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All results from a given calculation for C5H8O (Cyclopentanone)

using model chemistry: BLYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at BLYP/3-21G*
 hartrees
Energy at 0K-268.966858
Energy at 298.15K-268.976300
HF Energy-268.966858
Nuclear repulsion energy231.339953
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 BLYP/3-21G*
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 3047 3027 9.08      
2 A 3041 3021 16.06      
3 A 2986 2966 19.30      
4 A 2966 2947 6.41      
5 A 1696 1684 128.81      
6 A 1523 1513 1.19      
7 A 1469 1459 0.01      
8 A 1332 1324 0.25      
9 A 1291 1283 4.13      
10 A 1222 1214 0.05      
11 A 1148 1141 0.03      
12 A 1001 995 1.15      
13 A 976 970 0.17      
14 A 861 855 0.47      
15 A 774 769 0.17      
16 A 674 670 1.91      
17 A 546 543 4.16      
18 A 227 225 0.08      
19 B 3052 3033 34.41      
20 B 3042 3023 20.09      
21 B 2992 2972 30.96      
22 B 2966 2946 7.24      
23 B 1515 1505 5.28      
24 B 1468 1459 19.21      
25 B 1332 1323 0.80      
26 B 1298 1290 0.82      
27 B 1242 1234 0.08      
28 B 1171 1164 0.07      
29 B 1055 1049 76.77      
30 B 945 938 17.00      
31 B 918 912 3.57      
32 B 817 812 23.12      
33 B 573 569 2.92      
34 B 461 458 0.21      
35 B 429 426 4.07      
36 B 96 96 3.83      

Unscaled Zero Point Vibrational Energy (zpe) 26076.0 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 25906.5 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 BLYP/3-21G*
ABC
0.21464 0.10714 0.07720

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/3-21G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 2.183
C2 0.000 0.000 0.945
C3 0.000 1.260 0.023
C4 0.000 -1.260 0.023
C5 0.312 0.721 -1.403
C6 -0.312 -0.721 -1.403
H7 -1.018 1.695 0.058
H8 1.018 -1.695 0.058
H9 0.705 2.016 0.399
H10 -0.705 -2.016 0.399
H11 -0.103 1.356 -2.199
H12 0.103 -1.356 -2.199
H13 1.404 0.647 -1.544
H14 -1.404 -0.647 -1.544

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.23822.50132.50133.67123.67122.90252.90252.78332.78334.58894.58894.03524.0352
C21.23821.56161.56162.47592.47592.16662.16662.20472.20473.42603.42602.93022.9302
C32.50131.56162.52021.55572.46051.10703.12511.10033.37222.22653.43402.19132.8396
C42.50131.56162.52022.46051.55573.12511.10703.37221.10033.43402.22652.83962.1913
C53.67122.47591.55572.46051.57152.20222.90962.25333.43111.09992.23441.10362.1996
C63.67122.47592.46051.55571.57152.90962.20223.43112.25332.23441.09992.19961.1036
H72.90252.16661.10703.12512.20222.90963.95321.78563.73922.45913.95673.08672.8633
H82.90252.16663.12511.10702.90962.20223.95323.73921.78563.95672.45912.86333.0867
H92.78332.20471.10033.37222.25333.43111.78563.73924.27182.79984.29932.47703.9137
H102.78332.20473.37221.10033.43112.25333.73921.78564.27184.29932.79983.91372.4770
H114.58893.42602.22653.43401.09992.23442.45913.95672.79984.29932.71971.78962.4773
H124.58893.42603.43402.22652.23441.09993.95672.45914.29932.79982.71972.47731.7896
H134.03522.93022.19132.83961.10362.19963.08672.86332.47703.91371.78962.47733.0925
H144.03522.93022.83962.19132.19961.10362.86333.08673.91372.47702.47731.78963.0925

picture of Cyclopentanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 126.207 O1 C2 C4 126.207
C2 C3 C5 105.169 C2 C3 H7 107.333
C2 C3 H9 110.639 C2 C4 C6 105.169
C2 C4 H8 107.333 C2 C4 H10 110.639
C3 C2 C4 107.587 C3 C5 C6 103.780
C3 C5 H11 112.823 C3 C5 H13 109.811
C4 C6 C5 103.780 C4 C6 H12 112.823
C4 C6 H14 109.811 C5 C3 H7 110.465
C5 C3 H9 114.996 C5 C6 H12 112.324
C5 C6 H14 109.382 C6 C4 H8 110.465
C6 C4 H10 114.996 C6 C5 H11 112.324
C6 C5 H13 109.382 H7 C3 H9 107.992
H8 C4 H10 107.992 H11 C5 H13 108.619
H12 C6 H14 108.619
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.416      
2 C 0.415      
3 C -0.423      
4 C -0.423      
5 C -0.356      
6 C -0.356      
7 H 0.211      
8 H 0.211      
9 H 0.205      
10 H 0.205      
11 H 0.181      
12 H 0.181      
13 H 0.183      
14 H 0.183      


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 -2.532 2.532
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.330 -0.238 0.000
y -0.238 -35.138 0.000
z 0.000 0.000 -43.542
Traceless
 xyz
x 4.010 -0.238 0.000
y -0.238 4.298 0.000
z 0.000 0.000 -8.308
Polar
3z2-r2-16.616
x2-y2-0.192
xy-0.238
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.091 0.036 0.000
y 0.036 7.591 0.000
z 0.000 0.000 8.240


<r2> (average value of r2) Å2
<r2> 157.499
(<r2>)1/2 12.550