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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: M06-2X/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-209.135996
Energy at 298.15K 
HF Energy-209.135996
Nuclear repulsion energy121.990246
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/6-31G(2df,p)
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 3784 3604 48.25      
2 A 3642 3469 47.07      
3 A 3196 3044 3.36      
4 A 3143 2993 6.82      
5 A 3067 2921 3.60      
6 A 1864 1775 325.99      
7 A 1614 1537 122.69      
8 A 1485 1414 7.87      
9 A 1473 1403 8.94      
10 A 1408 1341 109.68      
11 A 1341 1277 61.14      
12 A 1123 1069 1.19      
13 A 1057 1007 4.09      
14 A 978 931 7.50      
15 A 855 814 1.19      
16 A 648 617 8.62      
17 A 556 530 15.75      
18 A 525 500 3.73      
19 A 414 394 3.70      
20 A 175 166 202.03      
21 A 25i 24i 1.60      

Unscaled Zero Point Vibrational Energy (zpe) 16161.3 cm-1
Scaled (by 0.9524) Zero Point Vibrational Energy (zpe) 15392.0 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/6-31G(2df,p)
ABC
0.36188 0.31246 0.17316

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G(2df,p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.367 -0.294 0.000
C2 0.082 0.157 0.001
N3 0.987 -0.866 -0.030
O4 0.412 1.319 0.004
H5 -2.004 0.585 -0.057
H6 -1.568 -0.951 -0.850
H7 -1.595 -0.850 0.914
H8 1.961 -0.630 0.068
H9 0.712 -1.822 0.102

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51772.42322.40201.08771.09321.09333.34562.5822
C21.51771.36691.20752.13002.16232.15842.03852.0802
N32.42321.36692.25933.32502.68522.74941.00631.0042
O42.40201.20752.25932.52603.13143.09172.48983.1569
H51.08772.13003.32502.52601.78351.78074.14883.6331
H61.09322.16232.68523.13141.78351.76753.66042.6197
H71.09332.15842.74943.09171.78071.76753.66142.6318
H83.34562.03851.00632.48984.14883.66043.66141.7270
H92.58222.08021.00423.15693.63312.61972.63181.7270

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 114.182 C1 C2 O4 123.221
C2 C1 H5 108.546 C2 C1 H6 110.770
C2 C1 H7 110.454 C2 N3 H8 117.600
C2 N3 H9 121.893 N3 C2 O4 122.585
H5 C1 H6 109.725 H5 C1 H7 109.463
H6 C1 H7 107.872 H8 N3 H9 118.416
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.520      
2 C 0.436      
3 N -0.566      
4 O -0.387      
5 H 0.169      
6 H 0.151      
7 H 0.153      
8 H 0.285      
9 H 0.279      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.235 -3.655 0.268 3.672
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.448 -2.267 0.364
y -2.267 -25.060 -0.416
z 0.364 -0.416 -24.507
Traceless
 xyz
x 4.336 -2.267 0.364
y -2.267 -2.583 -0.416
z 0.364 -0.416 -1.753
Polar
3z2-r2-3.506
x2-y24.613
xy-2.267
xz0.364
yz-0.416


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.148 -0.102 0.003
y -0.102 5.452 -0.006
z 0.003 -0.006 3.350


<r2> (average value of r2) Å2
<r2> 74.449
(<r2>)1/2 8.628