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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: HF/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 HF/6-311G**
 hartrees
Energy at 0K-208.036744
Energy at 298.15K-208.042658
Nuclear repulsion energy122.898319
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 HF/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 3961 3598 49.64      
2 A 3825 3475 48.93      
3 A 3292 2991 12.84      
4 A 3238 2942 23.76      
5 A 3178 2887 9.09      
6 A 1964 1785 468.61      
7 A 1775 1613 121.59      
8 A 1604 1457 9.09      
9 A 1588 1443 10.19      
10 A 1535 1394 86.54      
11 A 1443 1311 139.66      
12 A 1231 1119 0.89      
13 A 1155 1050 7.62      
14 A 1067 969 16.67      
15 A 908 825 1.02      
16 A 695 632 19.80      
17 A 602 547 24.09      
18 A 551 501 5.08      
19 A 451 410 3.90      
20 A 210 190 256.48      
21 A 53 48 1.82      

Unscaled Zero Point Vibrational Energy (zpe) 17162.4 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 15592.1 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 HF/6-311G**
ABC
0.37026 0.31368 0.17540

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.357 -0.324 -0.000
C2 0.078 0.155 -0.009
N3 1.014 -0.830 -0.028
O4 0.370 1.310 0.005
H5 -1.996 0.481 -0.334
H6 -1.496 -1.194 -0.633
H7 -1.634 -0.592 1.015
H8 1.966 -0.567 0.084
H9 0.771 -1.783 0.086

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51282.42492.37761.08021.08471.08643.33272.5813
C21.51281.35881.19202.12432.16482.13062.02312.0602
N32.42491.35882.23543.29722.60812.85660.99330.9908
O42.37761.19202.23542.52973.18742.94212.46543.1206
H51.08022.12433.29722.52971.77251.76144.11903.5992
H61.08472.16482.60813.18741.77251.76043.59072.4504
H71.08642.13062.85662.94211.76141.76043.71852.8397
H83.33272.02310.99332.46544.11903.59073.71851.7052
H92.58132.06020.99083.12063.59922.45042.83971.7052

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 115.116 C1 C2 O4 122.603
C2 C1 H5 108.872 C2 C1 H6 111.842
C2 C1 H7 109.009 C2 N3 H8 117.824
C2 N3 H9 121.739 N3 C2 O4 122.280
H5 C1 H6 109.926 H5 C1 H7 108.778
H6 C1 H7 108.360 H8 N3 H9 118.504
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.274      
2 C 0.446      
3 N -0.524      
4 O -0.471      
5 H 0.134      
6 H 0.102      
7 H 0.119      
8 H 0.240      
9 H 0.228      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.364 -3.970 0.398 4.007
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.632 -2.204 0.533
y -2.204 -26.278 -0.572
z 0.533 -0.572 -24.750
Traceless
 xyz
x 4.882 -2.204 0.533
y -2.204 -3.587 -0.572
z 0.533 -0.572 -1.295
Polar
3z2-r2-2.590
x2-y25.646
xy-2.204
xz0.533
yz-0.572


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.683 -0.028 0.006
y -0.028 5.102 -0.006
z 0.006 -0.006 3.219


<r2> (average value of r2) Å2
<r2> 74.054
(<r2>)1/2 8.605