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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: B3LYP/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-209.307860
Energy at 298.15K-209.313590
Nuclear repulsion energy121.754694
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/aug-cc-pVTZ
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 3726 3605 37.45      
2 A 3590 3473 32.71      
3 A 3124 3022 9.95      
4 A 3115 3013 10.87      
5 A 3047 2948 8.00      
6 A 1755 1698 384.19      
7 A 1622 1569 91.38      
8 A 1491 1442 8.51      
9 A 1474 1426 7.37      
10 A 1399 1354 49.29      
11 A 1340 1296 141.53      
12 A 1120 1084 0.40      
13 A 1057 1023 3.22      
14 A 986 954 12.06      
15 A 840 813 2.47      
16 A 669 647 8.68      
17 A 546 528 13.23      
18 A 525 508 5.17      
19 A 432 418 4.70      
20 A 210 203 185.78      
21 A 36 35 2.43      

Unscaled Zero Point Vibrational Energy (zpe) 16051.2 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 15529.6 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/aug-cc-pVTZ
ABC
0.36343 0.30888 0.17228

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.359 -0.348 -0.000
C2 0.074 0.145 -0.003
N3 1.037 -0.822 -0.001
O4 0.350 1.330 0.000
H5 -1.891 0.131 -0.820
H6 -1.452 -1.429 -0.093
H7 -1.832 -0.030 0.928
H8 2.002 -0.536 0.010
H9 0.819 -1.800 -0.002

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51592.44262.39541.08851.08901.08973.36582.6170
C21.51591.36421.21682.12902.19462.12862.04392.0822
N32.44261.36422.25873.18672.56413.11811.00551.0025
O42.39541.21682.25872.67113.29702.73342.49213.1648
H51.08852.12903.18672.67111.77651.75674.03593.4264
H61.08902.19462.56413.29701.77651.77373.56862.3023
H71.08972.12863.11812.73341.75671.77373.97413.3202
H83.36582.04391.00552.49214.03593.56863.97411.7310
H92.61702.08221.00253.16483.42642.30233.32021.7310

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 115.912 C1 C2 O4 122.076
C2 C1 H5 108.551 C2 C1 H6 113.801
C2 C1 H7 108.450 C2 N3 H8 118.416
C2 N3 H9 122.498 N3 C2 O4 122.011
H5 C1 H6 109.339 H5 C1 H7 107.512
H6 C1 H7 109.001 H8 N3 H9 119.084
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.468      
2 C 0.552      
3 N -0.174      
4 O -0.654      
5 H 0.197      
6 H 0.212      
7 H 0.192      
8 H 0.087      
9 H 0.055      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.157 -3.891 0.021 3.894
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.740 -2.290 0.028
y -2.290 -26.781 -0.018
z 0.028 -0.018 -25.287
Traceless
 xyz
x 5.294 -2.290 0.028
y -2.290 -3.767 -0.018
z 0.028 -0.018 -1.527
Polar
3z2-r2-3.054
x2-y26.041
xy-2.290
xz0.028
yz-0.018


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.583 -0.206 -0.008
y -0.206 6.661 -0.001
z -0.008 -0.001 4.537


<r2> (average value of r2) Å2
<r2> 75.364
(<r2>)1/2 8.681