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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: HF/daug-cc-pVTZ

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/daug-cc-pVTZ
 hartrees
Energy at 0K-208.065402
Energy at 298.15K-208.071216
HF Energy-208.065402
Nuclear repulsion energy123.052554
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/daug-cc-pVTZ
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 3963 3585 54.51      
2 A 3824 3459 52.57      
3 A 3285 2971 11.08      
4 A 3233 2924 19.10      
5 A 3176 2873 8.94      
6 A 1931 1747 487.86      
7 A 1771 1602 112.56      
8 A 1606 1453 8.53      
9 A 1588 1436 10.33      
10 A 1535 1388 72.79      
11 A 1441 1304 153.49      
12 A 1224 1107 1.18      
13 A 1159 1048 5.77      
14 A 1068 966 18.94      
15 A 905 819 1.02      
16 A 697 630 13.43      
17 A 600 542 20.57      
18 A 558 505 3.12      
19 A 452 409 4.46      
20 A 156 141 226.49      
21 A 47 42 1.88      

Unscaled Zero Point Vibrational Energy (zpe) 17108.0 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 15475.9 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/daug-cc-pVTZ
ABC
0.37210 0.31384 0.17576

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/daug-cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.356 -0.324 -0.001
C2 0.078 0.151 -0.010
N3 1.015 -0.825 -0.010
O4 0.369 1.309 0.002
H5 -1.990 0.466 -0.369
H6 -1.492 -1.216 -0.599
H7 -1.642 -0.552 1.020
H8 1.969 -0.566 0.050
H9 0.775 -1.784 0.019

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51082.42382.37531.07811.08251.08413.33502.5835
C21.51081.35381.19342.12232.16372.12392.02412.0570
N32.42381.35382.22973.29062.60502.86280.99090.9881
O42.37531.19342.22972.53203.19332.92242.46543.1187
H51.07812.12233.29062.53201.76931.75724.11333.5862
H61.08252.16372.60503.19331.76931.75663.58162.4181
H71.08412.12392.86282.92241.75721.75663.73932.8916
H83.33502.02410.99092.46544.11333.58163.73931.7057
H92.58352.05700.98813.11873.58622.41812.89161.7057

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 115.479 C1 C2 O4 122.460
C2 C1 H5 108.975 C2 C1 H6 112.036
C2 C1 H7 108.751 C2 N3 H8 118.551
C2 N3 H9 122.114 N3 C2 O4 122.054
H5 C1 H6 109.949 H5 C1 H7 108.724
H6 C1 H7 108.342 H8 N3 H9 119.062
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.687      
2 C 0.697      
3 N -0.527      
4 O -1.146      
5 H 0.452      
6 H 0.402      
7 H 0.386      
8 H -0.036      
9 H 0.459      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.401 -4.056 0.149 4.079
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.579 -2.263 0.234
y -2.263 -26.612 -0.203
z 0.234 -0.203 -25.057
Traceless
 xyz
x 5.255 -2.263 0.234
y -2.263 -3.794 -0.203
z 0.234 -0.203 -1.461
Polar
3z2-r2-2.923
x2-y26.033
xy-2.263
xz0.234
yz-0.203


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.593 -0.069 -0.017
y -0.069 5.866 0.000
z -0.017 0.000 4.170


<r2> (average value of r2) Å2
<r2> 74.056
(<r2>)1/2 8.606