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

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-232.423287
Energy at 298.15K-232.431748
Nuclear repulsion energy175.656002
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 B3PW91/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3118 3002 30.14      
2 A' 3111 2995 65.47      
3 A' 3072 2958 4.92      
4 A' 3038 2925 20.25      
5 A' 2846 2740 128.34      
6 A' 1838 1770 210.91      
7 A' 1525 1468 21.31      
8 A' 1517 1461 10.23      
9 A' 1435 1382 2.17      
10 A' 1419 1366 5.07      
11 A' 1319 1270 0.84      
12 A' 1187 1143 0.63      
13 A' 1185 1141 7.93      
14 A' 928 894 19.16      
15 A' 851 819 25.40      
16 A' 548 528 5.84      
17 A' 356 343 7.20      
18 A' 331 318 0.17      
19 A' 233 225 0.83      
20 A" 3117 3001 19.39      
21 A" 3104 2988 3.29      
22 A" 3035 2922 27.72      
23 A" 1504 1448 2.14      
24 A" 1499 1443 1.82      
25 A" 1409 1356 6.33      
26 A" 1351 1300 0.57      
27 A" 1144 1102 0.69      
28 A" 995 958 0.21      
29 A" 958 923 0.63      
30 A" 938 903 1.53      
31 A" 329 317 0.69      
32 A" 215 207 0.06      
33 A" 69 67 5.36      

Unscaled Zero Point Vibrational Energy (zpe) 24762.2 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 23838.6 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 B3PW91/6-311G*
ABC
0.25705 0.12441 0.09392

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.222 0.602 2.171
H2 -0.222 0.602 -2.171
H3 -1.697 0.112 -1.323
H4 -1.697 0.112 1.323
H5 -1.169 1.795 1.275
H6 -1.169 1.795 -1.275
C7 -0.816 0.760 -1.266
C8 -0.816 0.760 1.266
H9 0.907 1.096 0.000
C10 0.000 0.483 0.000
C11 0.451 -0.959 0.000
H12 -0.386 -1.700 0.000
O13 1.592 -1.335 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 H9 C10 C11 H12 O13
H14.34183.82421.76981.76733.76733.49161.09342.49652.18552.75733.16823.4290
H24.34181.76983.82423.76731.76731.09343.49162.49652.18552.75733.16823.4290
H33.82421.76982.64693.14031.76461.09542.81133.08222.18362.74042.59823.8293
H41.76983.82422.64691.76463.14032.81131.09543.08222.18362.74042.59823.8293
H51.76733.76733.14031.76462.54942.76631.09362.53452.17093.44023.80164.3646
H63.76731.76731.76463.14032.54941.09362.76632.53452.17093.44023.80164.3646
C73.49161.09341.09542.81132.76631.09362.53252.16421.53152.48262.79993.4340
C81.09343.49162.81131.09541.09362.76632.53252.16421.53152.48262.79993.4340
H92.49652.49653.08223.08222.53452.53452.16422.16421.09482.10563.08082.5263
C102.18552.18552.18362.18362.17092.17091.53151.53151.09481.51122.21702.4171
C112.75732.75732.74042.74043.44023.44022.48262.48262.10561.51121.11771.2021
H123.16823.16822.59822.59823.80163.80162.79992.79993.08082.21701.11772.0122
O133.42903.42903.82933.82934.36464.36463.43403.43402.52632.41711.20212.0122

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 107.912 H1 C8 H5 107.826
H1 C8 C10 111.650 H2 C7 H3 107.912
H2 C7 H6 107.826 H2 C7 C10 111.650
H3 C7 H6 107.431 H3 C7 C10 111.374
H4 C8 H5 107.431 H4 C8 C10 111.374
H5 C8 C10 110.472 H6 C7 C10 110.472
C7 C10 C8 111.551 C7 C10 H9 109.872
C7 C10 C11 109.357 C8 C10 H9 109.872
C8 C10 C11 109.357 H9 C10 C11 106.710
C10 C11 H12 114.155 C10 C11 O13 125.574
H12 C11 O13 120.272
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.239      
2 H 0.239      
3 H 0.222      
4 H 0.222      
5 H 0.234      
6 H 0.234      
7 C -0.655      
8 C -0.655      
9 H 0.236      
10 C -0.341      
11 C 0.162      
12 H 0.148      
13 O -0.285      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.375 1.460 0.000 2.788
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.990 3.484 0.000
y 3.484 -32.930 0.000
z 0.000 0.000 -30.917
Traceless
 xyz
x -4.066 3.484 0.000
y 3.484 0.523 0.000
z 0.000 0.000 3.543
Polar
3z2-r27.086
x2-y2-3.060
xy3.484
xz0.000
yz0.000


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> 134.658
(<r2>)1/2 11.604