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

using model chemistry: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-231.373341
Energy at 298.15K-231.381848
HF Energy-230.875564
Nuclear repulsion energy172.921664
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 MP2/6-31G
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' 3151 3014 32.06      
2 A' 3142 3006 53.69      
3 A' 3078 2945 9.05      
4 A' 3054 2923 17.93      
5 A' 2959 2831 96.39      
6 A' 1631 1561 65.14      
7 A' 1579 1511 16.97      
8 A' 1576 1508 3.52      
9 A' 1488 1424 2.14      
10 A' 1440 1378 1.03      
11 A' 1371 1312 1.59      
12 A' 1235 1182 0.12      
13 A' 1225 1172 6.53      
14 A' 950 909 19.04      
15 A' 862 824 18.13      
16 A' 547 523 5.23      
17 A' 356 341 7.60      
18 A' 343 328 0.56      
19 A' 234 223 0.71      
20 A" 3148 3012 14.42      
21 A" 3136 3001 5.66      
22 A" 3054 2922 23.80      
23 A" 1566 1498 3.42      
24 A" 1563 1495 0.17      
25 A" 1469 1406 4.48      
26 A" 1400 1340 1.29      
27 A" 1162 1112 1.98      
28 A" 1012 968 0.20      
29 A" 982 939 0.53      
30 A" 962 920 1.47      
31 A" 336 321 0.68      
32 A" 217 207 0.03      
33 A" 61 58 6.20      

Unscaled Zero Point Vibrational Energy (zpe) 25143.1 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 24056.9 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 MP2/6-31G
ABC
0.25151 0.11981 0.09083

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.219 0.608 2.186
H2 -0.219 0.608 -2.186
H3 -1.722 0.173 -1.330
H4 -1.722 0.173 1.330
H5 -1.123 1.849 1.281
H6 -1.123 1.849 -1.281
C7 -0.816 0.795 -1.282
C8 -0.816 0.795 1.282
H9 0.929 1.068 0.000
C10 0.000 0.477 0.000
C11 0.418 -0.984 0.000
H12 -0.416 -1.716 0.000
O13 1.612 -1.389 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 H9 C10 C11 H12 O13
H14.37173.84831.78431.78203.79163.52391.09872.51122.20072.77813.19673.4809
H24.37171.78433.84833.79161.78201.09873.52392.51122.20072.77813.19673.4809
H33.84831.78432.65933.16021.78131.10062.83393.09812.19712.77262.65343.9144
H41.78433.84832.65931.78133.16022.83391.10063.09812.19712.77262.65343.9144
H51.78203.79163.16021.78132.56222.78881.09862.54182.18743.47003.85364.4274
H63.79161.78201.78133.16022.56221.09862.78882.54182.18743.47003.85364.4274
C73.52391.09871.10062.83392.78881.09862.56452.18211.55242.51562.84703.5074
C81.09873.52392.83391.10061.09862.78882.56452.18211.55242.51562.84703.5074
H92.51122.51123.09813.09812.54182.54182.18212.18211.10082.11393.09142.5494
C102.20072.20072.19712.19712.18742.18741.55241.55241.10081.51932.23192.4653
C112.77812.77812.77262.77263.47003.47002.51562.51562.11391.51931.11011.2604
H123.19673.19672.65342.65343.85363.85362.84702.84703.09142.23191.11012.0541
O133.48093.48093.91443.91444.42744.42743.50743.50742.54942.46531.26042.0541

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 108.445 H1 C8 H5 108.380
H1 C8 C10 111.057 H2 C7 H3 108.445
H2 C7 H6 108.380 H2 C7 C10 111.057
H3 C7 H6 108.189 H3 C7 C10 110.663
H4 C8 H5 108.189 H4 C8 C10 110.663
H5 C8 C10 110.022 H6 C7 C10 110.022
C7 C10 C8 111.369 C7 C10 H9 109.482
C7 C10 C11 109.953 C8 C10 H9 109.482
C8 C10 C11 109.953 H9 C10 C11 106.477
C10 C11 H12 115.290 C10 C11 O13 124.717
H12 C11 O13 119.993
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability