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

using model chemistry: PBEPBE/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 PBEPBE/6-31G**
 hartrees
Energy at 0K-232.163232
Energy at 298.15K-232.171531
Nuclear repulsion energy174.327042
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**
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' 3071 3029 18.71      
2 A' 3059 3018 44.70      
3 A' 3013 2972 7.13      
4 A' 2981 2940 16.73      
5 A' 2747 2709 127.81      
6 A' 1780 1755 167.68      
7 A' 1476 1456 14.11      
8 A' 1468 1447 8.89      
9 A' 1386 1367 1.35      
10 A' 1371 1352 3.08      
11 A' 1267 1250 0.77      
12 A' 1148 1132 1.60      
13 A' 1141 1125 6.61      
14 A' 901 888 21.73      
15 A' 827 816 25.44      
16 A' 530 522 4.72      
17 A' 340 335 5.56      
18 A' 322 318 0.32      
19 A' 228 225 0.82      
20 A" 3071 3029 16.19      
21 A" 3055 3014 1.72      
22 A" 2979 2938 21.45      
23 A" 1453 1434 1.23      
24 A" 1451 1431 1.29      
25 A" 1357 1339 3.07      
26 A" 1303 1285 1.54      
27 A" 1104 1089 0.39      
28 A" 965 952 0.23      
29 A" 925 912 0.56      
30 A" 906 894 1.80      
31 A" 316 312 0.43      
32 A" 210 207 0.10      
33 A" 62 61 3.61      

Unscaled Zero Point Vibrational Energy (zpe) 24105.2 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 23775.0 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**
ABC
0.25425 0.12243 0.09263

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.320 0.572 2.184
H2 0.320 0.572 -2.184
H3 -1.042 1.345 -1.328
H4 -1.042 1.345 1.328
H5 0.577 2.083 1.272
H6 0.577 2.083 -1.272
C7 0.038 1.122 -1.273
C8 0.038 1.122 1.273
H9 1.438 0.035 0.000
C10 0.371 0.320 0.000
C11 -0.430 -0.972 0.000
H12 -1.548 -0.807 0.000
O13 0.038 -2.098 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 H9 C10 C11 H12 O13
H14.36903.84591.78471.78433.78113.51191.10172.51202.19952.77803.18753.4613
H24.36901.78473.84593.78111.78431.10173.51192.51202.19952.77803.18753.4613
H33.84591.78472.65653.15071.78041.10412.82493.10312.19382.73992.57883.8452
H41.78473.84592.65651.78043.15072.82491.10413.10312.19382.73992.57883.8452
H51.78433.78113.15071.78042.54372.77291.10222.56012.18383.45933.80604.4038
H63.78111.78431.78043.15072.54371.10222.77292.56012.18383.45933.80604.4038
C73.51191.10171.10412.82492.77291.10222.54512.18191.54072.49462.80253.4625
C81.10173.51192.82491.10411.10222.77292.54512.18191.54072.49462.80253.4625
H92.51202.51203.10313.10312.56012.56012.18192.18191.10372.12183.10182.5515
C102.19952.19952.19382.19382.18382.18381.54071.54071.10371.52042.22562.4412
C112.77802.77802.73992.73993.45933.45932.49462.49462.12181.52041.12981.2195
H123.18753.18752.57882.57883.80603.80602.80252.80253.10182.22561.12982.0449
O133.46133.46133.84523.84524.40384.40383.46253.46252.55152.44121.21952.0449

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 108.019 H1 C8 H5 108.116
H1 C8 C10 111.617 H2 C7 H3 108.019
H2 C7 H6 108.116 H2 C7 C10 111.617
H3 C7 H6 107.598 H3 C7 C10 111.011
H4 C8 H5 107.598 H4 C8 C10 111.011
H5 C8 C10 110.335 H6 C7 C10 110.335
C7 C10 C8 111.373 C7 C10 H9 110.098
C7 C10 C11 109.158 C8 C10 H9 110.098
C8 C10 C11 109.158 H9 C10 C11 106.840
C10 C11 H12 113.409 C10 C11 O13 125.630
H12 C11 O13 120.960
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.137      
2 H 0.137      
3 H 0.125      
4 H 0.125      
5 H 0.132      
6 H 0.132      
7 C -0.370      
8 C -0.370      
9 H 0.132      
10 C -0.153      
11 C 0.278      
12 H 0.059      
13 O -0.363      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.359 2.645 0.000 2.669
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.737 0.837 0.000
y 0.837 -37.257 0.000
z 0.000 0.000 -30.416
Traceless
 xyz
x 3.099 0.837 0.000
y 0.837 -6.680 0.000
z 0.000 0.000 3.581
Polar
3z2-r27.162
x2-y26.520
xy0.837
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.529 -0.075 0.000
y -0.075 7.930 0.000
z 0.000 0.000 6.393


<r2> (average value of r2) Å2
<r2> 135.913
(<r2>)1/2 11.658