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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: PBEPBE/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at PBEPBE/6-311G**
 hartrees
Energy at 0K-209.028013
Energy at 298.15K-209.033553
Nuclear repulsion energy120.905426
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 PBEPBE/6-311G**
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 3650 3617 25.03      
2 A 3512 3480 19.05      
3 A 3068 3040 6.81      
4 A 3066 3038 18.58      
5 A 2985 2958 9.85      
6 A 1741 1725 302.64      
7 A 1568 1554 99.13      
8 A 1443 1430 10.70      
9 A 1421 1408 8.94      
10 A 1346 1334 74.72      
11 A 1305 1293 89.24      
12 A 1084 1075 0.22      
13 A 1012 1003 4.54      
14 A 946 937 6.25      
15 A 821 813 3.32      
16 A 664 658 9.84      
17 A 525 520 12.43      
18 A 508 504 9.12      
19 A 416 413 4.34      
20 A 175 173 181.83      
21 A 10 10 10.96      

Unscaled Zero Point Vibrational Energy (zpe) 15632.3 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 15490.0 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 PBEPBE/6-311G**
ABC
0.35668 0.30637 0.17006

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.366 -0.344 0.000
C2 0.077 0.148 -0.001
N3 1.033 -0.837 0.005
O4 0.363 1.340 -0.001
H5 -1.877 0.082 -0.875
H6 -1.477 -1.438 -0.017
H7 -1.868 0.053 0.894
H8 2.008 -0.554 -0.008
H9 0.809 -1.824 -0.018

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.52442.44942.41271.09921.09971.09943.38042.6304
C21.52441.37251.22572.14202.21992.14322.05422.1028
N32.44941.37252.27773.17642.58093.16221.01511.0124
O42.41271.22572.27772.71343.33112.72622.50843.1948
H51.09922.14203.17642.71341.79041.76944.03113.4029
H61.09972.21992.58093.33111.79041.79033.59502.3175
H71.09942.14323.16222.72621.76941.79034.02553.3936
H83.38042.05421.01512.50844.03113.59504.02551.7471
H92.63042.10281.01243.19483.40292.31753.39361.7471

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 115.355 C1 C2 O4 122.264
C2 C1 H5 108.368 C2 C1 H6 114.576
C2 C1 H7 108.451 C2 N3 H8 117.941
C2 N3 H9 122.992 N3 C2 O4 122.380
H5 C1 H6 109.020 H5 C1 H7 107.178
H6 C1 H7 108.997 H8 N3 H9 119.016
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.361      
2 C 0.269      
3 N -0.435      
4 O -0.333      
5 H 0.152      
6 H 0.108      
7 H 0.153      
8 H 0.227      
9 H 0.220      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.034 -3.652 -0.048 3.652
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.531 -2.369 -0.077
y -2.369 -25.686 0.085
z -0.077 0.085 -24.923
Traceless
 xyz
x 4.773 -2.369 -0.077
y -2.369 -2.959 0.085
z -0.077 0.085 -1.814
Polar
3z2-r2-3.628
x2-y25.155
xy-2.369
xz-0.077
yz0.085


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.868 -0.241 -0.002
y -0.241 5.829 0.002
z -0.002 0.002 3.425


<r2> (average value of r2) Å2
<r2> 75.822
(<r2>)1/2 8.708