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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-208.025681
Energy at 298.15K-208.031609
Nuclear repulsion energy122.904351
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 3983 3602 36.95      
2 A 3851 3483 39.52      
3 A 3308 2991 16.21      
4 A 3252 2941 28.77      
5 A 3195 2889 11.35      
6 A 1967 1779 473.49      
7 A 1812 1639 113.68      
8 A 1620 1465 8.86      
9 A 1607 1453 10.80      
10 A 1548 1400 78.68      
11 A 1450 1312 150.27      
12 A 1243 1124 0.83      
13 A 1165 1053 7.74      
14 A 1073 970 17.36      
15 A 910 823 1.08      
16 A 701 634 22.91      
17 A 602 545 24.25      
18 A 554 501 5.55      
19 A 450 407 3.94      
20 A 219 198 293.83      
21 A 54 49 1.23      

Unscaled Zero Point Vibrational Energy (zpe) 17281.7 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 15629.6 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
0.37029 0.31352 0.17535

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 -0.322 -0.000
C2 0.079 0.155 -0.009
N3 1.013 -0.831 -0.030
O4 0.372 1.310 0.005
H5 -1.997 0.484 -0.323
H6 -1.504 -1.184 -0.642
H7 -1.636 -0.602 1.011
H8 1.964 -0.572 0.086
H9 0.772 -1.783 0.096

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51292.42462.37791.07931.08391.08563.33102.5835
C21.51291.35891.19192.12532.16712.13372.02242.0605
N32.42461.35892.23553.29872.61452.85560.99180.9895
O42.37791.19192.23552.53063.18702.94932.46583.1196
H51.07932.12533.29872.53061.76851.75754.11973.6034
H61.08392.16712.61453.18701.76851.75693.59562.4664
H71.08562.13372.85562.94931.75751.75693.71622.8336
H83.33102.02240.99182.46584.11973.59563.71621.6987
H92.58352.06050.98953.11963.60342.46642.83361.6987

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 115.083 C1 C2 O4 122.636
C2 C1 H5 109.001 C2 C1 H6 112.081
C2 C1 H7 109.295 C2 N3 H8 117.862
C2 N3 H9 121.869 N3 C2 O4 122.280
H5 C1 H6 109.686 H5 C1 H7 108.554
H6 C1 H7 108.158 H8 N3 H9 118.042
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 -0.712 -0.431   -0.586
2 C 0.598 0.995   0.990
3 N -0.879 -1.116   -1.120
4 O -0.474 -0.672   -0.652
5 H 0.255 0.115   0.160
6 H 0.221 0.116   0.160
7 H 0.236 0.106   0.150
8 H 0.380 0.453   0.454
9 H 0.375 0.434   0.444


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.337 -3.993 0.449 4.032
CHELPG        
AIM        
ESP -0.365 -4.010 0.482 4.055


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.665 -2.249 0.613
y -2.249 -26.247 -0.653
z 0.613 -0.653 -24.889
Traceless
 xyz
x 4.903 -2.249 0.613
y -2.249 -3.470 -0.653
z 0.613 -0.653 -1.433
Polar
3z2-r2-2.867
x2-y25.582
xy-2.249
xz0.613
yz-0.653


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.581 -0.026 0.004
y -0.026 5.043 -0.006
z 0.004 -0.006 3.141


<r2> (average value of r2) Å2
<r2> 74.106
(<r2>)1/2 8.609