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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: B3LYP/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 B3LYP/cc-pVDZ
 hartrees
Energy at 0K-209.226708
Energy at 298.15K-209.232554
Nuclear repulsion energy121.155727
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 B3LYP/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 3690 3580 26.60      
2 A 3555 3448 22.49      
3 A 3162 3068 5.58      
4 A 3107 3013 12.82      
5 A 3038 2947 7.13      
6 A 1805 1751 299.25      
7 A 1595 1547 94.79      
8 A 1457 1413 8.17      
9 A 1443 1399 9.52      
10 A 1386 1344 101.46      
11 A 1327 1287 61.30      
12 A 1124 1091 0.55      
13 A 1039 1008 4.56      
14 A 969 940 7.30      
15 A 846 821 3.07      
16 A 642 623 13.61      
17 A 556 540 17.74      
18 A 510 494 9.07      
19 A 417 404 4.63      
20 A 302 293 192.91      
21 A 57 55 0.22      

Unscaled Zero Point Vibrational Energy (zpe) 16013.1 cm-1
Scaled (by 0.97) Zero Point Vibrational Energy (zpe) 15532.7 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 B3LYP/cc-pVDZ
ABC
0.35770 0.30792 0.17106

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVDZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.375 -0.297 -0.001
C2 0.079 0.153 -0.006
N3 0.998 -0.869 -0.048
O4 0.414 1.325 0.008
H5 -2.011 0.558 -0.262
H6 -1.551 -1.122 -0.709
H7 -1.654 -0.649 1.007
H8 1.966 -0.617 0.119
H9 0.725 -1.821 0.161

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.52202.44122.41491.09691.10161.10333.35852.5997
C21.52201.37501.21932.14402.18542.16212.04192.0838
N32.44121.37502.27143.33682.64492.86291.01461.0124
O42.41491.21932.27142.55763.21943.02902.48863.1655
H51.09692.14403.33682.55761.79851.78684.16433.6500
H61.10162.18542.64493.21941.79851.78273.64822.5344
H71.10332.16212.86293.02901.78681.78273.72822.7837
H83.35852.04191.01462.48864.16433.64823.72821.7303
H92.59972.08381.01243.16553.65002.53442.78371.7303

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 114.757 C1 C2 O4 123.134
C2 C1 H5 108.824 C2 C1 H6 111.811
C2 C1 H7 109.859 C2 N3 H8 116.606
C2 N3 H9 120.827 N3 C2 O4 122.103
H5 C1 H6 109.782 H5 C1 H7 108.609
H6 C1 H7 107.902 H8 N3 H9 117.215
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.012      
2 C 0.040      
3 N -0.085      
4 O -0.253      
5 H 0.045      
6 H 0.032      
7 H 0.047      
8 H 0.098      
9 H 0.088      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.187 -3.583 0.560 3.631
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.834 -2.244 0.675
y -2.244 -25.350 -0.834
z 0.675 -0.834 -24.479
Traceless
 xyz
x 4.080 -2.244 0.675
y -2.244 -2.693 -0.834
z 0.675 -0.834 -1.387
Polar
3z2-r2-2.774
x2-y24.515
xy-2.244
xz0.675
yz-0.834


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.316 -0.106 0.033
y -0.106 5.468 -0.027
z 0.033 -0.027 3.170


<r2> (average value of r2) Å2
<r2> 75.347
(<r2>)1/2 8.680