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

using model chemistry: mPW1PW91/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-232.428753
Energy at 298.15K-232.437194
Nuclear repulsion energy175.617806
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 mPW1PW91/aug-cc-pVDZ
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' 3149 3017 23.05      
2 A' 3138 3007 49.84      
3 A' 3100 2971 3.61      
4 A' 3054 2927 18.59      
5 A' 2880 2760 99.17      
6 A' 1831 1755 224.49      
7 A' 1492 1430 16.73      
8 A' 1483 1421 7.65      
9 A' 1412 1353 0.63      
10 A' 1396 1338 4.25      
11 A' 1306 1251 0.62      
12 A' 1182 1133 7.44      
13 A' 1177 1128 2.70      
14 A' 935 896 17.38      
15 A' 851 815 20.68      
16 A' 548 525 6.11      
17 A' 351 336 7.43      
18 A' 333 319 0.24      
19 A' 230 220 0.95      
20 A" 3148 3016 15.18      
21 A" 3132 3001 3.32      
22 A" 3052 2925 22.89      
23 A" 1469 1408 1.37      
24 A" 1464 1403 1.46      
25 A" 1383 1325 4.78      
26 A" 1333 1277 0.41      
27 A" 1146 1099 1.07      
28 A" 999 957 0.63      
29 A" 949 910 0.22      
30 A" 922 884 1.54      
31 A" 329 316 1.15      
32 A" 202 194 0.02      
33 A" 65 62 6.66      

Unscaled Zero Point Vibrational Energy (zpe) 24719.5 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 23688.7 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 mPW1PW91/aug-cc-pVDZ
ABC
0.25704 0.12462 0.09411

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.309 0.556 2.171
H2 0.309 0.556 -2.171
H3 -1.033 1.350 -1.318
H4 -1.033 1.350 1.318
H5 0.590 2.061 1.271
H6 0.590 2.061 -1.271
C7 0.038 1.113 -1.266
C8 0.038 1.113 1.266
H9 1.426 0.036 0.000
C10 0.366 0.317 0.000
C11 -0.429 -0.964 0.000
H12 -1.540 -0.823 0.000
O13 0.038 -2.077 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 H6 C7 C8 H9 C10 C11 H12 O13
H14.34253.82191.77811.77583.76693.49241.09672.49662.18512.75163.16783.4235
H24.34251.77813.82193.76691.77581.09673.49242.49662.18512.75163.16783.4235
H33.82191.77812.63573.13701.77271.09892.80733.08462.18202.73112.59163.8250
H41.77813.82192.63571.77273.13702.80731.09893.08462.18202.73112.59163.8250
H51.77583.76693.13701.77272.54152.76371.09702.53262.16913.43573.80354.3634
H63.76691.77581.77273.13702.54151.09702.76372.53262.16913.43573.80354.3634
C73.49241.09671.09892.80732.76371.09702.53182.16541.53042.47682.79983.4315
C81.09673.49242.80731.09891.09702.76372.53182.16541.53042.47682.79983.4315
H92.49662.49663.08463.08462.53262.53262.16542.16541.09752.10803.08812.5280
C102.18512.18512.18202.18202.16912.16911.53041.53041.09751.50802.22052.4164
C112.75162.75162.73112.73113.43573.43572.47682.47682.10801.50801.11951.2069
H123.16783.16782.59162.59163.80353.80352.79982.79983.08812.22051.11952.0156
O133.42353.42353.82503.82504.36344.36343.43153.43152.52802.41641.20692.0156

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 108.164 H1 C8 H5 108.095
H1 C8 C10 111.486 H2 C7 H3 108.164
H2 C7 H6 108.095 H2 C7 C10 111.486
H3 C7 H6 107.659 H3 C7 C10 111.106
H4 C8 H5 107.659 H4 C8 C10 111.106
H5 C8 C10 110.194 H6 C7 C10 110.194
C7 C10 C8 111.615 C7 C10 H9 109.873
C7 C10 C11 109.202 C8 C10 H9 109.873
C8 C10 C11 109.202 H9 C10 C11 106.956
C10 C11 H12 114.557 C10 C11 O13 125.400
H12 C11 O13 120.042
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H -0.128      
2 H -0.128      
3 H -0.089      
4 H -0.089      
5 H -0.131      
6 H -0.131      
7 C 0.687      
8 C 0.687      
9 H -0.381      
10 C -0.487      
11 C 0.873      
12 H -0.147      
13 O -0.534      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.489 2.987 0.000 3.026
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.886 1.197 0.000
y 1.197 -38.875 0.000
z 0.000 0.000 -30.938
Traceless
 xyz
x 4.021 1.197 0.000
y 1.197 -7.963 0.000
z 0.000 0.000 3.942
Polar
3z2-r27.884
x2-y27.990
xy1.197
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.472 -0.135 0.000
y -0.135 9.057 0.000
z 0.000 0.000 7.657


<r2> (average value of r2) Å2
<r2> 134.675
(<r2>)1/2 11.605