.56382.48823.15312.33022.27771.09142.21451.08842.70333.4714
C51.49841.49842.48822.48822.25952.25952.83912.83913.45163.45161.08501.0819
H61.08072.36002.33023.15312.25952.88542.98934.03862.62703.71003.10692.5392
H72.36001.08073.15312.33022.25952.88544.03862.98933.71002.62703.10692.5392
H82.23462.98201.09142.27772.83912.98934.03862.55591.77043.03542.65873.8362
H92.98202.23462.27771.09142.83914.03862.98932.55593.03541.77042.65873.8362
H102.20102.91081.08842.21453.45162.62703.71001.77043.03542.37853.77744.3488
H112.91082.20102.21451.08843.45163.71002.62703.03541.77042.37853.77744.3488
H122.24972.24972.70332.70331.08503.10693.10692.65872.65873.77743.77741.8188
H132.19382.19383.47143.47141.08192.53922.53923.83623.83624.34884.34881.8188

picture of Bicyclo[2.1.0]pentane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 90.718 C1 C2 C5 59.402
C1 C2 H7 128.990 C1 C3 C4 89.282
C1 C3 H8 115.816 C1 C3 H10 113.202
C1 C5 C2 61.195 C1 C5 H12 120.258
C1 C5 H13 115.519 C2 C1 C3 90.718
C2 C1 C5 59.402 C2 C1 H6 128.990
C2 C4 C3 89.282 C2 C4 H9 115.816
C2 C4 H11 113.202 C2 C5 H12 120.258
C2 C5 H13 115.519 C3 C1 C5 110.396
C3 C1 H6 125.351 C3 C4 H9 117.032
C3 C4 H11 111.978 C4 C2 C5 110.396
C4 C2 H7 125.351 C4 C3 H8 117.032
C4 C3 H10 111.978 C5 C1 H6 121.495
C5 C2 H7 121.495 H8 C3 H10 108.615
H9 C4 H11 108.615 H12 C5 H13 114.136
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.272      
2 C -0.272      
3 C -0.389      
4 C -0.389      
5 C -0.730      
6 H 0.445      
7 H 0.445      
8 H 0.184      
9 H 0.184      
10 H 0.178      
11 H 0.178      
12 H 0.216      
13 H 0.222      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.254 -0.076 0.000 0.265
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.743 0.151 0.000
y 0.151 -31.386 0.000
z 0.000 0.000 -32.823
Traceless
 xyz
x 0.362 0.151 0.000
y 0.151 0.897 0.000
z 0.000 0.000 -1.259
Polar
3z2-r2-2.517
x2-y2-0.357
xy0.151
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.962 -0.434 0.000
y -0.434 8.825 0.000
z 0.000 0.000 8.414


<r2> (average value of r2) Å2
<r2> 98.361
(<r2>)1/2 9.918