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All results from a given calculation for C5H8O (Methyl cyclopropyl ketone)

using model chemistry: QCISD/3-21G*

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/3-21G*
 hartrees
Energy at 0K-267.945090
Energy at 298.15K-267.953786
HF Energy-267.321684
Nuclear repulsion energy228.100538
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/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' 3252 3126 5.38      
2 A' 3199 3074 4.04      
3 A' 3154 3031 5.86      
4 A' 3131 3009 11.15      
5 A' 3028 2910 3.13      
6 A' 1692 1626 38.54      
7 A' 1543 1483 8.26      
8 A' 1528 1469 10.28      
9 A' 1448 1391 19.94      
10 A' 1407 1353 63.88      
11 A' 1206 1159 100.87      
12 A' 1186 1139 2.62      
13 A' 1131 1087 8.33      
14 A' 1114 1071 6.37      
15 A' 983 945 41.40      
16 A' 871 837 17.06      
17 A' 829 797 2.84      
18 A' 752 723 0.18      
19 A' 582 559 7.42      
20 A' 380 365 4.84      
21 A' 252 242 4.70      
22 A" 3237 3111 0.35      
23 A" 3150 3027 9.44      
24 A" 3086 2966 8.97      
25 A" 1557 1497 10.59      
26 A" 1513 1454 5.12      
27 A" 1242 1194 0.01      
28 A" 1173 1127 2.63      
29 A" 1164 1119 3.87      
30 A" 1104 1061 4.51      
31 A" 923 887 1.22      
32 A" 808 776 4.86      
33 A" 635 611 1.23      
34 A" 269 259 0.17      
35 A" 153 147 0.13      
36 A" 63 61 1.90      

Unscaled Zero Point Vibrational Energy (zpe) 26371.5 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 25345.7 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/3-21G*
ABC
0.23266 0.08700 0.07583

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.337 -0.852 0.000
C2 -0.089 -0.798 0.000
C3 0.792 -2.052 0.000
C4 0.630 0.519 0.000
C5 -0.089 1.656 0.761
C6 -0.089 1.656 -0.761
H7 0.150 -2.941 0.000
H8 1.438 -2.057 -0.891
H9 1.438 -2.057 0.891
H10 1.715 0.492 0.000
H11 -1.014 1.366 1.252
H12 0.527 2.384 1.280
H13 -1.014 1.366 -1.252
H14 0.527 2.384 -1.280

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.24912.44372.39802.90292.90292.56373.15323.15323.33552.56703.94842.56703.9484
C21.24911.53221.50112.56942.56942.15542.16982.16982.21872.66563.48542.66563.4854
C32.44371.53222.57633.88623.88621.09611.10051.10052.70674.06314.62474.06314.6247
C42.39801.50112.57631.54511.54513.49292.84282.84281.08582.23312.26442.23312.2644
C52.90292.56943.88621.54511.52144.66504.34074.01622.27791.08691.08652.23382.2531
C62.90292.56943.88621.54511.52144.66504.01624.34072.27792.23382.25311.08691.0865
H72.56372.15541.09613.49294.66504.66501.79801.79803.77284.63305.48934.63305.4893
H83.15322.16981.10052.84284.34074.01621.79801.78262.71464.72395.02644.22534.5497
H93.15322.16981.10052.84284.01624.34071.79801.78262.71464.22534.54974.72395.0264
H103.33552.21872.70671.08582.27792.27793.77282.71462.71463.12752.57483.12752.5748
H112.56702.66564.06312.23311.08692.23384.63304.72394.22533.12751.84812.50323.1345
H123.94843.48544.62472.26441.08652.25315.48935.02644.54972.57481.84813.13452.5607
H132.56702.66564.06312.23312.23381.08694.63304.22534.72393.12752.50323.13451.8481
H143.94843.48544.62472.26442.25311.08655.48934.54975.02642.57483.13452.56071.8481

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 122.630 O1 C2 C4 121.097
C2 C3 H7 109.056 C2 C3 H8 109.922
C2 C3 H9 109.922 C2 C4 C5 115.007
C2 C4 C6 115.007 C2 C4 H10 117.203
C3 C2 C4 116.273 C4 C5 C6 60.507
C4 C5 H11 114.968 C4 C5 H12 117.675
C4 C6 C5 60.507 C4 C6 H13 114.968
C4 C6 H14 117.675 C5 C4 C6 58.986
C5 C4 H10 118.912 C5 C6 H13 116.848
C5 C6 H14 118.574 C6 C4 H10 118.912
C6 C5 H11 116.848 C6 C5 H12 118.574
H7 C3 H8 109.879 H7 C3 H9 109.879
H8 C3 H9 108.174 H11 C5 H12 116.489
H13 C6 H14 116.489
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability