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

using model chemistry: QCISD/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 QCISD/cc-pVDZ
 hartrees
Energy at 0K-194.687511
Energy at 298.15K-194.696698
HF Energy-193.938829
Nuclear repulsion energy174.810037
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 QCISD/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' 3234 3103 22.15      
2 A' 3215 3084 5.88      
3 A' 3147 3019 50.17      
4 A' 3129 3002 18.41      
5 A' 3079 2954 55.17      
6 A' 1509 1448 1.13      
7 A' 1494 1433 1.46      
8 A' 1382 1326 0.87      
9 A' 1267 1216 0.68      
10 A' 1218 1169 0.04      
11 A' 1135 1089 0.52      
12 A' 1036 994 0.24      
13 A' 994 954 2.66      
14 A' 958 919 6.43      
15 A' 917 880 0.45      
16 A' 789 757 0.71      
17 A' 778 746 7.63      
18 A' 415 399 0.44      
19 A" 3206 3076 18.64      
20 A" 3129 3002 0.19      
21 A" 3069 2944 46.68      
22 A" 1478 1418 0.07      
23 A" 1325 1271 3.82      
24 A" 1264 1213 0.43      
25 A" 1226 1176 0.03      
26 A" 1130 1084 0.00      
27 A" 1093 1048 2.37      
28 A" 1061 1018 0.26      
29 A" 1001 960 3.47      
30 A" 944 905 0.14      
31 A" 810 777 13.30      
32 A" 692 664 0.02      
33 A" 261 250 0.32      

Unscaled Zero Point Vibrational Energy (zpe) 25690.2 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 24647.1 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 QCISD/cc-pVDZ
ABC
0.30037 0.20180 0.15803

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.249 -0.544 0.772
C2 -0.249 -0.544 -0.772
C3 -0.249 0.996 0.785
C4 -0.249 0.996 -0.785
C5 0.953 -1.042 0.000
H6 -0.799 -1.193 1.461
H7 -0.799 -1.193 -1.461
H8 0.616 1.470 1.286
H9 0.616 1.470 -1.286
H10 -1.178 1.425 1.196
H11 -1.178 1.425 -1.196
H12 1.886 -0.459 0.000
H13 1.091 -2.129 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.54411.54022.19031.51281.09492.39002.25133.00672.21832.93512.27142.2146
C21.54412.19031.54021.51282.39001.09493.00672.25132.93512.21832.27142.2146
C31.54022.19031.57062.49302.35623.18471.10582.29421.10292.23022.70023.4900
C42.19031.54021.57062.49303.18472.35622.29421.10582.23021.10292.70023.4900
C51.51281.51282.49302.49302.28652.28652.84222.84223.47263.47261.09951.0960
H61.09492.39002.35623.18472.28652.92303.02044.07952.65873.74983.14332.5661
H72.39001.09493.18472.35622.28652.92304.07953.02043.74982.65873.14332.5661
H82.25133.00671.10582.29422.84223.02044.07952.57241.79663.06292.64393.8516
H93.00672.25132.29421.10582.84224.07953.02042.57243.06291.79662.64393.8516
H102.21832.93511.10292.23023.47262.65873.74981.79663.06292.39213.79064.3833
H112.93512.21832.23021.10293.47263.74982.65873.06291.79662.39213.79064.3833
H122.27142.27142.70022.70021.09953.14333.14332.64392.64393.79063.79061.8491
H132.21462.21463.49003.49001.09602.56612.56613.85163.85164.38334.38331.8491

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 90.494 C1 C2 C5 59.315
C1 C2 H7 129.027 C1 C3 C4 89.506
C1 C3 H8 115.626 C1 C3 H10 113.089
C1 C5 C2 61.370 C1 C5 H12 119.967
C1 C5 H13 115.252 C2 C1 C3 90.494
C2 C1 C5 59.315 C2 C1 H6 129.027
C2 C4 C3 89.506 C2 C4 H9 115.626
C2 C4 H11 113.089 C2 C5 H12 119.967
C2 C5 H13 115.252 C3 C1 C5 109.480
C3 C1 H6 125.958 C3 C4 H9 116.934
C3 C4 H11 111.865 C4 C2 C5 109.480
C4 C2 H7 125.958 C4 C3 H8 116.934
C4 C3 H10 111.865 C5 C1 H6 121.693
C5 C2 H7 121.693 H8 C3 H10 108.863
H9 C4 H11 108.863 H12 C5 H13 114.752
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability