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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-195.178867
Energy at 298.15K 
HF Energy-195.178867
Nuclear repulsion energy187.997020
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 3259 2941 155.24      
2 A 3241 2926 28.17      
3 A 3240 2925 38.95      
4 A 3237 2922 17.24      
5 A 3224 2910 49.50      
6 A 3211 2898 69.78      
7 A 3192 2881 54.93      
8 A 3190 2879 12.11      
9 A 3184 2874 42.65      
10 A 3181 2872 26.68      
11 A 1659 1498 0.04      
12 A 1631 1472 0.95      
13 A 1630 1471 1.27      
14 A 1621 1463 3.74      
15 A 1614 1457 0.02      
16 A 1485 1341 0.21      
17 A 1484 1339 0.27      
18 A 1473 1330 0.04      
19 A 1449 1308 0.45      
20 A 1431 1292 0.01      
21 A 1393 1257 0.85      
22 A 1349 1218 0.59      
23 A 1345 1214 0.26      
24 A 1318 1190 0.59      
25 A 1298 1171 0.01      
26 A 1131 1021 0.01      
27 A 1111 1003 0.00      
28 A 1081 976 0.38      
29 A 1047 945 0.90      
30 A 969 874 1.58      
31 A 964 870 1.47      
32 A 938 846 0.20      
33 A 937 846 0.31      
34 A 885 799 0.13      
35 A 824 744 0.50      
36 A 661 597 0.07      
37 A 586 529 0.62      
38 A 279 251 0.00      
39 A 19i 17i 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 32866.1 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 29664.9 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 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 0.482 -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 106.015 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 -0.224      
2 C -0.230      
3 C -0.231      
4 C -0.229      
5 C -0.224      
6 H 0.114      
7 H 0.116      
8 H 0.116      
9 H 0.116      
10 H 0.113      
11 H 0.115      
12 H 0.113      
13 H 0.109      
14 H 0.110      
15 H 0.114      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.003 -0.001 0.000 0.003
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.898 0.006 -0.000
y 0.006 -33.884 -0.023
z -0.000 -0.023 -32.798
Traceless
 xyz
x -0.557 0.006 -0.000
y 0.006 -0.537 -0.023
z -0.000 -0.023 1.094
Polar
3z2-r22.187
x2-y2-0.014
xy0.006
xz-0.000
yz-0.023


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.489 0.003 0.000
y 0.003 7.494 0.012
z 0.000 0.012 6.902


<r2> (average value of r2) Å2
<r2> 115.337
(<r2>)1/2 10.740