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All results from a given calculation for C5H8O (Cyclopentanone)

using model chemistry: B3LYP/CEP-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 B3LYP/CEP-31G*
 hartrees
Energy at 0K-49.038077
Energy at 298.15K-49.047568
HF Energy-49.038077
Nuclear repulsion energy126.246097
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 B3LYP/CEP-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 3118 3011 7.85      
2 A 3102 2996 23.49      
3 A 3053 2949 29.93      
4 A 3047 2943 12.36      
5 A 1810 1748 257.77      
6 A 1512 1460 1.14      
7 A 1453 1403 0.00      
8 A 1337 1291 0.54      
9 A 1302 1258 0.73      
10 A 1206 1165 0.06      
11 A 1171 1131 0.41      
12 A 1028 993 1.09      
13 A 944 911 0.71      
14 A 893 862 0.68      
15 A 803 775 0.36      
16 A 700 676 1.53      
17 A 553 534 6.57      
18 A 232 225 0.04      
19 B 3123 3016 77.69      
20 B 3108 3001 35.04      
21 B 3054 2949 46.85      
22 B 3047 2943 17.40      
23 B 1494 1443 5.42      
24 B 1455 1405 20.93      
25 B 1332 1287 3.11      
26 B 1295 1250 8.87      
27 B 1247 1204 2.91      
28 B 1160 1121 42.97      
29 B 1152 1112 27.88      
30 B 963 930 13.04      
31 B 900 869 1.70      
32 B 837 808 11.92      
33 B 570 550 2.44      
34 B 460 445 3.93      
35 B 440 425 4.29      
36 B 101 97 5.47      

Unscaled Zero Point Vibrational Energy (zpe) 26501.7 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 25592.7 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 B3LYP/CEP-31G*
ABC
0.21606 0.10903 0.07835

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 2.159
C2 0.000 0.000 0.933
C3 0.000 1.256 0.028
C4 0.000 -1.256 0.028
C5 0.312 0.715 -1.392
C6 -0.312 -0.715 -1.392
H7 -1.015 1.693 0.073
H8 1.015 -1.693 0.073
H9 0.703 2.012 0.412
H10 -0.703 -2.012 0.412
H11 -0.094 1.354 -2.193
H12 0.094 -1.354 -2.193
H13 1.405 0.647 -1.540
H14 -1.405 -0.647 -1.540

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.22642.47362.47363.63623.63622.87212.87212.75552.75554.55904.55904.00924.0092
C21.22641.54791.54792.45262.45262.15332.15332.19372.19373.40793.40792.91652.9165
C32.47361.54792.51201.55162.44971.10623.11941.10123.36462.22553.42852.19132.8380
C42.47361.54792.51202.44971.55163.11941.10623.36461.10123.42852.22552.83802.1913
C53.63622.45261.55162.44971.56092.20572.90562.25613.42401.10192.22941.10452.1968
C63.63622.45262.44971.55161.56092.90562.20573.42402.25612.22941.10192.19681.1045
H72.87212.15331.10623.11942.20572.90563.94841.77963.73382.46983.95613.09042.8691
H82.87212.15333.11941.10622.90562.20573.94843.73381.77963.95612.46982.86913.0904
H92.75552.19371.10123.36462.25613.42401.77963.73384.26212.80304.29972.48303.9145
H102.75552.19373.36461.10123.42402.25613.73381.77964.26214.29972.80303.91452.4830
H114.55903.40792.22553.42851.10192.22942.46983.95612.80304.29972.71411.78112.4798
H124.55903.40793.42852.22552.22941.10193.95612.46984.29972.80302.71412.47981.7811
H134.00922.91652.19132.83801.10452.19683.09042.86912.48303.91451.78112.47983.0934
H144.00922.91652.83802.19132.19681.10452.86913.09043.91452.48302.47981.78113.0934

picture of Cyclopentanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 125.764 O1 C2 C4 125.764
C2 C3 C5 104.611 C2 C3 H7 107.276
C2 C3 H9 110.676 C2 C4 C6 104.611
C2 C4 H8 107.276 C2 C4 H10 110.676
C3 C2 C4 108.471 C3 C5 C6 103.825
C3 C5 H11 112.913 C3 C5 H13 110.038
C4 C6 C5 103.825 C4 C6 H12 112.913
C4 C6 H14 110.038 C5 C3 H7 111.076
C5 C3 H9 115.485 C5 C6 H12 112.562
C5 C6 H14 109.832 C6 C4 H8 111.076
C6 C4 H10 115.485 C6 C5 H11 112.562
C6 C5 H13 109.832 H7 C3 H9 107.455
H8 C4 H10 107.455 H11 C5 H13 107.648
H12 C6 H14 107.648
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.049      
2 C -0.290      
3 C -0.224      
4 C -0.224      
5 C -0.266      
6 C -0.266      
7 H 0.143      
8 H 0.143      
9 H 0.200      
10 H 0.200      
11 H 0.182      
12 H 0.182      
13 H 0.134      
14 H 0.134      


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 -3.215 3.215
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.414 -0.240 0.000
y -0.240 -34.570 0.000
z 0.000 0.000 -44.626
Traceless
 xyz
x 5.183 -0.240 0.000
y -0.240 4.950 0.000
z 0.000 0.000 -10.134
Polar
3z2-r2-20.267
x2-y20.155
xy-0.240
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.246 0.096 0.000
y 0.096 8.148 0.000
z 0.000 0.000 8.965


<r2> (average value of r2) Å2
<r2> 128.170
(<r2>)1/2 11.321