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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: B2PLYP/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B2PLYP/aug-cc-pVTZ
 hartrees
Energy at 0K-209.143153
Energy at 298.15K-209.148785
HF Energy-208.884459
Nuclear repulsion energy121.781931
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 B2PLYP/aug-cc-pVTZ
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 3751 3605 41.86      
2 A 3609 3468 37.99      
3 A 3151 3029 9.02      
4 A 3148 3026 9.76      
5 A 3070 2950 7.76      
6 A 1750 1682 367.92      
7 A 1629 1565 87.48      
8 A 1505 1446 8.66      
9 A 1488 1430 7.14      
10 A 1412 1357 56.05      
11 A 1350 1298 130.57      
12 A 1122 1079 0.53      
13 A 1064 1023 2.52      
14 A 992 954 12.14      
15 A 850 817 2.18      
16 A 670 644 8.23      
17 A 545 523 13.36      
18 A 528 508 5.21      
19 A 432 415 4.39      
20 A 163 156 187.31      
21 A 18 18 2.94      

Unscaled Zero Point Vibrational Energy (zpe) 16124.1 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 15495.3 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 B2PLYP/aug-cc-pVTZ
ABC
0.36265 0.30989 0.17241

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/aug-cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.369 -0.299 -0.000
C2 0.079 0.154 0.002
N3 0.994 -0.864 -0.030
O4 0.409 1.323 0.004
H5 -2.009 0.575 -0.060
H6 -1.569 -0.955 -0.847
H7 -1.597 -0.851 0.912
H8 1.966 -0.626 0.065
H9 0.724 -1.821 0.099

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51722.43012.40681.08391.08971.08993.35192.5898
C21.51721.36921.21492.13012.16002.15552.04312.0798
N32.43011.36922.26423.32942.69192.75671.00511.0027
O42.40681.21492.26422.53153.13473.09432.49573.1613
H51.08392.13013.32942.53151.77531.77324.15383.6371
H61.08972.16002.69193.13471.77531.76183.66572.6272
H71.08992.15552.75673.09431.77321.76183.66912.6433
H83.35192.04311.00512.49574.15383.66573.66911.7239
H92.58982.07981.00273.16133.63712.62722.64331.7239

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 114.588 C1 C2 O4 123.132
C2 C1 H5 108.813 C2 C1 H6 110.837
C2 C1 H7 110.466 C2 N3 H8 117.935
C2 N3 H9 121.764 N3 C2 O4 122.265
H5 C1 H6 109.521 H5 C1 H7 109.321
H6 C1 H7 107.862 H8 N3 H9 118.314
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.564      
2 C 0.500      
3 N -0.232      
4 O -0.652      
5 H 0.240      
6 H 0.257      
7 H 0.238      
8 H 0.127      
9 H 0.086      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.172 -3.871 0.009 3.875
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.821 -2.280 0.012
y -2.280 -26.747 -0.009
z 0.012 -0.009 -25.374
Traceless
 xyz
x 5.239 -2.280 0.012
y -2.280 -3.649 -0.009
z 0.012 -0.009 -1.590
Polar
3z2-r2-3.180
x2-y25.926
xy-2.280
xz0.012
yz-0.009


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.495 -0.211 -0.003
y -0.211 6.659 -0.000
z -0.003 -0.000 4.518


<r2> (average value of r2) Å2
<r2> 75.321
(<r2>)1/2 8.679