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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: MP2/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at MP2/LANL2DZ
 hartrees
Energy at 0K-208.319221
Energy at 298.15K-208.325193
HF Energy-207.916495
Nuclear repulsion energy118.715402
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 MP2/LANL2DZ
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 3760 3621 35.20      
2 A 3602 3469 48.71      
3 A 3160 3043 15.78      
4 A 3144 3028 22.71      
5 A 3041 2929 13.15      
6 A 1701 1638 202.65      
7 A 1642 1581 142.83      
8 A 1533 1476 18.84      
9 A 1515 1460 13.23      
10 A 1460 1407 34.44      
11 A 1364 1313 194.80      
12 A 1139 1097 1.55      
13 A 1098 1057 6.24      
14 A 1015 978 17.78      
15 A 836 805 1.44      
16 A 663 639 100.89      
17 A 540 520 107.21      
18 A 521 502 19.08      
19 A 448 432 185.22      
20 A 425 410 3.84      
21 A 36 34 2.37      

Unscaled Zero Point Vibrational Energy (zpe) 16321.2 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 15719.0 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 MP2/LANL2DZ
ABC
0.34016 0.29757 0.16367

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.397 -0.317 0.001
C2 0.073 0.143 -0.007
N3 1.023 -0.882 0.000
O4 0.413 1.369 0.000
H5 -1.959 0.276 -0.738
H6 -1.503 -1.389 -0.234
H7 -1.832 -0.122 0.996
H8 2.009 -0.633 0.019
H9 0.763 -1.862 -0.010

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.54032.48592.47381.10131.10261.10333.42062.6561
C21.54031.39811.27272.16382.20942.16882.08572.1202
N32.48591.39812.33273.28362.58743.11831.01631.0135
O42.47381.27272.33272.71453.36652.87332.56043.2498
H51.10132.16383.28362.71451.79831.78364.14043.5370
H61.10262.20942.58743.36651.79831.79593.60092.3258
H71.10332.16883.11832.87331.78361.79593.99583.2825
H83.42062.08571.01632.56044.14043.60093.99581.7495
H92.65612.12021.01353.24983.53702.32583.28251.7495

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 115.479 C1 C2 O4 122.867
C2 C1 H5 108.859 C2 C1 H6 112.374
C2 C1 H7 109.132 C2 N3 H8 118.657
C2 N3 H9 122.275 N3 C2 O4 121.646
H5 C1 H6 109.370 H5 C1 H7 108.006
H6 C1 H7 109.003 H8 N3 H9 119.067
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability