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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: mPW1PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at mPW1PW91/6-311G**
 hartrees
Energy at 0K-209.222357
Energy at 298.15K-209.228073
Nuclear repulsion energy122.032590
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 mPW1PW91/6-311G**
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 3782 3618 38.76      
2 A 3641 3483 35.22      
3 A 3162 3025 10.17      
4 A 3154 3018 13.63      
5 A 3072 2939 7.54      
6 A 1825 1746 360.16      
7 A 1634 1563 119.37      
8 A 1496 1431 14.42      
9 A 1473 1409 8.99      
10 A 1405 1344 100.93      
11 A 1358 1299 78.50      
12 A 1131 1082 0.38      
13 A 1057 1011 6.54      
14 A 989 947 7.38      
15 A 858 821 2.06      
16 A 683 654 13.25      
17 A 548 524 14.63      
18 A 527 504 8.16      
19 A 431 412 4.46      
20 A 205 196 204.18      
21 A 26 25 8.68      

Unscaled Zero Point Vibrational Energy (zpe) 16227.3 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 15524.7 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 mPW1PW91/6-311G**
ABC
0.36415 0.31128 0.17319

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.354 -0.346 -0.000
C2 -0.077 0.147 -0.003
N3 -1.030 -0.824 -0.002
O4 -0.352 1.327 0.000
H5 1.829 -0.019 0.926
H6 1.453 -1.428 -0.088
H7 1.884 0.132 -0.824
H8 -1.994 -0.540 0.012
H9 -0.809 -1.801 0.005

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51312.43162.38911.09101.09071.09003.35412.6070
C21.51311.36071.21172.12652.19762.12542.03722.0811
N32.43161.36072.25503.11202.55753.17481.00521.0021
O42.38911.21172.25502.72513.29512.66552.48663.1611
H51.09102.12653.11202.72511.77631.75793.96553.3139
H61.09072.19762.55753.29511.77631.77833.56172.2947
H71.09002.12543.17482.66551.75791.77834.02373.4169
H83.35412.03721.00522.48663.96553.56174.02371.7308
H92.60702.08111.00213.16113.31392.29473.41691.7308

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 115.493 C1 C2 O4 122.135
C2 C1 H5 108.407 C2 C1 H6 114.148
C2 C1 H7 108.380 C2 N3 H8 118.095
C2 N3 H9 122.752 N3 C2 O4 122.372
H5 C1 H6 109.014 H5 C1 H7 107.415
H6 C1 H7 109.266 H8 N3 H9 119.138
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.354      
2 C 0.324      
3 N -0.480      
4 O -0.380      
5 H 0.154      
6 H 0.110      
7 H 0.155      
8 H 0.240      
9 H 0.231      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.051 -3.790 0.048 3.790
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.202 2.321 -0.043
y 2.321 -25.686 -0.051
z -0.043 -0.051 -24.671
Traceless
 xyz
x 4.977 2.321 -0.043
y 2.321 -3.249 -0.051
z -0.043 -0.051 -1.727
Polar
3z2-r2-3.455
x2-y25.484
xy2.321
xz-0.043
yz-0.051


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.372 0.194 -0.000
y 0.194 5.494 -0.000
z -0.000 -0.000 3.319


<r2> (average value of r2) Å2
<r2> 74.602
(<r2>)1/2 8.637