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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: M06-2X/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at M06-2X/aug-cc-pVTZ
 hartrees
Energy at 0K-209.211514
Energy at 298.15K 
HF Energy-209.211514
Nuclear repulsion energy122.116272
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 M06-2X/aug-cc-pVTZ
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 3760 3593 54.78      
2 A 3620 3459 50.29      
3 A 3179 3039 2.30      
4 A 3130 2991 4.54      
5 A 3063 2927 3.75      
6 A 1817 1737 398.04      
7 A 1618 1546 119.96      
8 A 1489 1423 8.83      
9 A 1474 1409 13.49      
10 A 1412 1350 103.12      
11 A 1344 1284 87.75      
12 A 1123 1073 1.20      
13 A 1064 1017 3.22      
14 A 981 938 12.13      
15 A 859 821 1.03      
16 A 646 617 6.56      
17 A 561 536 15.13      
18 A 535 511 3.05      
19 A 422 403 3.81      
20 A 179 172 198.11      
21 A 80i 76i 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 16097.8 cm-1
Scaled (by 0.9557) Zero Point Vibrational Energy (zpe) 15384.7 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 M06-2X/aug-cc-pVTZ
ABC
0.36335 0.31283 0.17353

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/aug-cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.365 -0.304 -0.000
C2 0.078 0.155 0.000
N3 0.996 -0.856 -0.029
O4 0.400 1.320 0.004
H5 -2.008 0.568 -0.057
H6 -1.558 -0.960 -0.849
H7 -1.584 -0.859 0.912
H8 1.968 -0.612 0.065
H9 0.729 -1.814 0.098

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51332.42482.39741.08461.09001.09023.34732.5833
C21.51331.36601.20852.12672.15382.14932.04082.0762
N32.42481.36602.25583.32452.68482.74661.00601.0034
O42.39741.20852.25582.52293.12343.08312.48853.1524
H51.08462.12673.32452.52291.77851.77594.14873.6314
H61.09002.15382.68483.12341.77851.76363.65892.6184
H71.09022.14932.74663.08311.77591.76363.65982.6312
H83.34732.04081.00602.48854.14873.65893.65981.7270
H92.58332.07621.00343.15243.63142.61842.63121.7270

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 114.642 C1 C2 O4 123.089
C2 C1 H5 108.774 C2 C1 H6 110.602
C2 C1 H7 110.230 C2 N3 H8 117.921
C2 N3 H9 121.637 N3 C2 O4 122.257
H5 C1 H6 109.744 H5 C1 H7 109.492
H6 C1 H7 107.987 H8 N3 H9 118.512
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.663      
2 C 0.638      
3 N -0.384      
4 O -0.719      
5 H 0.232      
6 H 0.272      
7 H 0.277      
8 H 0.187      
9 H 0.160      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.378 -3.915 0.039 3.933
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.815 -2.346 0.056
y -2.346 -26.305 -0.050
z 0.056 -0.050 -25.289
Traceless
 xyz
x 4.982 -2.346 0.056
y -2.346 -3.253 -0.050
z 0.056 -0.050 -1.729
Polar
3z2-r2-3.459
x2-y25.490
xy-2.346
xz0.056
yz-0.050


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.142 -0.109 -0.007
y -0.109 6.451 -0.001
z -0.007 -0.001 4.390


<r2> (average value of r2) Å2
<r2> 74.815
(<r2>)1/2 8.650