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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: BLYP/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 BLYP/cc-pVTZ
 hartrees
Energy at 0K-209.233147
Energy at 298.15K-209.238646
Nuclear repulsion energy120.698615
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 BLYP/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 3616 3606 22.04      
2 A 3482 3472 16.82      
3 A 3043 3034 12.52      
4 A 3037 3028 15.71      
5 A 2974 2965 11.12      
6 A 1695 1690 297.65      
7 A 1572 1567 74.28      
8 A 1455 1451 6.61      
9 A 1440 1436 6.36      
10 A 1360 1356 27.10      
11 A 1290 1286 142.02      
12 A 1085 1082 0.28      
13 A 1025 1022 2.53      
14 A 951 948 11.64      
15 A 802 799 3.72      
16 A 653 651 7.23      
17 A 527 525 11.76      
18 A 507 506 5.87      
19 A 419 417 4.51      
20 A 121 121 163.62      
21 A 33 33 8.81      

Unscaled Zero Point Vibrational Energy (zpe) 15542.4 cm-1
Scaled (by 0.997) Zero Point Vibrational Energy (zpe) 15495.8 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 BLYP/cc-pVTZ
ABC
0.35625 0.30400 0.16921

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.372 -0.344 -0.000
C2 -0.077 0.147 -0.001
N3 -1.039 -0.837 -0.010
O4 -0.363 1.341 0.002
H5 1.858 0.003 0.919
H6 1.474 -1.433 -0.068
H7 1.898 0.118 -0.843
H8 -2.012 -0.556 0.025
H9 -0.813 -1.821 0.032

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.53002.46092.41951.09601.09591.09523.39082.6380
C21.53001.37661.22792.14752.21532.14622.05942.1023
N32.46091.37662.28063.15612.58333.19821.01331.0106
O42.41951.22792.28062.75143.32872.70602.51373.1945
H51.09602.14753.15612.75141.78411.76574.01133.3542
H61.09592.21532.58333.32871.78411.78513.59572.3222
H71.09522.14623.19822.70601.76571.78514.06103.4460
H83.39082.05941.01332.51374.01133.59574.06101.7425
H92.63802.10231.01063.19453.35422.32223.44601.7425

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 115.598 C1 C2 O4 122.261
C2 C1 H5 108.602 C2 C1 H6 114.036
C2 C1 H7 108.545 C2 N3 H8 118.225
C2 N3 H9 122.701 N3 C2 O4 122.141
H5 C1 H6 108.968 H5 C1 H7 107.375
H6 C1 H7 109.110 H8 N3 H9 118.854
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.286      
2 C 0.208      
3 N -0.203      
4 O -0.315      
5 H 0.114      
6 H 0.071      
7 H 0.115      
8 H 0.151      
9 H 0.144      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.020 -3.709 0.110 3.711
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.864 2.377 -0.148
y 2.377 -26.265 -0.169
z -0.148 -0.169 -25.150
Traceless
 xyz
x 4.843 2.377 -0.148
y 2.377 -3.257 -0.169
z -0.148 -0.169 -1.586
Polar
3z2-r2-3.172
x2-y25.400
xy2.377
xz-0.148
yz-0.169


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


<r2> (average value of r2) Å2
<r2> 76.324
(<r2>)1/2 8.736