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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: HF/aug-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 HF/aug-cc-pVDZ
 hartrees
Energy at 0K-208.013560
Energy at 298.15K-208.019319
Nuclear repulsion energy122.587742
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 HF/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3966 3611 53.38      
2 A 3822 3481 51.59      
3 A 3307 3012 11.12      
4 A 3248 2957 17.93      
5 A 3182 2898 9.61      
6 A 1925 1753 480.10      
7 A 1763 1605 115.61      
8 A 1581 1440 7.86      
9 A 1567 1427 11.38      
10 A 1525 1388 97.73      
11 A 1434 1306 118.28      
12 A 1217 1108 1.22      
13 A 1147 1044 5.00      
14 A 1058 964 16.15      
15 A 911 830 0.49      
16 A 684 623 13.27      
17 A 598 544 22.74      
18 A 557 507 4.70      
19 A 445 406 4.49      
20 A 140 127 230.95      
21 A 32 30 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 17053.8 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 15529.2 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 HF/aug-cc-pVDZ
ABC
0.36887 0.31230 0.17467

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.362 -0.317 -0.000
C2 0.076 0.152 -0.006
N3 1.011 -0.835 -0.021
O4 0.380 1.312 0.003
H5 -2.009 0.533 -0.187
H6 -1.527 -1.083 -0.757
H7 -1.601 -0.743 0.975
H8 1.969 -0.577 0.062
H9 0.764 -1.793 0.064

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51202.42912.38451.08461.09011.09113.34162.5885
C21.51201.35951.19972.12742.15882.13872.02972.0636
N32.42911.35952.23813.32002.65512.79740.99540.9931
O42.38451.19972.23812.51983.15513.01502.46943.1292
H51.08462.12743.32002.51981.78061.77364.13783.6280
H61.09012.15882.65513.15511.78061.76733.62692.5352
H71.09112.13872.79743.01501.77361.76733.68882.7432
H83.34162.02970.99542.46944.13783.62693.68881.7122
H92.58852.06360.99313.12923.62802.53522.74321.7122

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 115.440 C1 C2 O4 122.709
C2 C1 H5 108.914 C2 C1 H6 111.090
C2 C1 H7 109.430 C2 N3 H8 118.237
C2 N3 H9 121.827 N3 C2 O4 121.851
H5 C1 H6 109.927 H5 C1 H7 109.211
H6 C1 H7 108.243 H8 N3 H9 118.868
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.353      
2 C 0.691      
3 N -0.195      
4 O -0.741      
5 H -0.050      
6 H -0.008      
7 H 0.037      
8 H -0.045      
9 H -0.042      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.464 -4.074 0.263 4.109
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.723 -2.300 0.399
y -2.300 -26.740 -0.405
z 0.399 -0.405 -25.201
Traceless
 xyz
x 5.248 -2.300 0.399
y -2.300 -3.778 -0.405
z 0.399 -0.405 -1.470
Polar
3z2-r2-2.939
x2-y26.017
xy-2.300
xz0.399
yz-0.405


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.570 -0.039 -0.014
y -0.039 5.917 0.005
z -0.014 0.005 4.165


<r2> (average value of r2) Å2
<r2> 74.516
(<r2>)1/2 8.632