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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: mPW1PW91/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 mPW1PW91/cc-pVDZ
 hartrees
Energy at 0K-209.175073
Energy at 298.15K-209.180860
Nuclear repulsion energy121.680040
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 mPW1PW91/cc-pVDZ
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 3752 3596 37.09      
2 A 3609 3458 30.27      
3 A 3206 3072 3.82      
4 A 3153 3022 9.01      
5 A 3071 2943 5.82      
6 A 1841 1764 321.22      
7 A 1605 1538 116.02      
8 A 1462 1401 9.85      
9 A 1448 1388 11.73      
10 A 1405 1346 124.92      
11 A 1334 1279 33.56      
12 A 1128 1081 0.48      
13 A 1044 1000 5.36      
14 A 974 933 5.29      
15 A 863 827 2.16      
16 A 649 622 11.12      
17 A 559 535 17.42      
18 A 517 496 7.21      
19 A 417 399 3.80      
20 A 245 235 200.43      
21 A 54 51 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 16167.1 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 15493.0 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 mPW1PW91/cc-pVDZ
ABC
0.36059 0.31117 0.17264

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVDZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.367 -0.296 -0.001
C2 0.078 0.152 -0.006
N3 0.992 -0.865 -0.041
O4 0.412 1.320 0.007
H5 -2.003 0.567 -0.221
H6 -1.550 -1.091 -0.738
H7 -1.636 -0.686 0.993
H8 1.962 -0.615 0.101
H9 0.720 -1.820 0.136

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51352.42762.40351.09451.09911.10063.34622.5887
C21.51351.36701.21542.13392.17512.15342.03622.0783
N32.42761.36702.26123.32522.64592.82941.01131.0090
O42.40351.21542.26122.54003.19613.03162.48133.1581
H51.09452.13393.32522.54001.79471.78344.15043.6396
H61.09912.17512.64593.19611.79471.77903.64212.5398
H71.10062.15342.82943.03161.78341.77903.70722.7515
H83.34622.03621.01132.48134.15043.64213.70721.7308
H92.58872.07831.00903.15813.63962.53982.75151.7308

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 114.773 C1 C2 O4 123.099
C2 C1 H5 108.747 C2 C1 H6 111.737
C2 C1 H7 109.914 C2 N3 H8 116.987
C2 N3 H9 121.287 N3 C2 O4 122.124
H5 C1 H6 109.793 H5 C1 H7 108.663
H6 C1 H7 107.937 H8 N3 H9 117.893
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.081      
2 C 0.075      
3 N -0.131      
4 O -0.276      
5 H 0.069      
6 H 0.057      
7 H 0.069      
8 H 0.113      
9 H 0.103      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.195 -3.672 0.486 3.709
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.537 -2.270 0.588
y -2.270 -25.123 -0.720
z 0.588 -0.720 -24.393
Traceless
 xyz
x 4.221 -2.270 0.588
y -2.270 -2.658 -0.720
z 0.588 -0.720 -1.563
Polar
3z2-r2-3.126
x2-y24.586
xy-2.270
xz0.588
yz-0.720


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


<r2> (average value of r2) Å2
<r2> 74.682
(<r2>)1/2 8.642