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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: B97D3/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B97D3/3-21G
 hartrees
Energy at 0K-207.937927
Energy at 298.15K-207.943924
HF Energy-207.937927
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 B97D3/3-21G
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 3605 3544 16.71      
2 A 3466 3407 13.48      
3 A 3131 3078 8.55      
4 A 3065 3013 17.44      
5 A 3004 2953 8.58      
6 A 1715 1686 202.10      
7 A 1640 1612 51.24      
8 A 1528 1502 9.74      
9 A 1504 1478 15.94      
10 A 1394 1371 24.35      
11 A 1304 1282 162.83      
12 A 1116 1097 0.05      
13 A 1062 1044 11.08      
14 A 977 960 8.58      
15 A 789 775 3.81      
16 A 666 655 49.07      
17 A 531 522 44.16      
18 A 528 519 9.59      
19 A 452 444 221.24      
20 A 411 404 3.34      
21 A 64 63 0.15      

Unscaled Zero Point Vibrational Energy (zpe) 15976.0 cm-1
Scaled (by 0.983) Zero Point Vibrational Energy (zpe) 15704.4 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 B97D3/3-21G
ABC
0.34524 0.30611 0.16744

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.400 -0.217 0.000
C2 0.094 0.157 -0.000
N3 0.921 -0.948 0.000
O4 0.523 1.326 -0.000
H5 -1.985 0.708 -0.000
H6 -1.649 -0.810 -0.893
H7 -1.649 -0.809 0.893
H8 1.927 -0.802 -0.000
H9 0.561 -1.898 -0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.53912.43272.46501.09421.10081.10083.37802.5830
C21.53911.37991.24562.15042.18342.18332.06922.1071
N32.43271.37992.30823.34422.72352.72371.01711.0155
O42.46501.24562.30822.58313.17423.17402.54953.2239
H51.09422.15043.34422.58311.79281.79284.19353.6433
H61.10082.18342.72353.17421.79281.78663.68572.6202
H71.10082.18332.72373.17401.79281.78663.68582.6206
H83.37802.06921.01712.54954.19353.68573.68581.7509
H92.58302.10711.01553.22393.64332.62022.62061.7509

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 112.399 C1 C2 O4 123.934
C2 C1 H5 108.175 C2 C1 H6 110.996
C2 C1 H7 110.859 C2 N3 H8 118.038
C2 N3 H9 122.659 N3 C2 O4 123.666
H5 C1 H6 109.564 H5 C1 H7 109.340
H6 C1 H7 107.892 H8 N3 H9 118.281
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.662      
2 C 0.593      
3 N -0.739      
4 O -0.488      
5 H 0.237      
6 H 0.214      
7 H 0.214      
8 H 0.319      
9 H 0.312      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.278 -3.731 -0.000 3.741
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.740 -2.703 -0.000
y -2.703 -24.495 0.001
z -0.000 0.001 -24.551
Traceless
 xyz
x 3.783 -2.703 -0.000
y -2.703 -1.850 0.001
z -0.000 0.001 -1.933
Polar
3z2-r2-3.867
x2-y23.755
xy-2.703
xz-0.000
yz0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.650 -0.045 0.000
y -0.045 5.103 0.000
z 0.000 0.000 2.460


<r2> (average value of r2) Å2
<r2> 76.297
(<r2>)1/2 8.735