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 CH3C(OH)=NH (Ethaninidic acid)

using model chemistry: MP4/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/3-21G
 hartrees
Energy at 0K-207.233535
Energy at 298.15K-207.239776
HF Energy-206.781317
Nuclear repulsion energy119.241894
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 MP4/3-21G
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' 3456 3352        
2 A' 3340 3239        
3 A' 3128 3034        
4 A' 3048 2956        
5 A' 1679 1629        
6 A' 1559 1512        
7 A' 1465 1420        
8 A' 1437 1394        
9 A' 1240 1203        
10 A' 1092 1059        
11 A' 996 966        
12 A' 815 791        
13 A' 531 515        
14 A' 398 386        
15 A" 3117 3022        
16 A" 1555 1508        
17 A" 1114 1081        
18 A" 863 837        
19 A" 629 610        
20 A" 507 492        
21 A" 99 96        

Unscaled Zero Point Vibrational Energy (zpe) 16033.5 cm-1
Scaled (by 0.9698) Zero Point Vibrational Energy (zpe) 15549.3 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 MP4/3-21G
ABC
0.34627 0.29964 0.16567

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.141 0.000
C2 1.075 -0.940 0.000
N3 0.088 1.424 0.000
O4 -1.273 -0.454 0.000
H5 2.073 -0.485 0.000
H6 0.957 -1.572 0.890
H7 0.957 -1.572 -0.890
H8 1.058 1.779 0.000
H9 -1.925 0.303 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.52381.28661.40482.16542.15422.15421.95081.9315
C21.52382.56152.39751.09701.09811.09812.71913.2467
N31.28662.56152.31902.75433.24423.24421.03322.3036
O41.40482.39752.31903.34622.64852.64853.22810.9988
H52.16541.09702.75433.34621.79441.79442.48154.0747
H62.15421.09813.24422.64851.79441.77953.46923.5513
H72.15421.09813.24422.64851.79441.77953.46923.5513
H81.95082.71911.03323.22812.48153.46923.46923.3280
H91.93153.24672.30360.99884.07473.55133.55133.3280

picture of Ethaninidic acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.369 C1 C2 H6 109.428
C1 C2 H7 109.428 C1 N3 H8 114.028
C1 O4 H9 105.706 C2 C1 N3 131.229
C2 C1 O4 109.832 N3 C1 O4 118.939
H5 C2 H6 109.667 H5 C2 H7 109.667
H6 C2 H7 108.249
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability