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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: BLYP/6-31G**

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/6-31G**
 hartrees
Energy at 0K-209.148965
Energy at 298.15K-209.154482
Nuclear repulsion energy120.207703
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/6-31G**
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 3627 3599 18.11      
2 A 3487 3461 14.79      
3 A 3065 3041 12.59      
4 A 3056 3032 18.54      
5 A 2983 2960 10.65      
6 A 1733 1719 264.32      
7 A 1576 1564 80.62      
8 A 1467 1456 6.00      
9 A 1451 1440 4.50      
10 A 1369 1359 27.42      
11 A 1298 1288 131.33      
12 A 1088 1080 0.18      
13 A 1025 1017 5.36      
14 A 951 944 7.54      
15 A 806 799 3.42      
16 A 654 649 13.56      
17 A 522 518 13.15      
18 A 503 499 7.82      
19 A 416 413 4.34      
20 A 138 136 203.96      
21 A 43 43 6.08      

Unscaled Zero Point Vibrational Energy (zpe) 15628.0 cm-1
Scaled (by 0.9923) Zero Point Vibrational Energy (zpe) 15507.7 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 BLYP/6-31G**
ABC
0.35269 0.30207 0.16789

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.379 -0.334 0.000
C2 0.078 0.148 -0.001
N3 1.032 -0.851 -0.024
O4 0.380 1.345 0.004
H5 -1.908 0.145 -0.837
H6 -1.493 -1.426 -0.084
H7 -1.864 0.004 0.929
H8 2.008 -0.573 0.053
H9 0.799 -1.833 0.084

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.53572.46672.43201.09981.10061.10083.39592.6459
C21.53571.38211.23372.15512.22572.15832.06062.1105
N32.46671.38212.29123.20932.59023.16671.01701.0150
O42.43201.23372.29122.71683.34532.77272.51633.2066
H51.09982.15513.20932.71681.79091.77174.07933.4772
H61.10062.22572.59023.34531.79091.79093.60522.3338
H71.10082.15833.16672.77271.77171.79094.01133.3440
H83.39592.06061.01702.51634.07933.60524.01131.7459
H92.64592.11051.01503.20663.47722.33383.34401.7459

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 115.330 C1 C2 O4 122.465
C2 C1 H5 108.585 C2 C1 H6 114.165
C2 C1 H7 108.777 C2 N3 H8 117.583
C2 N3 H9 122.656 N3 C2 O4 122.202
H5 C1 H6 108.962 H5 C1 H7 107.242
H6 C1 H7 108.889 H8 N3 H9 118.463
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.348      
2 C 0.511      
3 N -0.545      
4 O -0.466      
5 H 0.134      
6 H 0.082      
7 H 0.131      
8 H 0.256      
9 H 0.245      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.041 -3.558 0.287 3.570
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.245 -2.367 0.375
y -2.367 -25.422 -0.439
z 0.375 -0.439 -24.530
Traceless
 xyz
x 4.731 -2.367 0.375
y -2.367 -3.035 -0.439
z 0.375 -0.439 -1.697
Polar
3z2-r2-3.393
x2-y25.177
xy-2.367
xz0.375
yz-0.439


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> 76.368
(<r2>)1/2 8.739