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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: HSEh1PBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at HSEh1PBE/3-21G
 hartrees
Energy at 0K-207.840618
Energy at 298.15K-207.846773
HF Energy-207.840618
Nuclear repulsion energy121.028559
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 HSEh1PBE/3-21G
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 3706 3570 30.58      
2 A 3572 3441 28.79      
3 A 3204 3087 3.56      
4 A 3144 3029 8.77      
5 A 3077 2965 4.12      
6 A 1795 1730 230.04      
7 A 1679 1617 80.39      
8 A 1552 1495 12.57      
9 A 1527 1471 15.99      
10 A 1428 1375 46.60      
11 A 1369 1318 166.68      
12 A 1151 1109 0.28      
13 A 1094 1054 17.53      
14 A 1010 973 4.98      
15 A 837 806 2.17      
16 A 690 664 83.00      
17 A 554 533 98.61      
18 A 547 527 11.79      
19 A 500 482 163.90      
20 A 419 404 3.56      
21 A 82 79 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 16467.8 cm-1
Scaled (by 0.9633) Zero Point Vibrational Energy (zpe) 15863.5 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 HSEh1PBE/3-21G
ABC
0.35158 0.31202 0.17065

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.375 -0.286 0.000
C2 -0.085 0.146 -0.015
N3 -0.978 -0.884 -0.008
O4 -0.435 1.331 0.005
H5 1.791 -0.101 0.997
H6 1.525 -1.339 -0.255
H7 1.926 0.340 -0.705
H8 -1.967 -0.670 0.030
H9 -0.686 -1.850 0.037

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.52262.42732.42751.09641.09341.09253.36392.5869
C21.52261.36361.23572.14582.20382.13472.05192.0852
N32.42731.36362.28103.04762.55593.22751.01321.0095
O42.42751.23572.28102.82663.32272.65702.52013.1910
H51.09642.14583.04762.82661.78131.76363.92193.1805
H61.09342.20382.55593.32271.78131.78403.56742.2883
H71.09252.13473.22752.65701.76361.78404.08853.4885
H83.36392.05191.01322.52013.92193.56744.08851.7418
H92.58692.08521.00953.19103.18052.28833.48851.7418

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 114.378 C1 C2 O4 122.960
C2 C1 H5 108.942 C2 C1 H6 113.778
C2 C1 H7 108.306 C2 N3 H8 118.643
C2 N3 H9 122.275 N3 C2 O4 122.628
H5 C1 H6 108.867 H5 C1 H7 107.355
H6 C1 H7 109.399 H8 N3 H9 118.893
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.718      
2 C 0.628      
3 N -0.794      
4 O -0.507      
5 H 0.234      
6 H 0.234      
7 H 0.257      
8 H 0.336      
9 H 0.329      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.315 -3.829 0.000 3.842
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.612 2.624 -0.000
y 2.624 -24.781 -0.000
z -0.000 -0.000 -24.594
Traceless
 xyz
x 4.076 2.624 -0.000
y 2.624 -2.178 -0.000
z -0.000 -0.000 -1.898
Polar
3z2-r2-3.796
x2-y24.169
xy2.624
xz-0.000
yz-0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.385 0.021 0.000
y 0.021 4.930 0.000
z 0.000 0.000 2.412


<r2> (average value of r2) Å2
<r2> 75.230
(<r2>)1/2 8.674