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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: B2PLYP/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/cc-pVTZ
 hartrees
Energy at 0K-209.134043
Energy at 298.15K-209.139716
HF Energy-208.880193
Nuclear repulsion energy121.817968
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/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 3756 3603 37.86      
2 A 3615 3468 35.91      
3 A 3171 3042 6.78      
4 A 3135 3008 13.10      
5 A 3067 2943 7.19      
6 A 1774 1702 317.74      
7 A 1628 1562 91.71      
8 A 1504 1443 7.88      
9 A 1486 1426 9.56      
10 A 1411 1354 70.36      
11 A 1350 1296 104.98      
12 A 1127 1081 0.45      
13 A 1063 1020 3.28      
14 A 989 949 10.90      
15 A 850 816 2.24      
16 A 662 635 8.61      
17 A 552 529 14.67      
18 A 520 499 4.89      
19 A 426 408 3.83      
20 A 161 155 190.14      
21 A 46 44 4.51      

Unscaled Zero Point Vibrational Energy (zpe) 16145.6 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 15490.1 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/cc-pVTZ
ABC
0.36143 0.31107 0.17256

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.369 -0.296 -0.000
C2 0.080 0.155 0.001
N3 0.990 -0.867 -0.031
O4 0.412 1.323 0.004
H5 -2.005 0.579 -0.059
H6 -1.570 -0.952 -0.847
H7 -1.598 -0.848 0.911
H8 1.962 -0.631 0.067
H9 0.716 -1.822 0.102

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51752.42702.40641.08361.08961.08983.34782.5856
C21.51751.36861.21392.12912.16062.15632.04032.0792
N32.42701.36862.26513.32612.68862.75381.00441.0023
O42.40641.21392.26512.52983.13453.09402.49523.1610
H51.08362.12913.32612.52981.77521.77314.14953.6327
H61.08962.16062.68863.13451.77521.76133.66212.6241
H71.08982.15632.75383.09401.77311.76133.66462.6377
H83.34782.04031.00442.49524.14953.66213.66461.7231
H92.58562.07921.00233.16103.63272.62412.63771.7231

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 114.371 C1 C2 O4 123.141
C2 C1 H5 108.727 C2 C1 H6 110.871
C2 C1 H7 110.512 C2 N3 H8 117.765
C2 N3 H9 121.793 N3 C2 O4 122.472
H5 C1 H6 109.541 H5 C1 H7 109.336
H6 C1 H7 107.834 H8 N3 H9 118.337
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.335      
2 C 0.213      
3 N -0.252      
4 O -0.323      
5 H 0.133      
6 H 0.094      
7 H 0.126      
8 H 0.174      
9 H 0.171      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.154 -3.772 0.262 3.784
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.815 -2.325 0.335
y -2.325 -26.040 -0.366
z 0.335 -0.366 -25.021
Traceless
 xyz
x 4.716 -2.325 0.335
y -2.325 -3.122 -0.366
z 0.335 -0.366 -1.593
Polar
3z2-r2-3.186
x2-y25.225
xy-2.325
xz0.335
yz-0.366


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.783 -0.150 0.003
y -0.150 5.943 -0.003
z 0.003 -0.003 3.774


<r2> (average value of r2) Å2
<r2> 75.027
(<r2>)1/2 8.662