return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C5H8O (Cyclopentanone)

using model chemistry: LSDA/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-269.210832
Energy at 298.15K-269.220367
HF Energy-269.210832
Nuclear repulsion energy237.389936
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/cc-pVTZ
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 3049 3015 3.71      
2 A 3037 3004 13.75      
3 A 2968 2936 17.99      
4 A 2956 2923 1.83      
5 A 1814 1794 233.67      
6 A 1430 1414 4.47      
7 A 1364 1349 0.09      
8 A 1285 1271 0.03      
9 A 1252 1239 6.58      
10 A 1169 1156 1.10      
11 A 1145 1133 0.00      
12 A 1026 1015 0.83      
13 A 921 911 1.57      
14 A 905 895 0.10      
15 A 812 803 2.03      
16 A 696 688 0.67      
17 A 549 543 6.80      
18 A 237 234 0.20      
19 B 3048 3015 4.97      
20 B 3041 3008 16.09      
21 B 2976 2944 30.14      
22 B 2957 2925 0.42      
23 B 1418 1402 9.92      
24 B 1363 1348 30.23      
25 B 1293 1279 2.86      
26 B 1241 1227 15.54      
27 B 1209 1195 15.09      
28 B 1145 1132 69.44      
29 B 1113 1101 2.53      
30 B 966 955 11.67      
31 B 888 879 0.77      
32 B 829 820 13.44      
33 B 572 566 2.64      
34 B 464 459 5.54      
35 B 437 432 1.76      
36 B 112 111 5.06      

Unscaled Zero Point Vibrational Energy (zpe) 25841.3 cm-1
Scaled (by 0.9891) Zero Point Vibrational Energy (zpe) 25559.6 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/cc-pVTZ
ABC
0.22666 0.11346 0.08196

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 2.116
C2 0.000 0.000 0.911
C3 0.000 1.220 0.024
C4 0.000 -1.220 0.024
C5 0.309 0.695 -1.361
C6 -0.309 -0.695 -1.361
H7 -1.023 1.637 0.069
H8 1.023 -1.637 0.069
H9 0.671 1.994 0.419
H10 -0.671 -1.994 0.419
H11 -0.068 1.334 -2.171
H12 0.068 -1.334 -2.171
H13 1.401 0.613 -1.494
H14 -1.401 -0.613 -1.494

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.20472.42222.42223.55943.55942.81352.81352.70342.70344.49004.49003.92083.9208
C21.20471.50891.50892.39642.39642.10602.10602.16092.16093.35903.35902.85042.8504
C32.42221.50892.44021.51262.38371.10543.03501.09803.30712.19833.36792.15282.7616
C42.42221.50892.44022.38371.51263.03501.10543.30711.09803.36792.19832.76162.1528
C53.55942.39641.51262.38371.52232.16932.82752.23243.37071.09802.19831.10262.1574
C63.55942.39642.38371.51261.52232.82752.16933.37072.23242.19831.09802.15741.1026
H72.81352.10601.10543.03502.16932.82753.86051.76633.66462.45373.87723.06042.7659
H82.81352.10603.03501.10542.82752.16933.86053.66461.76633.87722.45372.76593.0604
H92.70342.16091.09803.30712.23243.37071.76633.66464.20802.77234.25952.46933.8405
H102.70342.16093.30711.09803.37072.23243.66461.76634.20804.25952.77233.84052.4693
H114.49003.35902.19833.36791.09802.19832.45373.87722.77234.25952.67141.77032.4546
H124.49003.35903.36792.19832.19831.09803.87722.45374.25952.77232.67142.45461.7703
H133.92082.85042.15282.76161.10262.15743.06042.76592.46933.84051.77032.45463.0580
H143.92082.85042.76162.15282.15741.10262.76593.06043.84052.46932.45461.77033.0580

picture of Cyclopentanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 126.038 O1 C2 C4 126.038
C2 C3 C5 104.956 C2 C3 H7 106.302
C2 C3 H9 110.998 C2 C4 C6 104.956
C2 C4 H8 106.302 C2 C4 H10 110.998
C3 C2 C4 107.923 C3 C5 C6 103.523
C3 C5 H11 113.773 C3 C5 H13 109.814
C4 C6 C5 103.523 C4 C6 H12 113.773
C4 C6 H14 109.814 C5 C3 H7 110.957
C5 C3 H9 116.654 C5 C6 H12 113.066
C5 C6 H14 109.507 C6 C4 H8 110.957
C6 C4 H10 116.654 C6 C5 H11 113.066
C6 C5 H13 109.507 H7 C3 H9 106.572
H8 C4 H10 106.572 H11 C5 H13 107.116
H12 C6 H14 107.116
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.219      
2 C 0.138      
3 C -0.233      
4 C -0.233      
5 C -0.229      
6 C -0.229      
7 H 0.135      
8 H 0.135      
9 H 0.131      
10 H 0.131      
11 H 0.121      
12 H 0.121      
13 H 0.116      
14 H 0.116      


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 -3.045 3.045
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.345 -0.259 0.000
y -0.259 -35.137 0.000
z 0.000 0.000 -44.582
Traceless
 xyz
x 4.514 -0.259 0.000
y -0.259 4.827 0.000
z 0.000 0.000 -9.341
Polar
3z2-r2-18.682
x2-y2-0.208
xy-0.259
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.414 0.076 0.000
y 0.076 9.273 0.000
z 0.000 0.000 9.775


<r2> (average value of r2) Å2
<r2> 150.609
(<r2>)1/2 12.272