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All results from a given calculation for C5H8O (Cyclopentanone)

using model chemistry: CCSD(T)/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at CCSD(T)/cc-pVDZ
 hartrees
Energy at 0K-269.838728
Energy at 298.15K-269.848311
HF Energy-268.882142
Nuclear repulsion energy233.742890
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 CCSD(T)/cc-pVDZ
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 3130 3064        
2 A 3115 3049        
3 A 3047 2982        
4 A 3047 2982        
5 A 1817 1779        
6 A 1494 1463        
7 A 1437 1407        
8 A 1342 1313        
9 A 1302 1274        
10 A 1218 1192        
11 A 1174 1150        
12 A 1038 1016        
13 A 958 938        
14 A 911 891        
15 A 819 802        
16 A 712 697        
17 A 554 542        
18 A 249 244        
19 B 3132 3065        
20 B 3119 3053        
21 B 3050 2985        
22 B 3046 2982        
23 B 1478 1447        
24 B 1439 1409        
25 B 1337 1309        
26 B 1297 1269        
27 B 1245 1219        
28 B 1170 1145        
29 B 1150 1126        
30 B 972 952        
31 B 915 896        
32 B 850 832        
33 B 573 561        
34 B 464 454        
35 B 444 434        
36 B 87 85        

Unscaled Zero Point Vibrational Energy (zpe) 26565.0 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 26001.9 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 CCSD(T)/cc-pVDZ
ABC
0.21811 0.11019 0.07939

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 2.147
C2 0.000 0.000 0.930
C3 0.000 1.249 0.025
C4 0.000 -1.249 0.025
C5 0.323 0.704 -1.381
C6 -0.323 -0.704 -1.381
H7 -1.024 1.676 0.055
H8 1.024 -1.676 0.055
H9 0.693 2.017 0.411
H10 -0.693 -2.017 0.411
H11 -0.047 1.349 -2.198
H12 0.047 -1.349 -2.198
H13 1.421 0.606 -1.502
H14 -1.421 -0.606 -1.502

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.21702.46242.46243.61203.61202.86912.86912.75002.75004.54964.54963.96253.9625
C21.21701.54251.54252.43732.43732.14982.14982.19502.19503.40663.40662.88112.8811
C32.46241.54252.49811.54192.42831.10993.09891.10403.36112.22533.41962.18312.7913
C42.46241.54252.49812.42831.54193.09891.10993.36111.10403.41962.22532.79132.1831
C53.61202.43731.54192.42831.55022.19582.86672.25183.41321.10462.22731.10922.1852
C63.61202.43732.42831.54191.55022.86672.19583.41322.25182.22731.10462.18521.1092
H72.86912.14981.10993.09892.19582.86673.92761.78643.72452.47733.92083.09052.7903
H82.86912.14983.09891.10992.86672.19583.92763.72451.78643.92082.47732.79033.0905
H92.75002.19501.10403.36112.25183.41321.78643.72454.26552.79264.30752.48653.8739
H102.75002.19503.36111.10403.41322.25183.72451.78644.26554.30752.79263.87392.4865
H114.54963.40662.22533.41961.10462.22732.47733.92082.79264.30752.70021.78712.4889
H124.54963.40663.41962.22532.22731.10463.92082.47734.30752.79262.70022.48891.7871
H133.96252.88112.18312.79131.10922.18523.09052.79032.48653.87391.78712.48893.0902
H143.96252.88112.79132.18312.18521.10922.79033.09053.87392.48652.48891.78713.0902

picture of Cyclopentanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 125.926 O1 C2 C4 125.926
C2 C3 C5 104.412 C2 C3 H7 107.163
C2 C3 H9 110.989 C2 C4 C6 104.412
C2 C4 H8 107.163 C2 C4 H10 110.989
C3 C2 C4 108.149 C3 C5 C6 103.505
C3 C5 H11 113.427 C3 C5 H13 109.789
C4 C6 C5 103.505 C4 C6 H12 113.427
C4 C6 H14 109.789 C5 C3 H7 110.745
C5 C3 H9 115.658 C5 C6 H12 112.994
C5 C6 H14 109.395 C6 C4 H8 110.745
C6 C4 H10 115.658 C6 C5 H11 112.994
C6 C5 H13 109.395 H7 C3 H9 107.586
H8 C4 H10 107.586 H11 C5 H13 107.661
H12 C6 H14 107.661
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability