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All results from a given calculation for CH3COCH2CH3 (2-Butanone)

using model chemistry: MP2=FULL/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C1 1A

Conformer 1 (CS)

Jump to S1C2
Vibrational Frequencies calculated at MP2=FULL/6-311G*
Rotational Constants (cm-1) from geometry optimized at MP2=FULL/6-311G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C1)

Jump to S1C1
Energy calculated at MP2=FULL/6-311G*
 hartrees
Energy at 0K-231.878664
Energy at 298.15K-231.886990
Nuclear repulsion energy176.140541
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 MP2=FULL/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 3207 3038 8.25      
2 A 3194 3025 18.68      
3 A 3185 3017 19.93      
4 A 3165 2997 9.43      
5 A 3115 2950 8.75      
6 A 3097 2933 20.05      
7 A 3083 2920 8.01      
8 A 3071 2909 12.54      
9 A 1783 1688 86.78      
10 A 1540 1458 11.43      
11 A 1536 1454 10.00      
12 A 1515 1435 12.97      
13 A 1508 1428 23.97      
14 A 1497 1417 4.79      
15 A 1454 1377 8.07      
16 A 1427 1352 65.88      
17 A 1401 1326 12.77      
18 A 1311 1242 0.06      
19 A 1217 1153 57.62      
20 A 1154 1093 0.15      
21 A 1133 1073 1.07      
22 A 1027 973 5.13      
23 A 975 924 3.02      
24 A 968 917 7.09      
25 A 786 745 3.16      
26 A 769 728 2.89      
27 A 600 568 8.27      
28 A 473 448 0.25      
29 A 406 384 3.88      
30 A 255 242 4.59      
31 A 218 207 0.11      
32 A 107 101 0.07      
33 A 55 52 0.09      

Unscaled Zero Point Vibrational Energy (zpe) 25115.0 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 23786.4 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 MP2=FULL/6-311G*
ABC
0.31726 0.12054 0.09189

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.883 -0.500 0.032
C2 0.524 0.167 -0.019
C3 -0.679 -0.759 -0.056
C4 -2.006 -0.022 0.046
O5 0.403 1.379 -0.021
H6 2.663 0.243 -0.128
H7 2.026 -0.961 1.014
H8 1.962 -1.295 -0.713
H9 -2.843 -0.722 0.002
H10 -2.069 0.535 0.981
H11 -2.110 0.696 -0.767
H12 -0.620 -1.336 -0.988
H13 -0.569 -1.497 0.748

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 H6 H7 H8 H9 H10 H11 H12 H13
C11.51432.57623.91752.39201.08931.09431.09284.73054.19384.24452.82922.7414
C21.51431.51902.53771.21762.14252.14392.16473.48232.80382.78962.12322.1338
C32.57621.51901.52082.39643.48942.91602.77352.16462.16392.16211.09761.0968
C43.91752.53771.52082.78734.67894.25134.23481.09191.09101.09032.17072.1757
O52.39201.21762.39642.78732.53113.03023.17113.86632.79812.70923.05793.1318
H61.08932.14253.48944.67892.53111.77821.78865.59074.86884.83693.74293.7733
H71.09432.14392.91604.25133.03021.77821.76094.97854.35994.79923.33952.6628
H81.09282.16472.77354.23483.17111.78861.76094.89074.73994.53312.59682.9289
H94.73053.48232.16461.09193.86635.59074.97854.89071.77141.77212.50882.5157
H104.19382.80382.16391.09102.79814.86884.35994.73991.77141.75683.07832.5369
H114.24452.78962.16211.09032.70924.83694.79924.53311.77211.75682.52973.0800
H122.82922.12321.09762.17073.05793.74293.33952.59682.50883.07832.52971.7439
H132.74142.13381.09682.17573.13183.77332.66282.92892.51572.53693.08001.7439

picture of 2-Butanone state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 116.276 C1 C2 O5 121.852
C2 C1 H6 109.675 C2 C1 H7 109.487
C2 C1 H8 111.231 C2 C3 C4 113.195
C2 C3 H12 107.379 C2 C3 H13 108.240
C3 C2 O5 121.870 C3 C4 H9 110.822
C3 C4 H10 110.815 C3 C4 H11 110.710
C4 C3 H12 110.959 C4 C3 H13 111.413
H6 C1 H7 109.041 H6 C1 H8 110.108
H7 C1 H8 107.244 H9 C4 H10 108.486
H9 C4 H11 108.598 H10 C4 H11 107.300
H12 C3 H13 105.258
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability