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All results from a given calculation for C5H8O (Cyclopentanone)

using model chemistry: B3PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-268.999281
Energy at 298.15K-269.008937
HF Energy-268.999281
Nuclear repulsion energy233.952035
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 B3PW91/3-21G
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 3144 3022 6.38      
2 A 3137 3016 11.84      
3 A 3074 2955 17.10      
4 A 3058 2939 5.86      
5 A 1787 1718 146.56      
6 A 1549 1489 3.28      
7 A 1493 1435 0.34      
8 A 1369 1315 0.02      
9 A 1332 1281 8.67      
10 A 1257 1208 0.09      
11 A 1187 1141 0.03      
12 A 1053 1012 1.01      
13 A 1004 965 0.61      
14 A 906 871 0.86      
15 A 813 782 0.05      
16 A 712 684 1.06      
17 A 565 543 5.48      
18 A 238 229 0.07      
19 B 3149 3027 21.93      
20 B 3139 3017 13.61      
21 B 3080 2960 26.58      
22 B 3057 2938 3.49      
23 B 1540 1480 9.34      
24 B 1493 1435 29.34      
25 B 1369 1316 0.22      
26 B 1336 1284 1.48      
27 B 1284 1234 0.26      
28 B 1211 1164 0.24      
29 B 1127 1083 85.48      
30 B 982 943 21.54      
31 B 951 914 1.15      
32 B 857 824 19.78      
33 B 591 568 3.02      
34 B 477 459 0.58      
35 B 449 432 6.03      
36 B 100 96 4.56      

Unscaled Zero Point Vibrational Energy (zpe) 26933.5 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 25888.5 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 B3PW91/3-21G
ABC
0.21971 0.10971 0.07920

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 2.157
C2 0.000 0.000 0.930
C3 0.000 1.244 0.023
C4 0.000 -1.244 0.023
C5 0.317 0.709 -1.385
C6 -0.317 -0.709 -1.385
H7 -1.014 1.671 0.051
H8 1.014 -1.671 0.051
H9 0.696 1.999 0.401
H10 -0.696 -1.999 0.401
H11 -0.080 1.345 -2.181
H12 0.080 -1.345 -2.181
H13 1.403 0.622 -1.515
H14 -1.403 -0.622 -1.515

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.22692.46942.46943.62613.62612.87282.87282.75012.75014.54224.54223.97953.9795
C21.22691.53901.53902.44182.44182.14282.14282.18142.18143.39023.39022.88662.8866
C32.46941.53902.48731.53962.42841.10073.08591.09383.33742.20813.40122.17302.7955
C42.46941.53902.48732.42841.53963.08591.10073.33741.09383.40122.20812.79552.1730
C53.62612.44181.53962.42841.55302.18172.86582.23513.39781.09352.21561.09752.1784
C63.62612.44182.42841.53961.55302.86582.18173.39782.23512.21561.09352.17841.0975
H72.87282.14281.10073.08592.18172.86583.90891.77573.69972.44143.90863.06532.8036
H82.87282.14283.08591.10072.86582.18173.90893.69971.77573.90862.44142.80363.0653
H92.75012.18141.09383.33742.23513.39781.77573.69974.23252.77374.26902.46273.8653
H102.75012.18143.33741.09383.39782.23513.69971.77574.23254.26902.77373.86532.4627
H114.54223.39022.20813.40121.09352.21562.44143.90862.77374.26902.69551.77972.4623
H124.54223.39023.40122.20812.21561.09353.90862.44144.26902.77372.69552.46231.7797
H133.97952.88662.17302.79551.09752.17843.06532.80362.46273.86531.77972.46233.0693
H143.97952.88662.79552.17302.17841.09752.80363.06533.86532.46272.46231.77973.0693

picture of Cyclopentanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 126.089 O1 C2 C4 126.089
C2 C3 C5 104.965 C2 C3 H7 107.379
C2 C3 H9 110.769 C2 C4 C6 104.965
C2 C4 H8 107.379 C2 C4 H10 110.769
C3 C2 C4 107.823 C3 C5 C6 103.482
C3 C5 H11 112.884 C3 C5 H13 109.842
C4 C6 C5 103.482 C4 C6 H12 112.884
C4 C6 H14 109.842 C5 C3 H7 110.338
C5 C3 H9 115.107 C5 C6 H12 112.531
C5 C6 H14 109.349 C6 C4 H8 110.338
C6 C4 H10 115.107 C6 C5 H11 112.531
C6 C5 H13 109.349 H7 C3 H9 108.030
H8 C4 H10 108.030 H11 C5 H13 108.639
H12 C6 H14 108.639
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.456      
2 C 0.457      
3 C -0.513      
4 C -0.513      
5 C -0.438      
6 C -0.438      
7 H 0.253      
8 H 0.253      
9 H 0.250      
10 H 0.250      
11 H 0.224      
12 H 0.224      
13 H 0.224      
14 H 0.224      


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 -2.779 2.779
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.016 -0.248 0.000
y -0.248 -34.694 0.000
z 0.000 0.000 -43.825
Traceless
 xyz
x 4.243 -0.248 0.000
y -0.248 4.727 0.000
z 0.000 0.000 -8.970
Polar
3z2-r2-17.940
x2-y2-0.322
xy-0.248
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.978 0.028 0.000
y 0.028 7.302 0.000
z 0.000 0.000 7.983


<r2> (average value of r2) Å2
<r2> 154.235
(<r2>)1/2 12.419