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 (Methyl cyclopropyl ketone)

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD(T)/cc-pVDZ
 hartrees
Energy at 0K-269.807876
Energy at 298.15K-269.816514
HF Energy-268.851315
Nuclear repulsion energy228.655998
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 QCISD(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' 3260 3107        
2 A' 3183 3034        
3 A' 3172 3024        
4 A' 3153 3005        
5 A' 3044 2901        
6 A' 1775 1692        
7 A' 1492 1422        
8 A' 1455 1387        
9 A' 1418 1351        
10 A' 1370 1305        
11 A' 1218 1161        
12 A' 1193 1137        
13 A' 1102 1050        
14 A' 1059 1010        
15 A' 972 926        
16 A' 926 883        
17 A' 799 762        
18 A' 750 715        
19 A' 585 558        
20 A' 369 352        
21 A' 239 228        
22 A" 3247 3095        
23 A" 3148 3000        
24 A" 3124 2978        
25 A" 1468 1399        
26 A" 1439 1371        
27 A" 1200 1144        
28 A" 1118 1066        
29 A" 1080 1030        
30 A" 1041 992        
31 A" 884 843        
32 A" 829 790        
33 A" 595 567        
34 A" 261 249        
35 A" 157 150        
36 A" 72 69        

Unscaled Zero Point Vibrational Energy (zpe) 26099.3 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 24875.2 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 QCISD(T)/cc-pVDZ
ABC
0.23628 0.08668 0.07576

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.489 -0.548 0.000
C2 -0.281 -0.762 0.000
C3 0.298 -2.171 0.000
C4 0.712 0.369 0.000
C5 0.298 1.638 0.753
C6 0.298 1.638 -0.753
H7 -0.517 -2.913 0.000
H8 0.939 -2.313 -0.892
H9 0.939 -2.313 0.892
H10 1.776 0.101 0.000
H11 -0.676 1.588 1.254
H12 1.088 2.188 1.277
H13 -0.676 1.588 -1.254
H14 1.088 2.188 -1.277

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.22612.41352.38462.92242.92242.55663.13033.13033.32822.60683.96982.60683.9698
C21.22611.52321.50602.58172.58172.16382.16502.16502.23072.69263.49442.69263.4944
C32.41351.52322.57413.88313.88311.10231.10731.10732.71014.08034.61054.08034.6105
C42.38461.50602.57411.53241.53243.50542.83562.83561.09692.23232.25382.23232.2538
C52.92242.58173.88311.53241.50544.68494.32734.00502.26171.09641.09632.23102.2466
C62.92242.58173.88311.53241.50544.68494.00504.32732.26172.23102.24661.09641.0963
H72.55662.16381.10233.50544.68494.68491.80971.80973.78684.67505.49824.67505.4982
H83.13032.16501.10732.83564.32734.00501.80971.78402.70564.73544.99834.23674.5195
H93.13032.16501.10732.83564.00504.32731.80971.78402.70564.23674.51954.73544.9983
H103.32822.23072.71011.09692.26172.26173.78682.70562.70563.12962.54183.12962.5418
H112.60682.69264.08032.23231.09642.23104.67504.73544.23673.12961.86362.50773.1431
H123.96983.49444.61052.25381.09632.24665.49824.99834.51952.54181.86363.14312.5545
H132.60682.69264.08032.23232.23101.09644.67504.23674.73543.12962.50773.14311.8636
H143.96983.49444.61052.25382.24661.09635.49824.51954.99832.54183.14312.55451.8636

picture of Methyl cyclopropyl ketone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 C3 122.395 O1 C2 C4 121.234
C2 C3 H7 109.972 C2 C3 H8 109.767
C2 C3 H9 109.767 C2 C4 C5 116.352
C2 C4 C6 116.352 C2 C4 H10 117.090
C3 C2 C4 116.371 C4 C5 C6 60.582
C4 C5 H11 115.238 C4 C5 H12 117.076
C4 C6 C5 60.582 C4 C6 H13 115.238
C4 C6 H14 117.076 C5 C4 C6 58.836
C5 C4 H10 117.717 C5 C6 H13 117.200
C5 C6 H14 118.587 C6 C4 H10 117.717
C6 C5 H11 117.200 C6 C5 H12 118.587
H7 C3 H8 109.981 H7 C3 H9 109.981
H8 C3 H9 107.332 H11 C5 H12 116.411
H13 C6 H14 116.411
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability