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

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-231.712663
Energy at 298.15K-231.721196
HF Energy-230.984179
Nuclear repulsion energy175.400708
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 MP3/6-31G*
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' 3187 2991 24.97      
2 A' 3177 2982 45.19      
3 A' 3132 2939 4.81      
4 A' 3098 2908 14.59      
5 A' 2966 2784 88.41      
6 A' 1888 1772 137.51      
7 A' 1569 1473 17.26      
8 A' 1564 1468 6.87      
9 A' 1482 1391 3.11      
10 A' 1467 1377 3.94      
11 A' 1367 1283 0.85      
12 A' 1229 1154 0.16      
13 A' 1222 1147 9.01      
14 A' 967 908 14.52      
15 A' 875 821 18.79      
16 A' 560 526 7.23      
17 A' 363 341 7.94      
18 A' 341 320 0.18      
19 A' 242 227 0.85      
20 A" 3186 2990 12.41      
21 A" 3172 2978 4.34      
22 A" 3096 2906 18.61      
23 A" 1552 1457 2.87      
24 A" 1548 1453 0.39      
25 A" 1460 1371 5.33      
26 A" 1398 1312 0.53      
27 A" 1183 1110 0.77      
28 A" 1022 959 0.44      
29 A" 982 922 0.47      
30 A" 960 901 1.13      
31 A" 338 317 0.77      
32 A" 221 208 0.04      
33 A" 61 57 6.38      

Unscaled Zero Point Vibrational Energy (zpe) 25437.4 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 23875.5 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 MP3/6-31G*
ABC
0.25665 0.12406 0.09377

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.299 0.555 2.170
H2 0.299 0.555 -2.170
H3 -1.025 1.366 -1.311
H4 -1.025 1.366 1.311
H5 0.605 2.055 1.275
H6 0.605 2.055 -1.275
C7 0.041 1.117 -1.267
C8 0.041 1.117 1.267
H9 1.418 0.024 0.000
C10 0.362 0.315 0.000
C11 -0.438 -0.967 0.000
H12 -1.542 -0.831 0.000
O13 0.041 -2.080 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 H9 C10 C11 H12 O13
H14.33973.81221.77491.77323.77023.49261.09422.49812.18402.75113.16523.4231
H24.33971.77493.81223.77021.77321.09423.49262.49812.18402.75113.16523.4231
H33.81221.77492.62293.13441.77021.09622.80193.08062.17942.74082.61073.8387
H41.77493.81222.62291.77023.13442.80191.09623.08062.17942.74082.61073.8387
H51.77323.77023.13441.77022.55102.76841.09422.53212.17113.44233.81644.3640
H63.77021.77321.77023.13442.55101.09422.76842.53212.17113.44233.81644.3640
C73.49261.09421.09622.80192.76841.09422.53502.16711.53402.48632.81223.4395
C81.09423.49262.80191.09621.09422.76842.53502.16711.53402.48632.81223.4395
H92.49812.49813.08063.08062.53212.53212.16712.16711.09512.10383.08052.5146
C102.18402.18402.17942.17942.17112.17111.53401.53401.09511.51122.22202.4165
C112.75112.75112.74082.74083.44233.44232.48632.48632.10381.51121.11221.2114
H123.16523.16522.61072.61073.81643.81642.81222.81223.08052.22201.11222.0161
O133.42313.42313.83873.83874.36404.36403.43953.43952.51462.41651.21142.0161

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 108.257 H1 C8 H5 108.241
H1 C8 C10 111.297 H2 C7 H3 108.257
H2 C7 H6 108.241 H2 C7 C10 111.297
H3 C7 H6 107.835 H3 C7 C10 110.820
H4 C8 H5 107.835 H4 C8 C10 110.820
H5 C8 C10 110.277 H6 C7 C10 110.277
C7 C10 C8 111.436 C7 C10 H9 109.904
C7 C10 C11 109.462 C8 C10 H9 109.904
C8 C10 C11 109.462 H9 C10 C11 106.549
C10 C11 H12 114.915 C10 C11 O13 124.771
H12 C11 O13 120.314
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability