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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: B97D3/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at B97D3/6-311+G(3df,2p)
 hartrees
Energy at 0K-209.174166
Energy at 298.15K 
HF Energy-209.174166
Nuclear repulsion energy121.279067
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 B97D3/6-311+G(3df,2p)
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 3672 3624 26.77      
2 A 3532 3486 18.98      
3 A 3082 3042 10.49      
4 A 3058 3019 16.65      
5 A 2990 2951 11.18      
6 A 1720 1697 356.17      
7 A 1587 1566 81.19      
8 A 1461 1442 7.03      
9 A 1444 1425 8.04      
10 A 1363 1346 42.08      
11 A 1302 1285 138.70      
12 A 1093 1079 0.14      
13 A 1025 1012 2.09      
14 A 957 945 11.48      
15 A 817 807 3.11      
16 A 653 644 5.98      
17 A 535 528 11.18      
18 A 509 502 5.22      
19 A 424 418 4.40      
20 A 169 167 175.07      
21 A 20i 20i 3.39      

Unscaled Zero Point Vibrational Energy (zpe) 15686.0 cm-1
Scaled (by 0.987) Zero Point Vibrational Energy (zpe) 15482.1 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 B97D3/6-311+G(3df,2p)
ABC
0.35933 0.30743 0.17096

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-311+G(3df,2p)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.367 -0.334 -0.001
C2 0.076 0.148 -0.006
N3 1.026 -0.839 -0.005
O4 0.372 1.333 0.001
H5 -1.939 0.264 -0.714
H6 -1.476 -1.395 -0.244
H7 -1.789 -0.157 0.994
H8 1.998 -0.573 0.030
H9 0.789 -1.818 0.008

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.52202.44592.40941.09181.09381.09473.37402.6178
C21.52201.37011.22122.13902.20142.13862.05292.0914
N32.44591.37012.26873.24152.57333.06401.00901.0065
O42.40941.22122.26872.64523.30402.80702.50523.1783
H51.09182.13903.24152.64521.78481.76514.09313.5065
H61.09382.20142.57333.30401.78481.77803.58022.3178
H71.09472.13863.06402.80701.76511.77803.92993.2214
H83.37402.05291.00902.50524.09313.58023.92991.7355
H92.61782.09141.00653.17833.50652.31783.22141.7355

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 114.427 C1 C2 O4 123.212
C2 C1 H5 108.925 C2 C1 H6 111.034
C2 C1 H7 110.648 C2 N3 H8 118.040
C2 N3 H9 121.966 N3 C2 O4 122.346
H5 C1 H6 109.371 H5 C1 H7 109.196
H6 C1 H7 107.636 H8 N3 H9 118.093
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.270      
2 C 0.917      
3 N -0.642      
4 O -0.742      
5 H 0.134      
6 H 0.115      
7 H 0.138      
8 H 0.167      
9 H 0.182      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.159 -3.820 0.085 3.824
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.746 -2.394 0.112
y -2.394 -26.453 -0.109
z 0.112 -0.109 -25.219
Traceless
 xyz
x 5.090 -2.394 0.112
y -2.394 -3.470 -0.109
z 0.112 -0.109 -1.620
Polar
3z2-r2-3.240
x2-y25.706
xy-2.394
xz0.112
yz-0.109


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.760 -0.208 -0.027
y -0.208 6.766 -0.001
z -0.027 -0.001 4.556


<r2> (average value of r2) Å2
<r2> 75.737
(<r2>)1/2 8.703