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

using model chemistry: CCD/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-194.683316
Energy at 298.15K-194.692521
HF Energy-193.939002
Nuclear repulsion energy174.908842
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/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3245 3104 20.25      
2 A' 3224 3085 6.30      
3 A' 3159 3022 47.22      
4 A' 3138 3002 17.49      
5 A' 3090 2956 52.65      
6 A' 1513 1448 1.32      
7 A' 1498 1433 1.50      
8 A' 1388 1328 0.68      
9 A' 1272 1217 0.75      
10 A' 1222 1169 0.04      
11 A' 1139 1090 0.53      
12 A' 1041 995 0.24      
13 A' 998 955 2.55      
14 A' 963 922 6.66      
15 A' 922 882 0.32      
16 A' 792 758 1.48      
17 A' 783 749 6.98      
18 A' 417 399 0.47      
19 A" 3215 3076 17.40      
20 A" 3141 3005 0.13      
21 A" 3080 2946 44.55      
22 A" 1481 1416 0.11      
23 A" 1330 1272 4.11      
24 A" 1268 1214 0.44      
25 A" 1229 1176 0.02      
26 A" 1134 1085 0.00      
27 A" 1098 1050 2.43      
28 A" 1066 1020 0.33      
29 A" 1005 961 3.56      
30 A" 946 905 0.16      
31 A" 814 779 13.43      
32 A" 694 664 0.03      
33 A" 262 250 0.32      

Unscaled Zero Point Vibrational Energy (zpe) 25783.0 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 24666.6 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 CCD/cc-pVDZ
ABC
0.30081 0.20195 0.15820

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.249 -0.544 0.771
C2 -0.249 -0.544 -0.771
C3 -0.249 0.996 0.785
C4 -0.249 0.996 -0.785
C5 0.953 -1.041 0.000
H6 -0.799 -1.192 1.460
H7 -0.799 -1.192 -1.460
H8 0.615 1.470 1.286
H9 0.615 1.470 -1.286
H10 -1.178 1.425 1.196
H11 -1.178 1.425 -1.196
H12 1.885 -0.459 0.000
H13 1.091 -2.128 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.54181.53962.18891.51181.09452.38722.25063.00502.21742.93332.27022.2134
C21.54182.18891.53961.51182.38721.09453.00502.25062.93332.21742.27022.2134
C31.53962.18891.57002.49212.35523.18281.10532.29321.10242.22942.69923.4886
C42.18891.53961.57002.49213.18282.35522.29321.10532.22941.10242.69923.4886
C51.51181.51182.49212.49212.28502.28502.84122.84123.47123.47121.09901.0955
H61.09452.38722.35523.18282.28502.91923.01954.07732.65743.74743.14182.5644
H72.38721.09453.18282.35522.28502.91924.07733.01953.74742.65743.14182.5644
H82.25063.00501.10532.29322.84123.01954.07732.57151.79583.06182.64303.8502
H93.00502.25062.29321.10532.84124.07733.01952.57153.06181.79582.64303.8502
H102.21742.93331.10242.22943.47122.65743.74741.79583.06182.39163.78914.3814
H112.93332.21742.22941.10243.47123.74742.65743.06181.79582.39163.78914.3814
H122.27022.27022.69922.69921.09903.14183.14182.64302.64303.78913.78911.8484
H132.21342.21343.48863.48861.09552.56442.56443.85023.85024.38144.38141.8484

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 90.524 C1 C2 C5 59.341
C1 C2 H7 128.992 C1 C3 C4 89.476
C1 C3 H8 115.641 C1 C3 H10 113.086
C1 C5 C2 61.318 C1 C5 H12 119.974
C1 C5 H13 115.258 C2 C1 C3 90.524
C2 C1 C5 59.341 C2 C1 H6 128.992
C2 C4 C3 89.476 C2 C4 H9 115.641
C2 C4 H11 113.086 C2 C5 H12 119.974
C2 C5 H13 115.258 C3 C1 C5 109.506
C3 C1 H6 125.949 C3 C4 H9 116.941
C3 C4 H11 111.878 C4 C2 C5 109.506
C4 C2 H7 125.949 C4 C3 H8 116.941
C4 C3 H10 111.878 C5 C1 H6 121.675
C5 C2 H7 121.675 H8 C3 H10 108.859
H9 C4 H11 108.859 H12 C5 H13 114.756
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability