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

using model chemistry: G3B3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at G3B3
 hartrees
Energy at 0K-232.263122
Energy at 298.15K-232.255671
Nuclear repulsion energy 
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*
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' 3125 3001 27.08      
2 A' 3116 2993 58.75      
3 A' 3076 2953 6.13      
4 A' 3048 2927 18.04      
5 A' 2864 2750 117.78      
6 A' 1836 1763 176.66      
7 A' 1540 1479 13.52      
8 A' 1534 1473 7.23      
9 A' 1452 1395 1.06      
10 A' 1434 1377 3.44      
11 A' 1331 1278 1.76      
12 A' 1195 1148 1.49      
13 A' 1189 1141 7.46      
14 A' 923 887 20.30      
15 A' 851 817 21.07      
16 A' 544 523 5.59      
17 A' 358 344 7.05      
18 A' 331 318 0.20      
19 A' 232 223 0.75      
20 A" 3124 3000 18.75      
21 A" 3110 2986 2.99      
22 A" 3045 2924 23.42      
23 A" 1522 1461 1.54      
24 A" 1519 1458 0.90      
25 A" 1428 1371 2.10      
26 A" 1363 1309 1.83      
27 A" 1143 1097 0.36      
28 A" 990 951 0.05      
29 A" 964 926 0.80      
30 A" 944 906 0.98      
31 A" 328 315 0.53      
32 A" 216 207 0.07      
33 A" 66 63 4.97      

Unscaled Zero Point Vibrational Energy (zpe) 24868.7 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 23881.5 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 B3LYP/6-31G*
ABC
0.25491 0.12321 0.09303

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.222 0.610 2.177
H2 -0.222 0.610 -2.177
H3 -1.700 0.112 -1.330
H4 -1.700 0.112 1.330
H5 -1.175 1.802 1.274
H6 -1.175 1.802 -1.274
C7 -0.820 0.765 -1.273
C8 -0.820 0.765 1.273
H9 0.908 1.097 0.000
C10 0.000 0.483 0.000
C11 0.451 -0.965 0.000
H12 -0.389 -1.703 0.000
O13 1.601 -1.341 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 H9 C10 C11 H12 O13
H14.35473.83831.77421.77333.77393.50471.09542.50122.19232.77013.18083.4456
H24.35471.77423.83833.77391.77331.09543.50472.50122.19232.77013.18083.4456
H33.83831.77422.66043.14851.77011.09742.82403.08862.19002.74812.60433.8439
H41.77423.83832.66041.77013.14852.82401.09743.08862.19002.74812.60433.8439
H51.77333.77393.14851.77012.54852.77241.09562.54152.17773.45283.81124.3829
H63.77391.77331.77013.14852.54851.09562.77242.54152.17773.45283.81124.3829
C73.50471.09541.09742.82402.77241.09562.54502.17131.53972.49542.81033.4522
C81.09543.50472.82401.09741.09562.77242.54502.17131.53972.49542.81033.4522
H92.50122.50123.08863.08862.54152.54152.17132.17131.09612.11273.08612.5354
C102.19232.19232.19002.19002.17772.17771.53971.53971.09611.51702.22082.4276
C112.77012.77012.74812.74813.45283.45282.49542.49542.11271.51701.11751.2105
H123.18083.18082.60432.60433.81123.81122.81032.81033.08612.22081.11752.0224
O133.44563.44563.84393.84394.38294.38293.45223.45222.53542.42761.21052.0224

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 108.026 H1 C8 H5 108.058
H1 C8 C10 111.491 H2 C7 H3 108.026
H2 C7 H6 108.058 H2 C7 C10 111.491
H3 C7 H6 107.646 H3 C7 C10 111.152
H4 C8 H5 107.646 H4 C8 C10 111.152
H5 C8 C10 110.323 H6 C7 C10 110.323
C7 C10 C8 111.474 C7 C10 H9 109.800
C7 C10 C11 109.426 C8 C10 H9 109.800
C8 C10 C11 109.426 H9 C10 C11 106.799
C10 C11 H12 114.050 C10 C11 O13 125.388
H12 C11 O13 120.562
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.162 0.059 0.020 0.097
2 H 0.162 0.059 0.020 0.097
3 H 0.149 0.051 0.010 0.090
4 H 0.149 0.051 0.010 0.090
5 H 0.157 0.071 0.020 0.109
6 H 0.157 0.071 0.020 0.109
7 C -0.460 -0.255 -0.033 -0.393
8 C -0.460 -0.255 -0.033 -0.393
9 H 0.154 -0.037 0.029 -0.020
10 C -0.140 0.262 0.039 0.289
11 C 0.263 0.403 1.029 0.384
12 H 0.092 -0.037 0.015 -0.024
13 O -0.386 -0.444 -1.148 -0.436


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.350 1.454 0.000 2.764
CHELPG -2.388 1.461 0.000 2.800
AIM 1.704 -0.597 0.000 1.805
ESP -2.385 1.458 0.000 2.795


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 135.486
(<r2>)1/2 11.640