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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: QCISD/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-208.875789
Energy at 298.15K 
HF Energy-208.063511
Nuclear repulsion energy121.841179
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/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD/aug-cc-pVTZ
ABC
0.36181 0.31101 0.17277

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/aug-cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.368 -0.299 0.000
C2 0.079 0.155 0.001
N3 0.994 -0.862 -0.032
O4 0.407 1.322 0.004
H5 -2.009 0.575 -0.058
H6 -1.564 -0.956 -0.849
H7 -1.591 -0.854 0.913
H8 1.964 -0.624 0.071
H9 0.721 -1.817 0.105

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51612.42822.40431.08571.09131.09143.34842.5838
C21.51611.36861.21312.13062.15752.15302.04092.0759
N32.42821.36862.26253.32942.68712.75191.00421.0019
O42.40431.21312.26252.53023.13113.09082.49333.1563
H51.08572.13063.32942.53021.77951.77754.15213.6330
H61.09132.15752.68713.13111.77951.76593.66112.6215
H71.09142.15302.75193.09081.77751.76593.66022.6314
H83.34842.04091.00422.49334.15213.66113.66021.7231
H92.58382.07591.00193.15633.63302.62152.63141.7231

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 114.552 C1 C2 O4 123.133
C2 C1 H5 108.821 C2 C1 H6 110.619
C2 C1 H7 110.257 C2 N3 H8 117.852
C2 N3 H9 121.487 N3 C2 O4 122.300
H5 C1 H6 109.657 H5 C1 H7 109.460
H6 C1 H7 108.013 H8 N3 H9 118.392
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability