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All results from a given calculation for C5H8 (Bicyclo[2.1.0]pentane)

using model chemistry: CCD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCD/6-31G*
 hartrees
Energy at 0K-194.617582
Energy at 298.15K-194.626842
HF Energy-193.925982
Nuclear repulsion energy175.941598
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 CCD/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 A' 3241 3067 23.33      
2 A' 3224 3052 6.02      
3 A' 3157 2988 48.01      
4 A' 3146 2978 15.82      
5 A' 3094 2929 47.57      
6 A' 1564 1481 0.88      
7 A' 1543 1460 2.40      
8 A' 1421 1345 0.38      
9 A' 1297 1227 1.32      
10 A' 1249 1182 0.22      
11 A' 1167 1105 0.43      
12 A' 1068 1011 0.02      
13 A' 1013 959 2.91      
14 A' 984 931 7.60      
15 A' 942 891 0.14      
16 A' 814 771 2.26      
17 A' 812 769 6.22      
18 A' 427 404 0.58      
19 A" 3216 3044 19.65      
20 A" 3140 2972 0.18      
21 A" 3087 2921 41.83      
22 A" 1537 1455 0.16      
23 A" 1356 1284 4.82      
24 A" 1301 1232 1.34      
25 A" 1256 1188 0.01      
26 A" 1165 1103 0.01      
27 A" 1126 1066 3.65      
28 A" 1097 1039 0.35      
29 A" 1026 971 3.99      
30 A" 966 914 0.18      
31 A" 825 781 14.29      
32 A" 706 668 0.11      
33 A" 269 255 0.36      

Unscaled Zero Point Vibrational Energy (zpe) 26117.3 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 24720.1 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 CCD/6-31G*
ABC
0.30519 0.20378 0.15973

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.246 -0.539 0.762
C2 -0.246 -0.539 -0.762
C3 -0.246 0.993 0.782
C4 -0.246 0.993 -0.782
C5 0.945 -1.043 0.000
H6 -0.800 -1.179 1.446
H7 -0.800 -1.179 -1.446
H8 0.610 1.465 1.282
H9 0.610 1.465 -1.282
H10 -1.168 1.418 1.194
H11 -1.168 1.418 -1.194
H12 1.879 -0.477 0.000
H13 1.080 -2.123 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52391.53272.17561.50091.08802.36452.24042.98762.20632.91672.25832.2017
C21.52392.17561.53271.50092.36451.08802.98762.24042.91672.20632.25832.2017
C31.53272.17561.56462.48512.33813.16101.09792.28381.09542.22192.70013.4760
C42.17561.53271.56462.48513.16102.33812.28381.09792.22191.09542.70013.4760
C51.50091.50092.48512.48512.26992.26992.83572.83573.45633.45631.09171.0888
H61.08802.36452.33813.16102.26992.89213.00104.05202.63553.72193.12372.5522
H72.36451.08803.16102.33812.26992.89214.05203.00103.72192.63553.12372.5522
H82.24042.98761.09792.28382.83573.00104.05202.56321.78143.04882.65003.8386
H92.98762.24042.28381.09792.83574.05203.00102.56323.04881.78142.65003.8386
H102.20632.91671.09542.22193.45632.63553.72191.78143.04882.38833.78194.3611
H112.91672.20632.22191.09543.45633.72192.63553.04881.78142.38833.78194.3611
H122.25832.25832.70012.70011.09173.12373.12372.65002.65003.78193.78191.8295
H132.20172.20173.47603.47601.08882.55222.55223.83863.83864.36114.36111.8295

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 90.762 C1 C2 C5 59.492
C1 C2 H7 128.958 C1 C3 C4 89.238
C1 C3 H8 115.807 C1 C3 H10 113.126
C1 C5 C2 61.016 C1 C5 H12 120.344
C1 C5 H13 115.545 C2 C1 C3 90.762
C2 C1 C5 59.492 C2 C1 H6 128.958
C2 C4 C3 89.238 C2 C4 H9 115.807
C2 C4 H11 113.126 C2 C5 H12 120.344
C2 C5 H13 115.545 C3 C1 C5 110.009
C3 C1 H6 125.440 C3 C4 H9 117.049
C3 C4 H11 112.083 C4 C2 C5 110.009
C4 C2 H7 125.440 C4 C3 H8 117.049
C4 C3 H10 112.083 C5 C1 H6 121.697
C5 C2 H7 121.697 H8 C3 H10 108.618
H9 C4 H11 108.618 H12 C5 H13 114.066
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability