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All results from a given calculation for CHOCH(CH3)CH3 (Propanal, 2-methyl-)

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-231.775738
Energy at 298.15K-231.784251
HF Energy-231.032498
Nuclear repulsion energy175.458759
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 MP2/6-311G*
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' 3169 3011 23.73      
2 A' 3162 3005 47.49      
3 A' 3116 2961 4.82      
4 A' 3072 2919 15.57      
5 A' 2914 2769 112.58      
6 A' 1781 1693 128.86      
7 A' 1550 1473 23.04      
8 A' 1543 1466 8.65      
9 A' 1456 1384 5.32      
10 A' 1435 1364 3.29      
11 A' 1340 1273 0.38      
12 A' 1212 1152 0.02      
13 A' 1204 1144 8.32      
14 A' 955 908 16.36      
15 A' 864 821 22.19      
16 A' 554 527 5.66      
17 A' 359 341 6.63      
18 A' 337 320 0.18      
19 A' 244 232 0.82      
20 A" 3168 3011 13.07      
21 A" 3157 3000 3.05      
22 A" 3070 2918 22.05      
23 A" 1531 1454 3.14      
24 A" 1523 1447 1.28      
25 A" 1433 1362 8.38      
26 A" 1371 1303 0.43      
27 A" 1164 1106 1.07      
28 A" 1011 961 0.77      
29 A" 968 920 0.27      
30 A" 947 900 1.51      
31 A" 339 322 0.64      
32 A" 215 204 0.03      
33 A" 59 56 5.23      

Unscaled Zero Point Vibrational Energy (zpe) 25111.5 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 23863.4 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 MP2/6-311G*
ABC
0.25736 0.12401 0.09381

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.297 0.556 2.166
H2 0.297 0.556 -2.166
H3 -1.028 1.359 -1.305
H4 -1.028 1.359 1.305
H5 0.596 2.056 1.274
H6 0.596 2.056 -1.274
C7 0.039 1.116 -1.264
C8 0.039 1.116 1.264
H9 1.424 0.031 0.000
C10 0.368 0.317 0.000
C11 -0.432 -0.965 0.000
H12 -1.537 -0.816 0.000
O13 0.039 -2.082 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 H9 C10 C11 H12 O13
H14.33223.80171.77281.77063.76473.48491.09302.49742.18032.74513.15263.4232
H24.33221.77283.80173.76471.77061.09303.48492.49742.18032.74513.15263.4232
H33.80171.77282.61083.12671.76741.09472.79243.07912.17662.73132.58723.8323
H41.77283.80172.61081.76743.12672.79241.09473.07912.17662.73132.58723.8323
H51.77063.76473.12671.76742.54802.76321.09302.53142.16743.43563.79734.3655
H63.76471.77061.76743.12672.54801.09302.76322.53142.16743.43563.79734.3655
C73.48491.09301.09472.79242.76321.09302.52762.16651.53072.47932.79483.4387
C81.09303.48492.79241.09471.09302.76322.52762.16651.53072.47932.79483.4387
H92.49742.49743.07913.07912.53142.53142.16652.16651.09462.10643.08012.5271
C102.18032.18032.17662.17662.16742.16741.53071.53071.09461.51082.21632.4220
C112.74512.74512.73132.73133.43563.43562.47932.47932.10641.51081.11531.2127
H123.15263.15262.58722.58723.79733.79732.79482.79483.08012.21631.11532.0219
O133.42323.42323.83233.83234.36554.36553.43873.43872.52712.42201.21272.0219

picture of Propanal, 2-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C8 H4 108.259 H1 C8 H5 108.186
H1 C8 C10 111.310 H2 C7 H3 108.259
H2 C7 H6 108.186 H2 C7 C10 111.310
H3 C7 H6 107.778 H3 C7 C10 110.905
H4 C8 H5 107.778 H4 C8 C10 110.905
H5 C8 C10 110.283 H6 C7 C10 110.283
C7 C10 C8 111.304 C7 C10 H9 110.112
C7 C10 C11 109.199 C8 C10 H9 110.112
C8 C10 C11 109.199 H9 C10 C11 106.800
C10 C11 H12 114.273 C10 C11 O13 125.210
H12 C11 O13 120.517
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability