return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: HF/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 HF/cc-pVDZ
 hartrees
Energy at 0K-207.997152
Energy at 298.15K-208.003268
Nuclear repulsion energy122.627897
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 HF/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 3938 3575 47.72      
2 A 3802 3452 42.56      
3 A 3321 3015 8.98      
4 A 3262 2962 17.67      
5 A 3191 2897 8.99      
6 A 1983 1800 438.20      
7 A 1757 1595 114.58      
8 A 1582 1437 7.94      
9 A 1568 1424 10.13      
10 A 1528 1387 105.76      
11 A 1437 1304 103.56      
12 A 1235 1122 1.44      
13 A 1148 1043 9.30      
14 A 1059 962 11.91      
15 A 916 832 1.15      
16 A 686 623 29.86      
17 A 606 551 26.80      
18 A 542 492 16.80      
19 A 449 407 7.47      
20 A 348 316 235.00      
21 A 73 66 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 17214.7 cm-1
Scaled (by 0.908) Zero Point Vibrational Energy (zpe) 15631.0 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 HF/cc-pVDZ
ABC
0.36838 0.31301 0.17505

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.360 -0.311 -0.000
C2 0.078 0.155 -0.005
N3 1.006 -0.844 -0.054
O4 0.386 1.309 0.009
H5 -2.012 0.549 -0.129
H6 -1.537 -1.034 -0.798
H7 -1.589 -0.794 0.953
H8 1.953 -0.576 0.123
H9 0.749 -1.776 0.189

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51162.42652.38201.08631.09121.09273.32662.5754
C21.51161.36441.19482.13002.15582.14412.01712.0535
N32.42651.36442.24123.32472.65612.78430.99980.9974
O42.38201.19482.24122.51933.13663.03592.45433.1117
H51.08632.13003.32472.51931.78311.77594.12933.6234
H61.09122.15582.65613.13661.78311.76773.63812.5977
H71.09272.14412.78433.03591.77591.76773.64492.6484
H83.32662.01710.99982.45434.12933.63813.64491.7012
H92.57542.05350.99743.11173.62342.59772.64841.7012

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 114.974 C1 C2 O4 122.890
C2 C1 H5 109.045 C2 C1 H6 110.804
C2 C1 H7 109.786 C2 N3 H8 116.268
C2 N3 H9 119.996 N3 C2 O4 122.124
H5 C1 H6 109.943 H5 C1 H7 109.170
H6 C1 H7 108.071 H8 N3 H9 116.819
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.044 -0.352    
2 C 0.235 0.877    
3 N -0.226 -0.948    
4 O -0.374 -0.632    
5 H 0.066 0.098    
6 H 0.053 0.105    
7 H 0.054 0.083    
8 H 0.124 0.393    
9 H 0.112 0.375    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.421 -3.802 0.660 3.882
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.822 -2.083 0.905
y -2.083 -26.137 -1.007
z 0.905 -1.007 -24.533
Traceless
 xyz
x 4.513 -2.083 0.905
y -2.083 -3.459 -1.007
z 0.905 -1.007 -1.053
Polar
3z2-r2-2.107
x2-y25.315
xy-2.083
xz0.905
yz-1.007


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.618 -0.004 0.019
y -0.004 4.982 -0.024
z 0.019 -0.024 3.049


<r2> (average value of r2) Å2
<r2> 74.151
(<r2>)1/2 8.611