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All results from a given calculation for C5H8O (Cyclopentanone)

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 C2 1A
Energy calculated at HF/6-31G**
 hartrees
Energy at 0K-268.878959
Energy at 298.15K-268.888896
HF Energy-268.878959
Nuclear repulsion energy236.626095
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 3270 2951 5.67      
2 A 3253 2936 32.46      
3 A 3195 2884 14.63      
4 A 3192 2881 17.93      
5 A 2041 1842 302.15      
6 A 1643 1483 0.59      
7 A 1585 1430 0.13      
8 A 1476 1333 0.36      
9 A 1440 1300 0.02      
10 A 1333 1203 0.29      
11 A 1291 1165 1.65      
12 A 1104 996 0.33      
13 A 1051 949 0.05      
14 A 954 862 0.25      
15 A 882 796 0.42      
16 A 770 695 0.22      
17 A 610 550 5.79      
18 A 247 223 0.04      
19 B 3271 2952 41.36      
20 B 3257 2940 45.48      
21 B 3197 2886 47.64      
22 B 3193 2882 16.03      
23 B 1625 1467 3.89      
24 B 1586 1432 17.48      
25 B 1472 1329 3.16      
26 B 1434 1294 10.65      
27 B 1370 1237 0.57      
28 B 1283 1158 34.26      
29 B 1277 1152 36.69      
30 B 1037 936 9.62      
31 B 1002 905 1.48      
32 B 915 826 6.10      
33 B 628 567 3.11      
34 B 509 460 8.54      
35 B 488 440 7.86      
36 B 102 92 6.17      

Unscaled Zero Point Vibrational Energy (zpe) 28490.3 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 25715.4 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
0.22221 0.11322 0.08102

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 2.110
C2 0.000 0.000 0.922
C3 0.000 1.239 0.035
C4 0.000 -1.239 0.035
C5 0.300 0.709 -1.372
C6 -0.300 -0.709 -1.372
H7 -0.995 1.676 0.086
H8 0.995 -1.676 0.086
H9 0.699 1.978 0.407
H10 -0.699 -1.978 0.407
H11 -0.107 1.336 -2.157
H12 0.107 -1.336 -2.157
H13 1.375 0.653 -1.525
H14 -1.375 -0.653 -1.525

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.18872.41662.41663.56613.56612.80992.80992.70232.70234.47254.47253.94143.9414
C21.18871.52311.52312.41912.41912.12062.12062.16012.16013.35743.35742.88162.8816
C32.41661.52312.47731.53292.42151.08823.08041.08323.31262.19683.38292.16082.8111
C42.41661.52312.47732.42151.53293.08041.08823.31261.08323.38292.19682.81112.1608
C53.56612.41911.53292.42151.53992.17652.88092.22093.37371.08362.19891.08722.1636
C63.56612.41912.42151.53291.53992.88092.17653.37372.22092.19891.08362.16361.0872
H72.80992.12061.08823.08042.17652.88093.89851.75023.68012.43653.91383.04322.8574
H82.80992.12063.08041.08822.88092.17653.89853.68011.75023.91382.43652.85743.0432
H92.70232.16011.08323.31262.22093.37371.75023.68014.19572.76304.23132.43883.8669
H102.70232.16013.31261.08323.37372.22093.68011.75024.19574.23132.76303.86692.4388
H114.47253.35742.19683.38291.08362.19892.43653.91382.76304.23132.68001.74932.4410
H124.47253.35743.38292.19682.19891.08363.91382.43654.23132.76302.68002.44101.7493
H133.94142.88162.16082.81111.08722.16363.04322.85742.43883.86691.74932.44103.0431
H143.94142.88162.81112.16082.16361.08722.85743.04323.86692.43882.44101.74933.0431

picture of Cyclopentanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 125.585 O1 C2 C4 125.585
C2 C3 C5 104.670 C2 C3 H7 107.436
C2 C3 H9 110.824 C2 C4 C6 104.670
C2 C4 H8 107.436 C2 C4 H10 110.824
C3 C2 C4 108.829 C3 C5 C6 104.004
C3 C5 H11 113.074 C3 C5 H13 109.952
C4 C6 C5 104.004 C4 C6 H12 113.074
C4 C6 H14 109.952 C5 C3 H7 111.148
C5 C3 H9 115.116 C5 C6 H12 112.732
C5 C6 H14 109.683 C6 C4 H8 111.148
C6 C4 H10 115.116 C6 C5 H11 112.732
C6 C5 H13 109.683 H7 C3 H9 107.426
H8 C4 H10 107.426 H11 C5 H13 107.376
H12 C6 H14 107.376
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 O -0.532      
2 C 0.511      
3 C -0.309      
4 C -0.309      
5 C -0.247      
6 C -0.247      
7 H 0.154      
8 H 0.154      
9 H 0.158      
10 H 0.158      
11 H 0.130      
12 H 0.130      
13 H 0.125      
14 H 0.125      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -3.298 3.298
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.135 -0.174 0.000
y -0.174 -35.026 0.000
z 0.000 0.000 -45.472
Traceless
 xyz
x 5.114 -0.174 0.000
y -0.174 5.277 0.000
z 0.000 0.000 -10.391
Polar
3z2-r2-20.782
x2-y2-0.108
xy-0.174
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.260 0.040 0.000
y 0.040 7.366 0.000
z 0.000 0.000 8.108


<r2> (average value of r2) Å2
<r2> 151.842
(<r2>)1/2 12.322