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All results from a given calculation for C5H8O (Cyclopentanone)

using model chemistry: LSDA/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 LSDA/3-21G
 hartrees
Energy at 0K-267.641702
Energy at 298.15K-267.651305
HF Energy-267.641702
Nuclear repulsion energy235.048155
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 LSDA/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 3077 3026 3.94      
2 A 3071 3021 8.82      
3 A 2998 2948 12.30      
4 A 2976 2927 4.54      
5 A 1781 1751 139.45      
6 A 1486 1462 6.12      
7 A 1429 1405 0.57      
8 A 1320 1299 0.02      
9 A 1282 1261 14.14      
10 A 1216 1196 0.58      
11 A 1147 1128 0.19      
12 A 1052 1035 1.01      
13 A 966 950 1.18      
14 A 915 900 1.21      
15 A 808 795 0.10      
16 A 705 693 1.22      
17 A 550 541 6.47      
18 A 251 246 0.11      
19 B 3080 3029 9.29      
20 B 3073 3022 7.40      
21 B 3006 2956 22.21      
22 B 2976 2927 0.63      
23 B 1479 1455 14.71      
24 B 1428 1405 40.43      
25 B 1321 1299 0.34      
26 B 1288 1267 2.44      
27 B 1240 1219 0.59      
28 B 1167 1148 0.38      
29 B 1121 1102 95.85      
30 B 976 960 21.82      
31 B 923 908 1.96      
32 B 845 831 24.46      
33 B 582 573 2.57      
34 B 467 460 1.01      
35 B 443 436 5.02      
36 B 109 107 4.47      

Unscaled Zero Point Vibrational Energy (zpe) 26276.3 cm-1
Scaled (by 0.9836) Zero Point Vibrational Energy (zpe) 25845.4 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 LSDA/3-21G
ABC
0.22303 0.11066 0.08032

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 2.149
C2 0.000 0.000 0.923
C3 0.000 1.230 0.018
C4 0.000 -1.230 0.018
C5 0.328 0.696 -1.374
C6 -0.328 -0.696 -1.374
H7 -1.031 1.642 0.035
H8 1.031 -1.642 0.035
H9 0.678 2.007 0.407
H10 -0.678 -2.007 0.407
H11 -0.039 1.343 -2.187
H12 0.039 -1.343 -2.187
H13 1.423 0.583 -1.482
H14 -1.423 -0.583 -1.482

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.22652.46112.46113.60613.60612.86912.86912.74272.74274.53964.53963.94323.9432
C21.22651.52741.52742.42202.42202.13292.13292.18042.18043.38763.38762.85422.8542
C32.46111.52742.46101.52622.39931.11073.05231.10203.33092.20813.38902.16662.7498
C42.46111.52742.46102.39931.52623.05231.11073.33091.10203.38902.20812.74982.1666
C53.60612.42201.52622.39931.53912.17382.81922.23913.39011.10172.21431.10682.1709
C63.60612.42202.39931.52621.53912.81922.17383.39012.23912.21431.10172.17091.1068
H72.86912.13291.11073.05232.17382.81923.87851.78703.68552.45183.87203.07382.7208
H82.86912.13293.05231.11072.81922.17383.87853.68551.78703.87202.45182.72083.0738
H92.74272.18041.10203.33092.23913.39011.78703.68554.23732.77254.28522.48093.8328
H102.74272.18043.33091.10203.39012.23913.68551.78704.23734.28522.77253.83282.4809
H114.53963.38762.20813.38901.10172.21432.45183.87202.77254.28522.68681.79272.4739
H124.53963.38763.38902.20812.21431.10173.87202.45184.28522.77252.68682.47391.7927
H133.94322.85422.16662.74981.10682.17093.07382.72082.48093.83281.79272.47393.0757
H143.94322.85422.74982.16662.17091.10682.72083.07383.83282.48092.47391.79273.0757

picture of Cyclopentanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 126.331 O1 C2 C4 126.331
C2 C3 C5 104.967 C2 C3 H7 106.832
C2 C3 H9 111.007 C2 C4 C6 104.967
C2 C4 H8 106.832 C2 C4 H10 111.007
C3 C2 C4 107.338 C3 C5 C6 103.022
C3 C5 H11 113.350 C3 C5 H13 109.722
C4 C6 C5 103.022 C4 C6 H12 113.350
C4 C6 H14 109.722 C5 C3 H7 110.055
C5 C3 H9 115.917 C5 C6 H12 112.910
C5 C6 H14 109.167 C6 C4 H8 110.055
C6 C4 H10 115.917 C6 C5 H11 112.910
C6 C5 H13 109.167 H7 C3 H9 107.720
H8 C4 H10 107.720 H11 C5 H13 108.525
H12 C6 H14 108.525
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.400      
2 C 0.398      
3 C -0.507      
4 C -0.507      
5 C -0.438      
6 C -0.438      
7 H 0.254      
8 H 0.254      
9 H 0.247      
10 H 0.247      
11 H 0.222      
12 H 0.222      
13 H 0.223      
14 H 0.223      


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 -2.657 2.657
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.018 -0.306 0.000
y -0.306 -34.618 0.000
z 0.000 0.000 -43.377
Traceless
 xyz
x 3.980 -0.306 0.000
y -0.306 4.580 0.000
z 0.000 0.000 -8.560
Polar
3z2-r2-17.119
x2-y2-0.400
xy-0.306
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.109 0.010 0.000
y 0.010 7.459 0.000
z 0.000 0.000 8.064


<r2> (average value of r2) Å2
<r2> 152.648
(<r2>)1/2 12.355