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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: B3LYP/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B3LYP/LANL2DZ
 hartrees
Energy at 0K-209.191202
Energy at 298.15K-209.197256
Nuclear repulsion energy119.940284
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 B3LYP/LANL2DZ
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 3762 3616 28.48      
2 A 3607 3467 36.79      
3 A 3161 3039 27.67      
4 A 3158 3035 11.30      
5 A 3063 2944 9.43      
6 A 1691 1626 356.35      
7 A 1649 1585 59.70      
8 A 1515 1456 17.11      
9 A 1496 1438 14.95      
10 A 1436 1381 47.78      
11 A 1374 1321 175.11      
12 A 1123 1079 1.76      
13 A 1083 1041 15.76      
14 A 1006 967 7.16      
15 A 849 816 0.26      
16 A 685 659 121.41      
17 A 558 536 165.22      
18 A 529 508 12.84      
19 A 504 484 72.48      
20 A 433 416 5.41      
21 A 39 37 2.95      

Unscaled Zero Point Vibrational Energy (zpe) 16359.9 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 15725.1 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 B3LYP/LANL2DZ
ABC
0.34924 0.30268 0.16720

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/LANL2DZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.378 -0.334 -0.000
C2 -0.072 0.139 0.000
N3 -1.032 -0.854 -0.000
O4 -0.382 1.356 -0.000
H5 1.883 0.071 0.884
H6 1.480 -1.425 -0.003
H7 1.884 0.075 -0.881
H8 -2.007 -0.581 0.000
H9 -0.796 -1.836 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.52502.46602.44011.09561.09531.09563.39432.6428
C21.52501.38171.25582.14652.20262.14632.06492.1037
N32.46601.38172.30363.18382.57603.18541.01251.0098
O42.44011.25582.30362.75033.34622.74842.52793.2186
H51.09562.14653.18382.75031.78461.76554.04223.4052
H61.09532.20262.57603.34621.78461.78463.58762.3129
H71.09562.14633.18542.74841.76551.78464.04353.4080
H83.39432.06491.01252.52794.04223.58764.04351.7442
H92.64282.10371.00983.21863.40522.31293.40801.7442

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 115.980 C1 C2 O4 122.379
C2 C1 H5 108.880 C2 C1 H6 113.387
C2 C1 H7 108.870 C2 N3 H8 118.372
C2 N3 H9 122.435 N3 C2 O4 121.641
H5 C1 H6 109.087 H5 C1 H7 107.362
H6 C1 H7 109.082 H8 N3 H9 119.193
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.684      
2 C 0.269      
3 N -0.617      
4 O -0.296      
5 H 0.243      
6 H 0.193      
7 H 0.243      
8 H 0.335      
9 H 0.313      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.311 -4.310 0.001 4.321
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.933 2.707 -0.000
y 2.707 -26.576 -0.001
z -0.000 -0.001 -25.079
Traceless
 xyz
x 5.895 2.707 -0.000
y 2.707 -4.070 -0.001
z -0.000 -0.001 -1.825
Polar
3z2-r2-3.650
x2-y26.643
xy2.707
xz-0.000
yz-0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.916 0.191 0.001
y 0.191 5.528 -0.003
z 0.001 -0.003 2.960


<r2> (average value of r2) Å2
<r2> 76.811
(<r2>)1/2 8.764