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All results from a given calculation for C5H8O (Cyclopentanone)

using model chemistry: G3B3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at G3B3
 hartrees
Energy at 0K-270.354364
Energy at 298.15K-270.347708
HF Energy-270.572862
Nuclear repulsion energy234.590765
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/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 3120 2996 7.41      
2 A 3109 2985 23.85      
3 A 3051 2929 22.98      
4 A 3041 2921 5.06      
5 A 1846 1773 211.22      
6 A 1539 1478 0.77      
7 A 1481 1422 0.13      
8 A 1361 1307 0.72      
9 A 1324 1271 0.64      
10 A 1235 1186 0.01      
11 A 1186 1139 0.42      
12 A 1042 1000 0.64      
13 A 976 938 0.13      
14 A 902 866 0.22      
15 A 814 782 0.91      
16 A 715 686 1.25      
17 A 567 545 4.86      
18 A 230 221 0.07      
19 B 3121 2997 31.93      
20 B 3113 2989 30.81      
21 B 3057 2936 41.23      
22 B 3041 2920 7.82      
23 B 1525 1465 3.84      
24 B 1481 1422 16.19      
25 B 1360 1306 4.61      
26 B 1313 1261 5.12      
27 B 1267 1216 0.98      
28 B 1179 1132 2.44      
29 B 1159 1113 78.95      
30 B 977 939 9.59      
31 B 934 897 0.96      
32 B 850 816 10.37      
33 B 587 564 2.72      
34 B 470 451 4.19      
35 B 451 433 4.08      
36 B 103 99 5.08      

Unscaled Zero Point Vibrational Energy (zpe) 26760.9 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 25698.5 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 B3LYP/6-31G*
ABC
0.21963 0.11093 0.07957

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 2.139
C2 0.000 0.000 0.928
C3 0.000 1.245 0.030
C4 0.000 -1.245 0.030
C5 0.298 0.714 -1.382
C6 -0.298 -0.714 -1.382
H7 -1.006 1.686 0.084
H8 1.006 -1.686 0.084
H9 0.699 1.998 0.406
H10 -0.699 -1.998 0.406
H11 -0.115 1.343 -2.176
H12 0.115 -1.343 -2.176
H13 1.383 0.662 -1.540
H14 -1.383 -0.662 -1.540

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.21102.44892.44893.60493.60492.84252.84252.73562.73564.52084.52083.98523.9852
C21.21101.53481.53482.43602.43602.13732.13732.18002.18003.38423.38422.90502.9050
C32.44891.53482.48931.53752.43281.09983.09931.09423.33832.21123.40262.17182.8302
C42.44891.53482.48932.43281.53753.09931.09983.33831.09423.40262.21122.83022.1718
C53.60492.43601.53752.43281.54752.18952.90002.23723.39771.09432.21291.09772.1781
C63.60492.43602.43281.53751.54752.90002.18953.39772.23722.21291.09432.17811.0977
H72.84252.13731.09983.09932.18952.90003.92701.76273.71102.45313.94223.06472.8791
H82.84252.13733.09931.09982.90002.18953.92703.71101.76273.94222.45312.87913.0647
H92.73562.18001.09423.33832.23723.39771.76273.71104.23322.78514.26282.45733.8978
H102.73562.18003.33831.09423.39772.23723.71101.76274.23324.26282.78513.89782.4573
H114.52083.38422.21123.40261.09432.21292.45313.94222.78514.26282.69651.76482.4564
H124.52083.38423.40262.21122.21291.09433.94222.45314.26282.78512.69652.45641.7648
H133.98522.90502.17182.83021.09772.17813.06472.87912.45733.89781.76482.45643.0667
H143.98522.90502.83022.17182.17811.09772.87913.06473.89782.45732.45641.76483.0667

picture of Cyclopentanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 125.893 O1 C2 C4 125.893
C2 C3 C5 105.022 C2 C3 H7 107.421
C2 C3 H9 110.853 C2 C4 C6 105.022
C2 C4 H8 107.421 C2 C4 H10 110.853
C3 C2 C4 108.214 C3 C5 C6 104.100
C3 C5 H11 113.292 C3 C5 H13 109.817
C4 C6 C5 104.100 C4 C6 H12 113.292
C4 C6 H14 109.817 C5 C3 H7 111.029
C5 C3 H9 115.282 C5 C6 H12 112.692
C5 C6 H14 109.674 C6 C4 H8 111.029
C6 C4 H10 115.282 C6 C5 H11 112.692
C6 C5 H13 109.674 H7 C3 H9 107.021
H8 C4 H10 107.021 H11 C5 H13 107.245
H12 C6 H14 107.245
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.446      
2 C 0.442      
3 C -0.350      
4 C -0.350      
5 C -0.282      
6 C -0.282      
7 H 0.172      
8 H 0.172      
9 H 0.171      
10 H 0.171      
11 H 0.145      
12 H 0.145      
13 H 0.145      
14 H 0.145      


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 -2.895 2.895
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 153.663
(<r2>)1/2 12.396