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

using model chemistry: PBEPBE/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 PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-195.019779
Energy at 298.15K-195.028793
Nuclear repulsion energy174.832110
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 PBEPBE/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' 3136 3118 17.44      
2 A' 3108 3090 12.87      
3 A' 3054 3037 41.09      
4 A' 3026 3008 21.72      
5 A' 2980 2963 62.16      
6 A' 1431 1422 1.65      
7 A' 1410 1402 2.26      
8 A' 1324 1317 0.60      
9 A' 1198 1191 0.95      
10 A' 1172 1165 0.06      
11 A' 1094 1088 0.47      
12 A' 1002 996 0.71      
13 A' 963 958 1.54      
14 A' 919 914 6.60      
15 A' 882 877 2.17      
16 A' 758 753 0.88      
17 A' 749 745 7.54      
18 A' 403 400 0.70      
19 A" 3099 3081 24.43      
20 A" 3037 3019 0.56      
21 A" 2971 2954 48.53      
22 A" 1399 1391 0.21      
23 A" 1259 1252 4.45      
24 A" 1203 1196 0.53      
25 A" 1173 1166 0.08      
26 A" 1077 1071 0.00      
27 A" 1030 1024 2.47      
28 A" 1004 998 0.05      
29 A" 970 964 4.11      
30 A" 901 896 0.15      
31 A" 789 784 11.91      
32 A" 659 655 0.07      
33 A" 257 256 0.47      

Unscaled Zero Point Vibrational Energy (zpe) 24717.2 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 24573.9 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 PBEPBE/cc-pVDZ
ABC
0.30177 0.20154 0.15775

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.246 -0.539 0.771
C2 -0.246 -0.539 -0.771
C3 -0.246 0.998 0.784
C4 -0.246 0.998 -0.784
C5 0.945 -1.053 0.000
H6 -0.809 -1.184 1.461
H7 -0.809 -1.184 -1.461
H8 0.620 1.477 1.288
H9 0.620 1.477 -1.288
H10 -1.178 1.427 1.199
H11 -1.178 1.427 -1.199
H12 1.894 -0.487 0.000
H13 1.066 -2.146 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.54161.53662.18571.50921.10012.39082.25383.00842.21732.93472.27532.2138
C21.54162.18571.53661.50922.39081.10013.00842.25382.93472.21732.27532.2138
C31.53662.18571.56722.49772.35323.18091.11072.29581.10692.23222.72033.4961
C42.18571.53661.56722.49773.18092.35322.29581.11072.23221.10692.72033.4961
C51.50921.50922.49772.49772.28682.28682.85722.85723.47793.47791.10451.1003
H61.10012.39082.35323.18092.28682.92283.02524.08422.65043.74603.15062.5645
H72.39081.10013.18092.35322.28682.92284.08423.02523.74602.65043.15062.5645
H82.25383.00841.11072.29582.85723.02524.08422.57601.80083.06902.67213.8712
H93.00842.25382.29581.11072.85724.08423.02522.57603.06901.80082.67213.8712
H102.21732.93471.10692.23223.47792.65043.74601.80083.06902.39763.81324.3868
H112.93472.21732.23221.10693.47793.74602.65043.06901.80082.39763.81324.3868
H122.27532.27532.72032.72031.10453.15063.15062.67212.67213.81323.81321.8542
H132.21382.21383.49613.49611.10032.56452.56453.87123.87124.38684.38681.8542

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 90.477 C1 C2 C5 59.287
C1 C2 H7 128.885 C1 C3 C4 89.523
C1 C3 H8 115.782 C1 C3 H10 113.015
C1 C5 C2 61.425 C1 C5 H12 120.244
C1 C5 H13 115.170 C2 C1 C3 90.477
C2 C1 C5 59.287 C2 C1 H6 128.885
C2 C4 C3 89.523 C2 C4 H9 115.782
C2 C4 H11 113.015 C2 C5 H12 120.244
C2 C5 H13 115.170 C3 C1 C5 110.176
C3 C1 H6 125.560 C3 C4 H9 117.008
C3 C4 H11 112.030 C4 C2 C5 110.176
C4 C2 H7 125.560 C4 C3 H8 117.008
C4 C3 H10 112.030 C5 C1 H6 121.630
C5 C2 H7 121.630 H8 C3 H10 108.594
H9 C4 H11 108.594 H12 C5 H13 114.487
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.083      
2 C -0.083      
3 C 0.025      
4 C 0.025      
5 C 0.031      
6 H -0.021      
7 H -0.021      
8 H 0.017      
9 H 0.017      
10 H 0.025      
11 H 0.025      
12 H 0.017      
13 H 0.028      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.264 -0.088 0.000 0.279
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -31.472 0.107 0.000
y 0.107 -30.977 0.000
z 0.000 0.000 -32.540
Traceless
 xyz
x 0.287 0.107 0.000
y 0.107 1.029 0.000
z 0.000 0.000 -1.316
Polar
3z2-r2-2.632
x2-y2-0.494
xy0.107
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.329 -0.404 0.000
y -0.404 8.202 0.000
z 0.000 0.000 7.517


<r2> (average value of r2) Å2
<r2> 99.295
(<r2>)1/2 9.965