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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G**
 hartrees
Energy at 0K-208.628537
Energy at 298.15K-208.634303
HF Energy-207.986828
Nuclear repulsion energy121.490629
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=FULL/6-31G**
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 3832 3581 40.72      
2 A 3685 3443 41.64      
3 A 3281 3066 4.35      
4 A 3230 3018 9.66      
5 A 3141 2935 5.57      
6 A 1832 1712 254.34      
7 A 1669 1560 97.64      
8 A 1546 1444 7.86      
9 A 1538 1438 9.54      
10 A 1456 1361 81.96      
11 A 1382 1292 88.51      
12 A 1152 1077 0.51      
13 A 1084 1013 3.62      
14 A 1008 942 8.73      
15 A 872 814 1.68      
16 A 644 602 20.31      
17 A 557 520 18.56      
18 A 523 489 14.66      
19 A 423 395 4.28      
20 A 283 265 254.88      
21 A 8 8 0.17      

Unscaled Zero Point Vibrational Energy (zpe) 16573.6 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 15486.4 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=FULL/6-31G**
ABC
0.35668 0.31173 0.17186

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.372 -0.282 -0.000
C2 0.078 0.150 0.001
N3 0.979 -0.883 -0.046
O4 0.431 1.325 0.007
H5 -1.997 0.602 -0.037
H6 -1.582 -0.915 -0.860
H7 -1.602 -0.849 0.901
H8 1.945 -0.643 0.093
H9 0.697 -1.823 0.163

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51302.42652.41571.08341.08801.08883.33802.5848
C21.51301.37161.22692.12352.15222.15182.03102.0746
N32.42651.37162.27573.32542.68772.74901.00541.0034
O42.41571.22692.27572.53373.13453.10792.48483.1634
H51.08342.12353.32542.53371.77511.77174.13593.6300
H61.08802.15222.68773.13451.77511.76213.66422.6585
H71.08882.15182.74903.10791.77171.76213.64382.6035
H83.33802.03101.00542.48484.13593.66423.64381.7191
H92.58482.07461.00343.16343.63002.65852.60351.7191

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 114.452 C1 C2 O4 123.351
C2 C1 H5 108.617 C2 C1 H6 110.618
C2 C1 H7 110.535 C2 N3 H8 116.553
C2 N3 H9 120.957 N3 C2 O4 122.172
H5 C1 H6 109.670 H5 C1 H7 109.296
H6 C1 H7 108.089 H8 N3 H9 117.687
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability