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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: B3LYP/SDD

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/SDD
 hartrees
Energy at 0K-209.191775
Energy at 298.15K-209.197829
Nuclear repulsion energy119.927827
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/SDD
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 28.37      
2 A 3607 3468 36.35      
3 A 3161 3039 27.95      
4 A 3158 3036 11.34      
5 A 3063 2944 9.58      
6 A 1692 1627 358.60      
7 A 1649 1586 59.69      
8 A 1515 1456 17.06      
9 A 1496 1438 14.97      
10 A 1436 1381 47.34      
11 A 1374 1320 175.86      
12 A 1122 1079 1.70      
13 A 1083 1041 15.63      
14 A 1006 967 7.15      
15 A 848 815 0.27      
16 A 685 658 119.46      
17 A 556 535 162.72      
18 A 528 508 12.86      
19 A 503 484 76.11      
20 A 432 416 5.37      
21 A 40 38 2.96      

Unscaled Zero Point Vibrational Energy (zpe) 16357.7 cm-1
Scaled (by 0.9613) Zero Point Vibrational Energy (zpe) 15724.6 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 B3LYP/SDD
ABC
0.34913 0.30261 0.16716

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

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 -1.033 -0.854 0.000
O4 -0.382 1.356 -0.000
H5 1.884 0.071 0.884
H6 1.480 -1.425 -0.002
H7 1.884 0.074 -0.882
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
C11.52542.46632.44031.09561.09541.09563.39472.6428
C21.52541.38211.25562.14682.20292.14672.06532.1040
N32.46631.38212.30403.18442.57613.18561.01251.0099
O42.44031.25562.30402.75043.34642.74922.52853.2188
H51.09562.14683.18442.75041.78461.76554.04293.4058
H61.09542.20292.57613.34641.78461.78463.58772.3127
H71.09562.14673.18562.74921.76551.78464.04393.4076
H83.39472.06531.01252.52854.04293.58774.04391.7443
H92.64282.10401.00993.21883.40582.31273.40761.7443

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 115.959 C1 C2 O4 122.387
C2 C1 H5 108.880 C2 C1 H6 113.386
C2 C1 H7 108.879 C2 N3 H8 118.372
C2 N3 H9 122.429 N3 C2 O4 121.654
H5 C1 H6 109.078 H5 C1 H7 107.361
H6 C1 H7 109.084 H8 N3 H9 119.199
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.686      
2 C 0.271      
3 N -0.616      
4 O -0.293      
5 H 0.242      
6 H 0.192      
7 H 0.242      
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
  0.310 -4.303 0.000 4.314
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.951 2.704 -0.000
y 2.704 -26.579 0.000
z -0.000 0.000 -25.076
Traceless
 xyz
x 5.877 2.704 -0.000
y 2.704 -4.065 0.000
z -0.000 0.000 -1.812
Polar
3z2-r2-3.623
x2-y26.628
xy2.704
xz-0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.922 0.191 0.000
y 0.191 5.526 -0.003
z 0.000 -0.003 2.971


<r2> (average value of r2) Å2
<r2> 76.830
(<r2>)1/2 8.765