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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: wB97X-D/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at wB97X-D/6-31G*
 hartrees
Energy at 0K-209.145726
Energy at 298.15K-209.151361
HF Energy-209.145726
Nuclear repulsion energy 
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 wB97X-D/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 3781 3586 37.82      
2 A 3650 3462 37.77      
3 A 3203 3038 6.49      
4 A 3158 2996 14.94      
5 A 3084 2926 7.02      
6 A 1858 1762 332.54      
7 A 1660 1575 119.31      
8 A 1525 1446 11.41      
9 A 1512 1434 9.38      
10 A 1437 1363 87.46      
11 A 1377 1306 90.82      
12 A 1146 1087 0.79      
13 A 1074 1018 8.62      
14 A 1003 951 6.47      
15 A 861 816 1.72      
16 A 663 629 15.16      
17 A 556 528 15.60      
18 A 514 488 6.58      
19 A 432 410 4.20      
20 A 140 133 257.45      
21 A 52 49 6.69      

Unscaled Zero Point Vibrational Energy (zpe) 16342.1 cm-1
Scaled (by 0.9485) Zero Point Vibrational Energy (zpe) 15500.5 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 wB97X-D/6-31G*
ABC
0.36069 0.30958 0.17200

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.373 -0.293 0.000
C2 0.081 0.156 -0.000
N3 0.990 -0.870 -0.030
O4 0.417 1.324 0.004
H5 -2.010 0.589 -0.060
H6 -1.581 -0.952 -0.850
H7 -1.608 -0.845 0.917
H8 1.966 -0.635 0.067
H9 0.716 -1.831 0.103

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.52192.43182.41201.08981.09561.09583.35702.5959
C21.52191.37061.21482.13622.17142.16712.04532.0883
N32.43181.37062.26743.33532.69972.76481.00911.0076
O42.41201.21482.26742.53623.14673.10402.49823.1700
H51.08982.13623.33532.53621.78381.78124.16193.6486
H61.09562.17142.69973.14671.78381.77123.67772.6384
H71.09582.16712.76483.10401.78121.77123.67972.6527
H83.35702.04531.00912.49824.16193.67773.67971.7297
H92.59592.08831.00763.17003.64862.63842.65271.7297

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 114.332 C1 C2 O4 123.213
C2 C1 H5 108.622 C2 C1 H6 111.057
C2 C1 H7 110.705 C2 N3 H8 117.715
C2 N3 H9 122.091 N3 C2 O4 122.446
H5 C1 H6 109.416 H5 C1 H7 109.168
H6 C1 H7 107.847 H8 N3 H9 118.120
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.600      
2 C 0.590      
3 N -0.787      
4 O -0.503      
5 H 0.212      
6 H 0.169      
7 H 0.202      
8 H 0.363      
9 H 0.354      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.164 -3.804 0.330 3.822
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.036 -2.351 0.360
y -2.351 -25.228 -0.451
z 0.360 -0.451 -24.485
Traceless
 xyz
x 4.820 -2.351 0.360
y -2.351 -2.968 -0.451
z 0.360 -0.451 -1.853
Polar
3z2-r2-3.706
x2-y25.192
xy-2.351
xz0.360
yz-0.451


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.844 -0.140 -0.004
y -0.140 5.274 0.003
z -0.004 0.003 2.939


<r2> (average value of r2) Å2
<r2> 74.831
(<r2>)1/2 8.650