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

using model chemistry: CCD/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 CCD/6-31+G**
 hartrees
Energy at 0K-194.690982
Energy at 298.15K-194.700245
HF Energy-193.942214
Nuclear repulsion energy176.125593
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/6-31+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' 3283 3093 25.79      
2 A' 3265 3077 5.33      
3 A' 3194 3009 53.33      
4 A' 3180 2997 20.13      
5 A' 3127 2947 59.36      
6 A' 1562 1472 0.74      
7 A' 1543 1454 1.60      
8 A' 1416 1334 1.25      
9 A' 1298 1223 1.19      
10 A' 1246 1174 0.09      
11 A' 1161 1094 0.69      
12 A' 1062 1001 0.03      
13 A' 1010 951 4.05      
14 A' 975 919 6.47      
15 A' 936 882 0.11      
16 A' 809 762 0.33      
17 A' 806 760 10.87      
18 A' 424 399 0.37      
19 A" 3257 3069 21.87      
20 A" 3177 2993 0.34      
21 A" 3118 2938 50.10      
22 A" 1532 1443 0.08      
23 A" 1355 1277 5.38      
24 A" 1302 1227 1.23      
25 A" 1250 1178 0.00      
26 A" 1161 1094 0.04      
27 A" 1125 1060 3.11      
28 A" 1097 1034 0.64      
29 A" 1022 963 5.40      
30 A" 963 908 0.22      
31 A" 822 774 17.07      
32 A" 701 661 0.07      
33 A" 265 250 0.31      

Unscaled Zero Point Vibrational Energy (zpe) 26220.0 cm-1
Scaled (by 0.9423) Zero Point Vibrational Energy (zpe) 24707.1 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/6-31+G**
ABC
0.30539 0.20422 0.15997

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.247 -0.540 0.764
C2 -0.247 -0.540 -0.764
C3 -0.247 0.992 0.782
C4 -0.247 0.992 -0.782
C5 0.946 -1.039 0.000
H6 -0.794 -1.180 1.443
H7 -0.794 -1.180 -1.443
H8 0.606 1.461 1.277
H9 0.606 1.461 -1.277
H10 -1.165 1.415 1.190
H11 -1.165 1.415 -1.190
H12 1.869 -0.467 0.000
H13 1.085 -2.113 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52851.53192.17631.50251.08122.36222.23442.98252.20062.91212.25082.1985
C21.52852.17631.53191.50252.36221.08122.98252.23442.91212.20062.25082.1985
C31.53192.17631.56332.48222.33513.15661.09232.27701.08962.21532.68643.4679
C42.17631.53191.56332.48223.15662.33512.27701.09232.21531.08962.68643.4679
C51.50251.50252.48222.48222.26482.26482.82762.82763.44873.44871.08571.0826
H61.08122.36222.33513.15662.26482.88602.99314.04082.63293.71483.11112.5462
H72.36221.08123.15662.33512.26482.88604.04082.99313.71482.63293.11112.5462
H82.23442.98251.09232.27702.82762.99314.04082.55351.77383.03702.63423.8248
H92.98252.23442.27701.09232.82764.04082.99312.55353.03701.77382.63423.8248
H102.20062.91211.08962.21533.44872.63293.71481.77383.03702.37983.76274.3498
H112.91212.20062.21531.08963.44873.71482.63293.03701.77382.37983.76274.3498
H122.25082.25082.68642.68641.08573.11113.11112.63422.63423.76273.76271.8230
H132.19852.19853.46793.46791.08262.54622.54623.82483.82484.34984.34981.8230

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 90.651 C1 C2 C5 59.427
C1 C2 H7 128.885 C1 C3 C4 89.349
C1 C3 H8 115.726 C1 C3 H10 113.080
C1 C5 C2 61.146 C1 C5 H12 119.972
C1 C5 H13 115.569 C2 C1 C3 90.651
C2 C1 C5 59.427 C2 C1 H6 128.885
C2 C4 C3 89.349 C2 C4 H9 115.726
C2 C4 H11 113.080 C2 C5 H12 119.972
C2 C5 H13 115.569 C3 C1 C5 109.770
C3 C1 H6 125.782 C3 C4 H9 116.954
C3 C4 H11 112.006 C4 C2 C5 109.770
C4 C2 H7 125.782 C4 C3 H8 116.954
C4 C3 H10 112.006 C5 C1 H6 121.603
C5 C2 H7 121.603 H8 C3 H10 108.774
H9 C4 H11 108.774 H12 C5 H13 114.448
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability