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

using model chemistry: PBEPBE/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 PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-232.171230
Energy at 298.15K-232.179524
Nuclear repulsion energy174.590145
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 PBEPBE/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' 3062 3030 17.60      
2 A' 3050 3019 40.97      
3 A' 3003 2972 7.12      
4 A' 2972 2942 15.35      
5 A' 2727 2699 121.31      
6 A' 1782 1763 168.95      
7 A' 1461 1446 12.50      
8 A' 1453 1438 8.09      
9 A' 1379 1365 1.16      
10 A' 1358 1344 3.11      
11 A' 1260 1247 0.87      
12 A' 1143 1132 2.84      
13 A' 1137 1125 6.48      
14 A' 897 888 18.85      
15 A' 823 814 24.27      
16 A' 529 523 4.49      
17 A' 336 332 5.42      
18 A' 319 315 0.27      
19 A' 224 222 0.81      
20 A" 3061 3030 14.62      
21 A" 3046 3015 1.62      
22 A" 2970 2940 20.73      
23 A" 1438 1423 1.19      
24 A" 1436 1421 0.82      
25 A" 1341 1327 2.32      
26 A" 1295 1281 1.87      
27 A" 1102 1091 0.33      
28 A" 967 957 0.16      
29 A" 922 912 0.39      
30 A" 900 891 1.49      
31 A" 315 312 0.48      
32 A" 205 203 0.09      
33 A" 69 68 3.44      

Unscaled Zero Point Vibrational Energy (zpe) 23989.9 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 23742.8 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 PBEPBE/6-31G(2df,p)
ABC
0.25475 0.12288 0.09292

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.323 0.572 2.183
H2 0.323 0.572 -2.183
H3 -1.046 1.333 -1.327
H4 -1.046 1.333 1.327
H5 0.567 2.086 1.269
H6 0.567 2.086 -1.269
C7 0.036 1.120 -1.271
C8 0.036 1.120 1.271
H9 1.441 0.040 0.000
C10 0.374 0.320 0.000
C11 -0.425 -0.972 0.000
H12 -1.543 -0.800 0.000
O13 0.036 -2.094 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 H9 C10 C11 H12 O13
H14.36623.84381.78451.78493.77713.50941.10152.51002.19822.77663.18243.4577
H24.36621.78453.84383.77711.78491.10153.50942.51002.19822.77663.18243.4577
H33.84381.78452.65463.14741.78031.10392.82303.10152.19202.73162.56123.8312
H41.78453.84382.65461.78033.14742.82301.10393.10152.19202.73162.56123.8312
H51.78493.77713.14741.78032.53792.76911.10202.56102.18263.45593.79284.4000
H63.77711.78491.78033.14742.53791.10202.76912.56102.18263.45593.79284.4000
C73.50941.10151.10392.82302.76911.10202.54292.18111.53972.49102.79173.4561
C81.10153.50942.82301.10391.10202.76912.54292.18111.53972.49102.79173.4561
H92.51002.51003.10153.10152.56102.56102.18112.18111.10312.12333.09992.5552
C102.19822.19822.19202.19202.18262.18261.53971.53971.10311.51962.22022.4377
C112.77662.77662.73162.73163.45593.45592.49102.49102.12331.51961.13041.2130
H123.18243.18242.56122.56123.79283.79282.79172.79173.09992.22021.13042.0410
O133.45773.45773.83123.83124.40004.40003.45613.45612.55522.43771.21302.0410

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 108.021 H1 C8 H5 108.195
H1 C8 C10 111.591 H2 C7 H3 108.021
H2 C7 H6 108.195 H2 C7 C10 111.591
H3 C7 H6 107.613 H3 C7 C10 110.953
H4 C8 H5 107.613 H4 C8 C10 110.953
H5 C8 C10 110.327 H6 C7 C10 110.327
C7 C10 C8 111.338 C7 C10 H9 110.149
C7 C10 C11 109.025 C8 C10 H9 110.149
C8 C10 C11 109.025 H9 C10 C11 107.044
C10 C11 H12 112.996 C10 C11 O13 125.903
H12 C11 O13 121.101
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.141      
2 H 0.141      
3 H 0.132      
4 H 0.132      
5 H 0.136      
6 H 0.136      
7 C -0.428      
8 C -0.428      
9 H 0.107      
10 C -0.063      
11 C 0.149      
12 H 0.065      
13 O -0.223      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.325 2.577 0.000 2.598
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.646 0.819 0.000
y 0.819 -37.091 0.000
z 0.000 0.000 -30.443
Traceless
 xyz
x 3.122 0.819 0.000
y 0.819 -6.547 0.000
z 0.000 0.000 3.425
Polar
3z2-r26.851
x2-y26.446
xy0.819
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.676 -0.021 0.000
y -0.021 8.088 0.000
z 0.000 0.000 6.695


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000