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

using model chemistry: B3LYP/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/3-21G
 hartrees
Energy at 0K-231.183929
Energy at 298.15K-231.192462
Nuclear repulsion energy174.249929
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/3-21G
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' 3124 3014 24.38      
2 A' 3122 3012 43.34      
3 A' 3093 2985 2.39      
4 A' 3049 2942 15.42      
5 A' 2856 2755 110.93      
6 A' 1751 1690 119.01      
7 A' 1574 1518 19.49      
8 A' 1568 1513 9.48      
9 A' 1470 1418 4.12      
10 A' 1445 1394 2.58      
11 A' 1338 1291 1.02      
12 A' 1209 1167 1.21      
13 A' 1191 1150 3.31      
14 A' 908 877 26.28      
15 A' 848 819 25.70      
16 A' 538 519 4.87      
17 A' 349 337 5.82      
18 A' 341 329 0.52      
19 A' 238 229 0.73      
20 A" 3122 3013 16.39      
21 A" 3108 2999 3.17      
22 A" 3046 2939 17.96      
23 A" 1556 1501 1.93      
24 A" 1553 1498 2.08      
25 A" 1450 1400 7.39      
26 A" 1372 1323 1.04      
27 A" 1144 1104 1.62      
28 A" 997 962 0.02      
29 A" 989 954 1.00      
30 A" 961 928 2.49      
31 A" 343 331 0.59      
32 A" 225 217 0.13      
33 A" 77 74 3.54      

Unscaled Zero Point Vibrational Energy (zpe) 24976.2 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 24099.5 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/3-21G
ABC
0.25541 0.12163 0.09224

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.249 0.610 2.178
H2 -0.249 0.610 -2.178
H3 -1.691 0.039 -1.305
H4 -1.691 0.039 1.305
H5 -1.253 1.759 1.266
H6 -1.253 1.759 -1.266
C7 -0.849 0.742 -1.272
C8 -0.849 0.742 1.272
H9 0.883 1.148 0.000
C10 0.000 0.501 0.000
C11 0.480 -0.941 0.000
H12 -0.373 -1.656 0.000
O13 1.648 -1.321 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 H9 C10 C11 H12 O13
H14.35703.81351.77971.77843.76763.50501.09492.51312.19542.77153.14543.4748
H24.35701.77973.81353.76761.77841.09493.50502.51312.19542.77153.14543.4748
H33.81351.77972.61093.12471.77571.09702.80123.09132.18562.71592.51263.8344
H41.77973.81352.61091.77573.12472.80121.09703.09132.18562.71592.51263.8344
H51.77843.76763.12471.77572.53192.76441.09522.55722.18113.44923.74704.4171
H63.76761.77841.77573.12472.53191.09522.76442.55722.18113.44923.74704.4171
C73.50501.09491.09702.80122.76441.09522.54442.18691.54842.49292.75533.4799
C81.09493.50502.80121.09701.09522.76442.54442.18691.54842.49292.75533.4799
H92.51312.51313.09133.09132.55722.55722.18692.18691.09422.12663.07142.5848
C102.19542.19542.18562.18562.18112.18111.54841.54841.09421.51932.18842.4569
C112.77152.77152.71592.71593.44923.44922.49292.49292.12661.51931.11281.2286
H123.14543.14542.51262.51263.74703.74702.75532.75533.07142.18841.11282.0482
O133.47483.47483.83443.83444.41714.41713.47993.47992.58482.45691.22862.0482

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 108.570 H1 C8 H5 108.589
H1 C8 C10 111.150 H2 C7 H3 108.570
H2 C7 H6 108.589 H2 C7 C10 111.150
H3 C7 H6 108.197 H3 C7 C10 110.253
H4 C8 H5 108.197 H4 C8 C10 110.253
H5 C8 C10 110.008 H6 C7 C10 110.008
C7 C10 C8 110.500 C7 C10 H9 110.520
C7 C10 C11 108.705 C8 C10 H9 110.520
C8 C10 C11 108.705 H9 C10 C11 107.813
C10 C11 H12 111.566 C10 C11 O13 126.466
H12 C11 O13 121.968
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.203     0.126
2 H 0.203     0.126
3 H 0.191     0.127
4 H 0.191     0.127
5 H 0.202     0.144
6 H 0.202     0.144
7 C -0.534     -0.497
8 C -0.534     -0.497
9 H 0.218     0.011
10 C -0.370     0.224
11 C 0.307     0.438
12 H 0.141     -0.044
13 O -0.418     -0.429


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.287 1.380 0.000 2.671
CHELPG        
AIM        
ESP -2.305 1.377 0.000 2.685


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.813 3.203 0.000
y 3.203 -32.917 0.000
z 0.000 0.000 -30.674
Traceless
 xyz
x -4.018 3.203 0.000
y 3.203 0.327 0.000
z 0.000 0.000 3.691
Polar
3z2-r27.383
x2-y2-2.896
xy3.203
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.687 -0.602 0.000
y -0.602 6.179 0.000
z 0.000 0.000 5.618


<r2> (average value of r2) Å2
<r2> 136.262
(<r2>)1/2 11.673