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

using model chemistry: CISD/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 CISD/6-31G**
 hartrees
Energy at 0K-194.566062
Energy at 298.15K-194.575455
Nuclear repulsion energy177.130057
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 CISD/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' 3354 3078 27.18      
2 A' 3338 3063 5.20      
3 A' 3267 2998 56.84      
4 A' 3253 2985 18.92      
5 A' 3202 2938 55.67      
6 A' 1609 1476 0.78      
7 A' 1591 1460 1.24      
8 A' 1464 1343 1.19      
9 A' 1343 1232 0.88      
10 A' 1286 1180 0.25      
11 A' 1203 1104 0.47      
12 A' 1098 1007 0.04      
13 A' 1041 955 3.21      
14 A' 1017 933 7.10      
15 A' 968 889 0.01      
16 A' 840 771 7.20      
17 A' 831 762 1.25      
18 A' 437 401 0.44      
19 A" 3329 3055 22.00      
20 A" 3249 2982 0.24      
21 A" 3192 2929 49.66      
22 A" 1578 1448 0.00      
23 A" 1405 1289 3.95      
24 A" 1346 1235 0.72      
25 A" 1298 1191 0.01      
26 A" 1200 1101 0.04      
27 A" 1170 1074 2.15      
28 A" 1141 1047 0.34      
29 A" 1054 967 4.08      
30 A" 994 912 0.12      
31 A" 849 779 14.57      
32 A" 724 665 0.04      
33 A" 276 253 0.35      

Unscaled Zero Point Vibrational Energy (zpe) 26972.4 cm-1
Scaled (by 0.9176) Zero Point Vibrational Energy (zpe) 24749.9 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 CISD/6-31G**
ABC
0.30918 0.20633 0.16176

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.246 -0.538 0.758
C2 -0.246 -0.538 -0.758
C3 -0.246 0.987 0.777
C4 -0.246 0.987 -0.777
C5 0.941 -1.034 0.000
H6 -0.789 -1.172 1.435
H7 -0.789 -1.172 -1.435
H8 0.602 1.454 1.271
H9 0.602 1.454 -1.271
H10 -1.158 1.408 1.183
H11 -1.158 1.408 -1.183
H12 1.861 -0.469 0.000
H13 1.078 -2.102 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.51571.52472.16371.49301.07542.34682.22402.96612.19062.89562.24002.1845
C21.51572.16371.52471.49302.34681.07542.96612.22402.89562.19062.24002.1845
C31.52472.16371.55502.46912.32163.13901.08612.26521.08352.20292.67623.4491
C42.16371.52471.55502.46913.13902.32162.26521.08612.20291.08352.67623.4491
C51.49301.49302.46912.46912.25192.25192.81362.81363.43053.43051.07971.0767
H61.07542.34682.32163.13902.25192.87052.97594.01882.61893.69453.09452.5311
H72.34681.07543.13902.32162.25192.87054.01882.97593.69452.61893.09452.5311
H82.22402.96611.08612.26522.81362.97594.01882.54131.76283.01992.62583.8054
H92.96612.22402.26521.08612.81364.01882.97592.54133.01991.76282.62583.8054
H102.19062.89561.08352.20293.43052.61893.69451.76283.01992.36573.74664.3262
H112.89562.19062.20291.08353.43053.69452.61893.01991.76282.36573.74664.3262
H122.24002.24002.67622.67621.07973.09453.09452.62582.62583.74663.74661.8114
H132.18452.18453.44913.44911.07672.53112.53113.80543.80544.32624.32621.8114

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 90.738 C1 C2 C5 59.496
C1 C2 H7 129.044 C1 C3 C4 89.262
C1 C3 H8 115.810 C1 C3 H10 113.171
C1 C5 C2 61.008 C1 C5 H12 120.226
C1 C5 H13 115.492 C2 C1 C3 90.738
C2 C1 C5 59.496 C2 C1 H6 129.044
C2 C4 C3 89.262 C2 C4 H9 115.810
C2 C4 H11 113.171 C2 C5 H12 120.226
C2 C5 H13 115.492 C3 C1 C5 109.808
C3 C1 H6 125.593 C3 C4 H9 117.006
C3 C4 H11 111.971 C4 C2 C5 109.808
C4 C2 H7 125.593 C4 C3 H8 117.006
C4 C3 H10 111.971 C5 C1 H6 121.662
C5 C2 H7 121.662 H8 C3 H10 108.685
H9 C4 H11 108.685 H12 C5 H13 114.280
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability