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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: B3LYP/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 B3LYP/6-31G
 hartrees
Energy at 0K-209.152729
Energy at 298.15K-209.158808
Nuclear repulsion energy120.570477
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/6-31G
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 3747 3605 24.52      
2 A 3607 3470 26.95      
3 A 3176 3055 7.62      
4 A 3126 3007 18.29      
5 A 3057 2941 7.80      
6 A 1731 1665 293.90      
7 A 1673 1609 65.41      
8 A 1533 1475 11.10      
9 A 1516 1458 14.34      
10 A 1445 1390 37.22      
11 A 1388 1335 161.27      
12 A 1142 1099 1.60      
13 A 1094 1053 15.12      
14 A 1016 978 7.46      
15 A 856 823 1.21      
16 A 686 660 127.51      
17 A 554 533 75.88      
18 A 540 520 67.49      
19 A 499 480 108.03      
20 A 430 414 4.18      
21 A 41 40 0.87      

Unscaled Zero Point Vibrational Energy (zpe) 16427.8 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 15803.5 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/6-31G
ABC
0.35210 0.30683 0.16915

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.373 -0.314 -0.000
C2 0.074 0.141 -0.010
N3 1.011 -0.862 0.001
O4 0.399 1.346 0.001
H5 -1.989 0.465 -0.453
H6 -1.523 -1.255 -0.541
H7 -1.712 -0.455 1.034
H8 1.987 -0.609 0.025
H9 0.763 -1.838 -0.013

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51782.44642.42831.09101.09491.09703.37352.6237
C21.51781.37231.24772.13512.18632.15302.05472.0950
N32.44641.37232.29113.31152.62022.94001.00881.0067
O42.42831.24772.29112.58543.27832.96072.51873.2042
H51.09102.13513.31152.58541.78361.77004.14623.6146
H61.09492.18632.62023.27831.78361.77573.61312.4166
H71.09702.15302.94002.96071.77001.77573.83683.0214
H83.37352.05471.00882.51874.14623.61313.83681.7350
H92.62372.09501.00673.20423.61462.41663.02141.7350

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 115.569 C1 C2 O4 122.520
C2 C1 H5 108.755 C2 C1 H6 112.600
C2 C1 H7 109.812 C2 N3 H8 118.491
C2 N3 H9 122.684 N3 C2 O4 121.892
H5 C1 H6 109.361 H5 C1 H7 107.992
H6 C1 H7 108.217 H8 N3 H9 118.825
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.478      
2 C 0.504      
3 N -0.716      
4 O -0.459      
5 H 0.183      
6 H 0.140      
7 H 0.175      
8 H 0.331      
9 H 0.320      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.234 -4.091 0.086 4.099
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.253 -2.557 -0.028
y -2.557 -26.071 -0.053
z -0.028 -0.053 -24.814
Traceless
 xyz
x 5.190 -2.557 -0.028
y -2.557 -3.537 -0.053
z -0.028 -0.053 -1.652
Polar
3z2-r2-3.305
x2-y25.818
xy-2.557
xz-0.028
yz-0.053


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.781 -0.122 -0.008
y -0.122 5.429 0.004
z -0.008 0.004 2.690


<r2> (average value of r2) Å2
<r2> 76.037
(<r2>)1/2 8.720