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

using model chemistry: B3LYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/6-31G(2df,p)
 hartrees
Energy at 0K-232.489697
Energy at 298.15K 
HF Energy-232.489697
Nuclear repulsion energy175.813654
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 B3LYP/6-31G(2df,p)
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' 3152 3042 10.40      
2 A' 3122 3013 21.35      
3 A' 3051 2944 20.61      
4 A' 3037 2930 7.57      
5 A' 3015 2909 15.98      
6 A' 1814 1751 132.32      
7 A' 1498 1445 7.02      
8 A' 1466 1414 15.42      
9 A' 1449 1398 3.43      
10 A' 1411 1362 3.47      
11 A' 1383 1334 36.12      
12 A' 1367 1319 11.04      
13 A' 1187 1145 76.19      
14 A' 1106 1067 1.34      
15 A' 1000 965 2.46      
16 A' 936 903 12.66      
17 A' 759 732 2.78      
18 A' 586 565 8.70      
19 A' 398 384 3.95      
20 A' 245 236 4.84      
21 A" 3127 3018 21.18      
22 A" 3096 2988 10.15      
23 A" 3041 2934 9.32      
24 A" 1492 1440 5.29      
25 A" 1478 1426 7.71      
26 A" 1280 1235 0.02      
27 A" 1132 1093 0.36      
28 A" 947 914 3.53      
29 A" 752 725 2.74      
30 A" 476 459 0.06      
31 A" 193 186 0.18      
32 A" 112 108 0.00      
33 A" 7i 7i 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 24548.8 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 23689.6 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 B3LYP/6-31G(2df,p)
ABC
0.31848 0.11935 0.09118

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.062 1.642 0.000
C2 0.000 0.555 0.000
C3 0.508 -0.883 0.000
C4 -0.606 -1.926 0.000
O5 -1.181 0.816 0.000
H6 0.588 2.624 0.000
H7 1.709 1.545 0.880
H8 1.709 1.545 -0.880
H9 -0.191 -2.938 0.000
H10 -1.245 -1.813 0.880
H11 -1.245 -1.813 -0.880
H12 1.168 -1.005 -0.871
H13 1.168 -1.005 0.871

Atom - Atom Distances (Å)
  C1 C2 C3 C4 O5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52012.58493.93872.39031.09061.09591.09594.74794.24684.24682.78832.7883
C21.52011.52472.55351.20952.15132.16212.16213.49742.81612.81612.13402.1340
C32.58491.52471.52642.39593.50782.84802.84802.17042.17102.17101.09911.0991
C43.93872.55351.52642.80174.70404.26404.26401.09361.09291.09292.18032.1803
O52.39031.20952.39592.80172.52933.10723.10723.88222.77342.77343.09703.0970
H61.09062.15133.50784.70402.52931.78691.78695.61594.88094.88093.77663.7766
H71.09592.16212.84804.26403.10721.78691.75944.94764.47264.80613.14002.6069
H81.09592.16212.84804.26403.10721.78691.75944.94764.80614.47262.60693.1400
H94.74793.49742.17041.09363.88225.61594.94764.94761.77461.77462.51792.5179
H104.24682.81612.17101.09292.77344.88094.47264.80611.77461.75913.08852.5447
H114.24682.81612.17101.09292.77344.88094.80614.47261.77461.75912.54473.0885
H122.78832.13401.09912.18033.09703.77663.14002.60692.51793.08852.54471.7413
H132.78832.13401.09912.18033.09703.77662.60693.14002.51792.54473.08851.7413

picture of 2-Butanone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 116.194 C1 C2 O5 121.839
C2 C1 H6 109.894 C2 C1 H7 110.434
C2 C1 H8 110.434 C2 C3 C4 113.631
C2 C3 H12 107.741 C2 C3 H13 107.741
C3 C2 O5 121.967 C3 C4 H9 110.788
C3 C4 H10 110.875 C3 C4 H11 110.875
C4 C3 H12 111.243 C4 C3 H13 111.243
H6 C1 H7 109.622 H6 C1 H8 109.622
H7 C1 H8 106.782 H9 C4 H10 108.503
H9 C4 H11 108.503 H10 C4 H11 107.178
H12 C3 H13 104.774
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability