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All results from a given calculation for C5H10 (Cyclopentane)

using model chemistry: HF/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/6-31G*
 hartrees
Energy at 0K-195.163582
Energy at 298.15K-195.175444
HF Energy-195.163582
Nuclear repulsion energy187.997030
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 HF/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 3272 2940 159.22      
2 A 3255 2925 30.10      
3 A 3254 2924 43.08      
4 A 3252 2922 20.31      
5 A 3238 2909 51.69      
6 A 3225 2898 70.95      
7 A 3207 2881 50.51      
8 A 3204 2879 11.96      
9 A 3199 2874 42.35      
10 A 3196 2871 23.66      
11 A 1676 1506 0.03      
12 A 1648 1481 0.71      
13 A 1647 1480 1.01      
14 A 1638 1472 3.49      
15 A 1632 1466 0.02      
16 A 1497 1345 0.35      
17 A 1496 1344 0.42      
18 A 1484 1334 0.04      
19 A 1460 1311 0.45      
20 A 1443 1297 0.01      
21 A 1403 1260 0.87      
22 A 1358 1220 0.61      
23 A 1354 1216 0.28      
24 A 1327 1192 0.61      
25 A 1305 1173 0.01      
26 A 1136 1021 0.02      
27 A 1117 1003 0.01      
28 A 1088 978 0.37      
29 A 1054 947 0.91      
30 A 973 874 1.58      
31 A 968 869 1.46      
32 A 941 846 0.23      
33 A 941 846 0.24      
34 A 890 799 0.12      
35 A 830 746 0.43      
36 A 663 596 0.06      
37 A 589 529 0.52      
38 A 280 251 0.00      
39 A 23 21 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 33079.8 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 29722.2 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 HF/6-31G*
ABC
0.21773 0.21756 0.12547

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.852 -0.921 0.254
C2 -0.111 1.283 0.126
C3 -1.275 0.264 0.014
C4 -0.613 -1.125 -0.154
C5 1.157 0.495 -0.241
H6 -0.030 1.645 1.147
H7 -0.257 2.152 -0.506
H8 -1.923 0.491 -0.826
H9 -1.897 0.296 0.903
H10 -0.657 -1.435 -1.194
H11 -1.109 -1.896 0.427
H12 1.515 -1.674 -0.160
H13 0.950 -0.960 1.337
H14 1.293 0.483 -1.320
H15 2.056 0.919 0.194

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13 H14 H15
C12.40792.44681.53441.53072.85663.35403.29533.07572.15402.19631.08521.08792.15422.2001
C22.40791.55092.47531.53651.08621.08472.19502.18413.07033.34483.38582.76052.16792.1983
C32.44681.55091.54822.45632.17712.20691.08481.08492.17492.20543.40182.86322.90203.4000
C41.53442.47531.54822.40123.11543.31492.18582.18701.08661.08482.19792.16592.75253.3802
C51.53071.53652.45632.40122.15782.19413.13513.26752.81543.36082.19982.15641.08771.0851
H62.85661.08622.17713.11542.15781.74342.96772.31723.91943.77093.88712.79013.03072.4059
H73.35401.08472.20693.31492.19411.74342.37452.84993.67424.24014.23033.81282.41882.7130
H83.29532.19501.08482.18583.13512.96772.37451.73942.33372.81564.11703.87733.25364.1303
H93.07572.18411.08492.18703.26752.31722.84991.73942.98812.37694.08063.14183.89254.0651
H102.15403.07032.17491.08662.81543.91943.67422.33372.98811.74502.41803.03542.73773.8513
H112.19633.34482.20541.08483.36083.77094.24012.81562.37691.74502.69762.43683.80444.2420
H121.08523.38583.40182.19792.19983.88714.23034.11704.08062.41802.69761.75162.45862.6722
H131.08792.76052.86322.16592.15642.79013.81283.87733.14183.03542.43681.75163.04262.4626
H142.15422.16792.90202.75251.08773.03072.41883.25363.89252.73773.80442.45863.04261.7506
H152.20012.19833.40003.38021.08512.40592.71304.13034.06513.85134.24202.67222.46261.7506

picture of Cyclopentane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C4 C3 105.073 C1 C4 H10 109.343
C1 C4 H11 112.843 C1 C5 C2 103.445
C1 C5 H14 109.551 C1 C5 H15 113.407
C2 C3 C4 106.014 C2 C3 H8 111.551
C2 C3 H9 110.673 C2 C5 H14 110.229
C2 C5 H15 112.835 C3 C2 C5 105.420
C3 C2 H6 110.039 C3 C2 H7 112.515
C3 C4 H10 110.037 C3 C4 H11 112.589
C4 C1 C5 103.145 C4 C1 H12 112.952
C4 C1 H13 110.200 C4 C3 H8 111.007
C4 C3 H9 111.095 C5 C1 H12 113.382
C5 C1 H13 109.713 C5 C2 H6 109.520
C5 C2 H7 112.513 H6 C2 H7 106.844
H8 C3 H9 106.577 H10 C4 H11 106.952
H12 C1 H13 107.423 H14 C5 H15 107.350
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.318      
2 C -0.326      
3 C -0.327      
4 C -0.324      
5 C -0.319      
6 H 0.160      
7 H 0.165      
8 H 0.164      
9 H 0.164      
10 H 0.159      
11 H 0.165      
12 H 0.163      
13 H 0.155      
14 H 0.155      
15 H 0.163      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.002 -0.001 0.000 0.002
CHELPG -0.012 0.004 -0.001 0.013
AIM -0.020 0.007 0.001 0.021
ESP -0.025 0.003 0.002 0.025


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.951 0.007 -0.000
y 0.007 -33.935 -0.024
z -0.000 -0.024 -32.811
Traceless
 xyz
x -0.578 0.007 -0.000
y 0.007 -0.554 -0.024
z -0.000 -0.024 1.132
Polar
3z2-r22.264
x2-y2-0.016
xy0.007
xz-0.000
yz-0.024


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.367 0.003 0.000
y 0.003 7.370 0.013
z 0.000 0.013 6.819


<r2> (average value of r2) Å2
<r2> 115.362
(<r2>)1/2 10.741