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: wB97X-D/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at wB97X-D/6-311G**
 hartrees
Energy at 0K-270.559070
Energy at 298.15K-270.568767
HF Energy-270.559070
Nuclear repulsion energy235.849027
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 wB97X-D/6-311G**
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 3133 2996 10.37      
2 A 3126 2990 17.56      
3 A 3061 2928 25.98      
4 A 3056 2924 2.33      
5 A 1872 1791 254.79      
6 A 1520 1454 2.43      
7 A 1460 1396 0.09      
8 A 1353 1294 0.06      
9 A 1317 1260 2.42      
10 A 1227 1173 0.06      
11 A 1187 1135 0.37      
12 A 1050 1004 0.70      
13 A 974 932 0.23      
14 A 913 873 0.69      
15 A 823 787 0.95      
16 A 721 690 0.97      
17 A 574 549 5.33      
18 A 240 229 0.12      
19 B 3137 3000 34.46      
20 B 3128 2992 23.30      
21 B 3066 2932 41.56      
22 B 3056 2923 8.33      
23 B 1505 1439 6.75      
24 B 1460 1397 23.91      
25 B 1347 1288 1.27      
26 B 1308 1251 11.88      
27 B 1269 1214 2.82      
28 B 1181 1130 9.22      
29 B 1168 1117 68.23      
30 B 983 940 12.64      
31 B 934 894 0.92      
32 B 855 818 10.70      
33 B 594 568 2.74      
34 B 481 460 3.89      
35 B 460 440 5.16      
36 B 108 104 5.15      

Unscaled Zero Point Vibrational Energy (zpe) 26822.8 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 25656.0 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 wB97X-D/6-311G**
ABC
0.22192 0.11219 0.08054

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 2.125
C2 0.000 0.000 0.926
C3 0.000 1.238 0.031
C4 0.000 -1.238 0.031
C5 0.300 0.709 -1.376
C6 -0.300 -0.709 -1.376
H7 -1.004 1.676 0.083
H8 1.004 -1.676 0.083
H9 0.701 1.985 0.407
H10 -0.701 -1.985 0.407
H11 -0.110 1.339 -2.168
H12 0.110 -1.339 -2.168
H13 1.382 0.651 -1.528
H14 -1.382 -0.651 -1.528

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.19942.43312.43313.58473.58472.82622.82622.71702.71704.49794.49793.95983.9598
C21.19941.52791.52792.42712.42712.12752.12752.16782.16783.37243.37242.89062.8906
C32.43311.52792.47671.53252.42131.09613.08251.09073.31982.20343.38912.16482.8123
C42.43311.52792.47672.42131.53253.08251.09613.31981.09073.38912.20342.81232.1648
C53.58472.42711.53252.42131.54042.18192.88302.22843.38201.09102.20401.09472.1686
C63.58472.42712.42131.53251.54042.88302.18193.38202.22842.20401.09102.16861.0947
H72.82622.12751.09613.08252.18192.88303.90661.76243.68722.44483.92293.05592.8548
H82.82622.12753.08251.09612.88302.18193.90663.68721.76243.92292.44482.85483.0559
H92.71702.16781.09073.31982.22843.38201.76243.68724.20962.77544.24532.44723.8767
H102.71702.16783.31981.09073.38202.22843.68721.76244.20964.24532.77543.87672.4472
H114.49793.37242.20343.38911.09102.20402.44483.92292.77544.24532.68621.76302.4467
H124.49793.37243.38912.20342.20401.09103.92292.44484.24532.77542.68622.44671.7630
H133.95982.89062.16482.81231.09472.16863.05592.85482.44723.87671.76302.44673.0557
H143.95982.89062.81232.16482.16861.09472.85483.05593.87672.44722.44671.76303.0557

picture of Cyclopentanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 125.856 O1 C2 C4 125.856
C2 C3 C5 104.947 C2 C3 H7 107.197
C2 C3 H9 110.644 C2 C4 C6 104.947
C2 C4 H8 107.197 C2 C4 H10 110.644
C3 C2 C4 108.287 C3 C5 C6 103.989
C3 C5 H11 113.177 C3 C5 H13 109.854
C4 C6 C5 103.989 C4 C6 H12 113.177
C4 C6 H14 109.854 C5 C3 H7 111.122
C5 C3 H9 115.283 C5 C6 H12 112.649
C5 C6 H14 109.607 C6 C4 H8 111.122
C6 C4 H10 115.283 C6 C5 H11 112.649
C6 C5 H13 109.607 H7 C3 H9 107.397
H8 C4 H10 107.397 H11 C5 H13 107.528
H12 C6 H14 107.528
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.299      
2 C 0.204      
3 C -0.269      
4 C -0.269      
5 C -0.260      
6 C -0.260      
7 H 0.154      
8 H 0.154      
9 H 0.156      
10 H 0.156      
11 H 0.135      
12 H 0.135      
13 H 0.132      
14 H 0.132      


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 -2.997 2.997
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.037 -0.214 0.000
y -0.214 -34.980 0.000
z 0.000 0.000 -44.401
Traceless
 xyz
x 4.653 -0.214 0.000
y -0.214 4.738 0.000
z 0.000 0.000 -9.392
Polar
3z2-r2-18.784
x2-y2-0.057
xy-0.214
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.778 0.060 0.000
y 0.060 8.348 0.000
z 0.000 0.000 8.922


<r2> (average value of r2) Å2
<r2> 152.377
(<r2>)1/2 12.344