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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: wB97X-D/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at wB97X-D/cc-pVDZ
 hartrees
Energy at 0K-209.167751
Energy at 298.15K 
HF Energy-209.167751
Nuclear repulsion energy121.597591
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 wB97X-D/cc-pVDZ
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 3797 3617 49.26      
2 A 3651 3478 43.73      
3 A 3178 3027 5.62      
4 A 3170 3020 14.74      
5 A 3081 2935 8.45      
6 A 1816 1730 428.70      
7 A 1640 1562 128.73      
8 A 1505 1434 14.81      
9 A 1488 1417 9.27      
10 A 1421 1354 85.30      
11 A 1368 1304 104.42      
12 A 1132 1078 0.90      
13 A 1066 1015 5.25      
14 A 1000 952 9.68      
15 A 860 819 1.31      
16 A 670 638 12.24      
17 A 552 526 13.40      
18 A 527 502 8.94      
19 A 441 420 4.64      
20 A 235 224 234.21      
21 A 14i 13i 3.06      

Unscaled Zero Point Vibrational Energy (zpe) 16291.0 cm-1
Scaled (by 0.9526) Zero Point Vibrational Energy (zpe) 15518.8 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 wB97X-D/cc-pVDZ
ABC
0.36275 0.30828 0.17198

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/cc-pVDZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.372 -0.302 -0.000
C2 0.078 0.153 0.001
N3 0.999 -0.861 -0.029
O4 0.406 1.325 0.004
H5 -2.015 0.575 -0.062
H6 -1.573 -0.962 -0.850
H7 -1.602 -0.853 0.918
H8 1.974 -0.618 0.062
H9 0.734 -1.824 0.096

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.52002.43622.41011.08911.09461.09483.36122.6005
C21.52001.37061.21672.13582.16692.16232.04742.0860
N32.43621.37062.26583.33862.70182.76791.00871.0067
O42.41011.21672.26582.53493.14273.10012.49753.1681
H51.08912.13583.33862.53491.78271.78024.16483.6522
H61.09462.16692.70183.14271.78271.77113.67822.6386
H71.09482.16232.76793.10011.78021.77113.68432.6601
H83.36122.04741.00872.49754.16483.67823.68431.7301
H92.60052.08601.00673.16813.65222.63862.66011.7301

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 114.775 C1 C2 O4 123.058
C2 C1 H5 108.767 C2 C1 H6 110.894
C2 C1 H7 110.521 C2 N3 H8 117.944
C2 N3 H9 121.932 N3 C2 O4 122.154
H5 C1 H6 109.444 H5 C1 H7 109.207
H6 C1 H7 107.984 H8 N3 H9 118.285
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.481      
2 C 0.409      
3 N -0.601      
4 O -0.520      
5 H 0.201      
6 H 0.144      
7 H 0.200      
8 H 0.334      
9 H 0.315      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.219 -4.079 0.039 4.085
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.259 -2.387 0.031
y -2.387 -26.541 -0.041
z 0.031 -0.041 -25.273
Traceless
 xyz
x 5.648 -2.387 0.031
y -2.387 -3.775 -0.041
z 0.031 -0.041 -1.873
Polar
3z2-r2-3.746
x2-y26.282
xy-2.387
xz0.031
yz-0.041


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.627 -0.216 -0.020
y -0.216 6.111 -0.001
z -0.020 -0.001 3.972


<r2> (average value of r2) Å2
<r2> 75.331
(<r2>)1/2 8.679