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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: QCISD/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at QCISD/6-311G*
 hartrees
Energy at 0K-208.687335
Energy at 298.15K-208.693381
HF Energy-208.023506
Nuclear repulsion energy121.407090
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 QCISD/6-311G*
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 3747 3588 19.26      
2 A 3625 3471 22.76      
3 A 3169 3034 7.99      
4 A 3121 2988 14.76      
5 A 3050 2920 7.38      
6 A 1831 1753 303.34      
7 A 1701 1628 86.82      
8 A 1515 1450 10.15      
9 A 1507 1443 10.33      
10 A 1442 1381 91.24      
11 A 1370 1312 94.56      
12 A 1175 1125 1.29      
13 A 1078 1032 5.02      
14 A 1000 957 9.02      
15 A 867 830 2.51      
16 A 652 624 43.93      
17 A 566 542 25.20      
18 A 514 493 46.61      
19 A 437 418 120.04      
20 A 410 392 110.97      
21 A 72 69 0.60      

Unscaled Zero Point Vibrational Energy (zpe) 16424.5 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 15724.8 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 QCISD/6-311G*
ABC
0.35849 0.30887 0.17166

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.372 -0.301 -0.001
C2 0.079 0.155 -0.006
N3 1.001 -0.869 -0.062
O4 0.408 1.324 0.010
H5 -2.006 0.546 -0.265
H6 -1.540 -1.123 -0.705
H7 -1.648 -0.647 1.004
H8 1.952 -0.605 0.143
H9 0.726 -1.796 0.217

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.52082.44132.41041.09121.09541.09733.34102.5852
C21.52081.37931.21472.13722.17732.15512.02692.0671
N32.44131.37932.27263.33042.63362.86451.00761.0062
O42.41041.21472.27262.55153.20843.01652.47383.1423
H51.09122.13723.33042.55151.78861.77814.14253.6310
H61.09542.17732.63363.20841.78861.77683.63042.5371
H71.09732.15512.86453.01651.77811.77683.70192.7523
H83.34102.02691.00762.47384.14253.63043.70191.7106
H92.58522.06711.00623.14233.63102.53712.75231.7106

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 114.572 C1 C2 O4 123.185
C2 C1 H5 108.704 C2 C1 H6 111.635
C2 C1 H7 109.753 C2 N3 H8 115.361
C2 N3 H9 119.290 N3 C2 O4 122.228
H5 C1 H6 109.765 H5 C1 H7 108.676
H6 C1 H7 108.261 H8 N3 H9 116.304
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability