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: CID/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 CID/3-21G*
 hartrees
Energy at 0K-267.838457
Energy at 298.15K-267.847356
HF Energy-267.325294
Nuclear repulsion energy230.083420
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 CID/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' 3357 3123 3.86      
2 A' 3304 3074 3.48      
3 A' 3258 3032 5.52      
4 A' 3238 3013 9.89      
5 A' 3132 2914 2.04      
6 A' 1821 1694 62.75      
7 A' 1587 1477 5.41      
8 A' 1581 1471 12.22      
9 A' 1499 1395 26.96      
10 A' 1468 1366 74.15      
11 A' 1255 1168 106.01      
12 A' 1236 1150 2.53      
13 A' 1177 1095 8.29      
14 A' 1162 1081 11.18      
15 A' 1027 956 42.32      
16 A' 920 856 23.12      
17 A' 859 799 1.94      
18 A' 786 731 0.16      
19 A' 610 568 9.45      
20 A' 395 367 5.47      
21 A' 261 242 5.27      
22 A" 3341 3109 0.45      
23 A" 3252 3026 8.57      
24 A" 3190 2968 7.48      
25 A" 1601 1490 12.44      
26 A" 1561 1453 5.97      
27 A" 1285 1196 0.02      
28 A" 1222 1137 0.08      
29 A" 1212 1128 7.46      
30 A" 1148 1068 5.35      
31 A" 962 896 0.63      
32 A" 853 794 6.34      
33 A" 665 619 1.62      
34 A" 282 262 0.20      
35 A" 157 146 0.13      
36 A" 68 63 2.14      

Unscaled Zero Point Vibrational Energy (zpe) 27364.5 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 25462.7 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 CID/3-21G*
ABC
0.23753 0.08823 0.07700

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.320 -0.854 0.000
C2 -0.091 -0.794 0.000
C3 0.789 -2.033 0.000
C4 0.618 0.516 0.000
C5 -0.091 1.645 0.753
C6 -0.091 1.645 -0.753
H7 0.159 -2.920 0.000
H8 1.431 -2.035 -0.884
H9 1.431 -2.035 0.884
H10 1.696 0.489 0.000
H11 -1.009 1.364 1.244
H12 0.525 2.365 1.269
H13 -1.009 1.364 -1.244
H14 0.525 2.365 -1.269

Atom - Atom Distances (Å)
  O1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
O11.23072.41602.37392.88562.88562.54043.12113.12113.30112.56223.92182.56223.9218
C21.23071.51971.49002.55302.55302.14062.15312.15312.19922.65493.45992.65493.4599
C32.41601.51972.55563.85673.85671.08771.09241.09242.68044.04024.58574.04024.5857
C42.37391.49002.55561.53101.53103.46712.82002.82001.07762.21682.24432.21682.2443
C52.88562.55303.85671.53101.50634.63384.30593.98462.25711.07891.07872.21622.2330
C62.88562.55303.85671.53101.50634.63383.98464.30592.25712.21622.23301.07891.0787
H72.54042.14061.08773.46714.63384.63381.78381.78383.73944.61135.44794.61135.4479
H83.12112.15311.09242.82004.30593.98461.78381.76822.68774.69424.98194.19964.5091
H93.12112.15311.09242.82003.98464.30591.78381.76822.68774.19964.50914.69424.9819
H103.30112.19922.68041.07762.25712.25713.73942.68772.68773.10302.54953.10302.5495
H112.56222.65494.04022.21681.07892.21624.61134.69424.19963.10301.83252.48803.1099
H123.92183.45994.58572.24431.07872.23305.44794.98194.50912.54951.83253.10992.5376
H132.56222.65494.04022.21682.21621.07894.61134.19964.69423.10302.48803.10991.8325
H143.92183.45994.58572.24432.23301.07875.44794.50914.98192.54953.10992.53761.8325

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 122.557 O1 C2 C4 121.213
C2 C3 H7 109.237 C2 C3 H8 109.955
C2 C3 H9 109.955 C2 C4 C5 115.357
C2 C4 C6 115.357 C2 C4 H10 116.949
C3 C2 C4 116.229 C4 C5 C6 60.532
C4 C5 H11 115.198 C4 C5 H12 117.578
C4 C6 C5 60.532 C4 C6 H13 115.198
C4 C6 H14 117.578 C5 C4 C6 58.937
C5 C4 H10 118.791 C5 C6 H13 117.061
C5 C6 H14 118.554 C6 C4 H10 118.791
C6 C5 H11 117.061 C6 C5 H12 118.554
H7 C3 H8 109.813 H7 C3 H9 109.813
H8 C3 H9 108.055 H11 C5 H12 116.281
H13 C6 H14 116.281
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability