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All results from a given calculation for CH3CONH2 (Acetamide)

using model chemistry: CID/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 CID/6-31G*
 hartrees
Energy at 0K-208.510952
Energy at 298.15K-208.516848
HF Energy-207.975386
Nuclear repulsion energy122.078313
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 CID/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 3852 3558 44.50      
2 A 3726 3441 46.37      
3 A 3292 3041 5.24      
4 A 3237 2990 11.31      
5 A 3165 2924 5.29      
6 A 1924 1777 350.61      
7 A 1720 1589 121.58      
8 A 1573 1453 9.14      
9 A 1567 1447 9.16      
10 A 1505 1390 94.73      
11 A 1425 1317 98.42      
12 A 1197 1105 0.53      
13 A 1122 1036 7.20      
14 A 1040 961 8.60      
15 A 899 831 0.94      
16 A 666 615 25.64      
17 A 581 536 22.60      
18 A 533 493 14.24      
19 A 435 402 5.25      
20 A 287 265 290.96      
21 A 41 38 0.40      

Unscaled Zero Point Vibrational Energy (zpe) 16893.1 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 15604.2 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 CID/6-31G*
ABC
0.36289 0.31250 0.17353

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.365 -0.301 -0.000
C2 0.077 0.152 -0.004
N3 0.996 -0.858 -0.044
O4 0.403 1.318 0.007
H5 -2.002 0.567 -0.133
H6 -1.551 -1.020 -0.797
H7 -1.606 -0.778 0.950
H8 1.956 -0.604 0.101
H9 0.733 -1.805 0.154

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51122.42552.39751.08471.08931.09053.33632.5861
C21.51121.36551.21142.12372.15702.14692.02822.0699
N32.42551.36552.25603.31992.66072.78651.00431.0024
O42.39751.21142.25602.52353.15183.05322.47313.1441
H51.08472.12373.31992.52351.77801.77164.13423.6316
H61.08932.15702.66073.15181.77801.76473.64452.5962
H71.09052.14692.78653.05321.77161.76473.66642.6763
H83.33632.02821.00432.47314.13423.64453.66641.7148
H92.58612.06991.00243.14413.63162.59622.67631.7148

picture of Acetamide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 114.854 C1 C2 O4 123.049
C2 C1 H5 108.681 C2 C1 H6 111.047
C2 C1 H7 110.165 C2 N3 H8 116.891
C2 N3 H9 121.121 N3 C2 O4 122.089
H5 C1 H6 109.740 H5 C1 H7 109.072
H6 C1 H7 108.112 H8 N3 H9 117.419
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability