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All results from a given calculation for CH2CHCONH2 (Acrylamide)

using model chemistry: PBEPBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A
Energy calculated at PBEPBE/3-21G
 hartrees
Energy at 0K-245.636311
Energy at 298.15K-245.642245
Nuclear repulsion energy161.260693
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 PBEPBE/3-21G
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 3576 3544 22.25      
2 A 3441 3410 25.05      
3 A 3189 3160 3.10      
4 A 3103 3075 13.25      
5 A 3086 3058 4.51      
6 A 1695 1679 111.08      
7 A 1638 1623 54.45      
8 A 1611 1596 60.64      
9 A 1421 1408 61.20      
10 A 1337 1325 35.94      
11 A 1275 1263 100.21      
12 A 1091 1081 4.69      
13 A 1029 1020 3.37      
14 A 1003 994 44.83      
15 A 968 960 16.37      
16 A 822 814 53.81      
17 A 781 774 7.78      
18 A 636 630 39.31      
19 A 605 599 4.00      
20 A 489 484 142.72      
21 A 465 460 5.97      
22 A 442 438 114.95      
23 A 277 275 9.32      
24 A 149 148 6.59      

Unscaled Zero Point Vibrational Energy (zpe) 17063.5 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 16908.2 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 PBEPBE/3-21G
ABC
0.34327 0.14103 0.09996

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.794 -0.681 0.000
C2 -0.473 0.128 -0.000
N3 -1.623 -0.633 -0.000
O4 -0.483 1.381 0.000
C5 1.970 -0.037 0.000
H6 0.726 -1.774 0.000
H7 -2.525 -0.152 -0.000
H8 -1.605 -1.654 -0.000
H9 1.960 1.058 0.000
H10 2.931 -0.557 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 C5 H6 H7 H8 H9 H10
C11.50312.41702.42541.34061.09543.36002.58892.09432.1406
C21.50311.37871.25342.44862.24842.07022.11112.60543.4721
N32.41701.37872.31453.64162.61101.02211.02093.96234.5542
O42.42541.25342.31452.83363.37912.55293.23602.46473.9255
C51.34062.44863.64162.83362.13624.49563.92361.09591.0922
H61.09542.24842.61103.37912.13623.63262.33423.08982.5188
H73.36002.07021.02212.55294.49563.63261.76094.64525.4701
H82.58892.11111.02093.23603.92362.33421.76094.48004.6669
H92.09432.60543.96232.46471.09593.08984.64524.48001.8841
H102.14063.47214.55423.92551.09222.51885.47014.66691.8841

picture of Acrylamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 113.936 C1 C2 O4 123.007
C1 C5 H9 118.190 C1 C5 H10 122.939
C2 C1 C5 118.763 C2 C1 H6 118.999
C2 N3 H7 118.397 C2 N3 H8 122.532
N3 C2 O4 123.057 C5 C1 H6 122.238
H7 N3 H8 119.071 H9 C5 H10 118.871
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.267      
2 C 0.585      
3 N -0.739      
4 O -0.477      
5 C -0.357      
6 H 0.187      
7 H 0.321      
8 H 0.313      
9 H 0.231      
10 H 0.203      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.876 -3.336 -0.000 3.449
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.356 2.898 0.001
y 2.898 -29.376 0.000
z 0.001 0.000 -31.741
Traceless
 xyz
x 9.203 2.898 0.001
y 2.898 -2.828 0.000
z 0.001 0.000 -6.375
Polar
3z2-r2-12.750
x2-y28.020
xy2.898
xz0.001
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.389 0.801 0.000
y 0.801 6.099 0.000
z 0.000 0.000 1.746


<r2> (average value of r2) Å2
<r2> 116.078
(<r2>)1/2 10.774