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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: B3LYP/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-209.302660
Energy at 298.15K-209.308367
Nuclear repulsion energy121.783667
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/6-311+G(3df,2p)
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 3730 3607 37.93      
2 A 3593 3475 33.06      
3 A 3116 3013 16.86      
4 A 3115 3013 4.47      
5 A 3044 2943 7.82      
6 A 1764 1706 384.94      
7 A 1622 1568 95.38      
8 A 1493 1443 8.26      
9 A 1475 1427 7.27      
10 A 1401 1355 48.20      
11 A 1340 1295 142.12      
12 A 1120 1083 0.28      
13 A 1055 1021 3.23      
14 A 986 954 11.49      
15 A 840 812 2.52      
16 A 670 648 9.06      
17 A 547 529 13.13      
18 A 526 508 5.61      
19 A 432 418 4.79      
20 A 219 212 186.30      
21 A 20 19 2.41      

Unscaled Zero Point Vibrational Energy (zpe) 16053.5 cm-1
Scaled (by 0.967) Zero Point Vibrational Energy (zpe) 15523.7 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/6-311+G(3df,2p)
ABC
0.36391 0.30876 0.17235

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311+G(3df,2p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.359 -0.349 -0.000
C2 0.075 0.145 -0.000
N3 1.038 -0.821 -0.000
O4 0.350 1.329 0.000
H5 -1.864 0.055 -0.876
H6 -1.451 -1.434 -0.003
H7 -1.863 0.050 0.880
H8 2.003 -0.536 0.000
H9 0.821 -1.800 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51652.44272.39451.08911.08911.08923.36692.6187
C21.51651.36401.21502.13002.19572.13002.04472.0837
N32.44271.36402.25703.15542.56283.15331.00641.0033
O42.39451.21502.25702.70073.29762.70272.49183.1644
H51.08912.13003.15542.70071.77491.75624.00913.3792
H61.08912.19572.56283.29761.77491.77483.56842.3006
H71.08922.13003.15332.70271.75621.77484.00713.3757
H83.36692.04471.00642.49184.00913.56844.00711.7311
H92.61872.08371.00333.16443.37922.30063.37571.7311

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 115.890 C1 C2 O4 122.089
C2 C1 H5 108.545 C2 C1 H6 113.842
C2 C1 H7 108.545 C2 N3 H8 118.441
C2 N3 H9 122.603 N3 C2 O4 122.021
H5 C1 H6 109.138 H5 C1 H7 107.453
H6 C1 H7 109.126 H8 N3 H9 118.956
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.338      
2 C 0.914      
3 N -0.691      
4 O -0.746      
5 H 0.163      
6 H 0.138      
7 H 0.163      
8 H 0.193      
9 H 0.203      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.156 -3.905 0.002 3.908
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.421 -0.201 -0.000
y -0.201 6.492 0.000
z -0.000 0.000 4.418


<r2> (average value of r2) Å2
<r2> 75.343
(<r2>)1/2 8.680