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: CISD/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 CISD/3-21G
 hartrees
Energy at 0K-207.169540
Energy at 298.15K-207.175921
HF Energy-206.785238
Nuclear repulsion energy120.477156
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 CISD/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' 3641 3427 19.54      
2 A' 3488 3283 0.84      
3 A' 3211 3022 12.22      
4 A' 3130 2947 4.02      
5 A' 1800 1695 138.19      
6 A' 1595 1502 31.18      
7 A' 1510 1422 40.98      
8 A' 1483 1396 23.75      
9 A' 1296 1220 104.53      
10 A' 1127 1061 129.72      
11 A' 1044 982 136.19      
12 A' 857 806 0.63      
13 A' 554 522 43.50      
14 A' 415 391 3.36      
15 A" 3195 3007 5.92      
16 A" 1588 1495 7.21      
17 A" 1155 1087 14.29      
18 A" 909 856 42.65      
19 A" 641 603 168.06      
20 A" 529 498 32.19      
21 A" 117 111 1.33      

Unscaled Zero Point Vibrational Energy (zpe) 16641.8 cm-1
Scaled (by 0.9413) Zero Point Vibrational Energy (zpe) 15664.9 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 CISD/3-21G
ABC
0.35295 0.30611 0.16911

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.142 0.000
C2 1.041 -0.956 0.000
N3 0.129 1.402 0.000
O4 -1.273 -0.412 0.000
H5 2.046 -0.535 0.000
H6 0.904 -1.583 0.883
H7 0.904 -1.583 -0.883
H8 1.094 1.740 0.000
H9 -1.917 0.334 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51311.26701.38792.15502.13812.13811.93661.9266
C21.51312.52882.37671.08981.09151.09152.69663.2271
N31.26702.52882.29272.72543.20793.20791.02242.3082
O41.38792.37672.29273.32092.62462.62463.19880.9858
H52.15501.08982.72543.32091.78381.78382.46584.0571
H62.13811.09153.20792.62461.78381.76703.44303.5231
H72.13811.09153.20792.62461.78381.76703.44303.5231
H81.93662.69661.02243.19882.46583.44303.44303.3232
H91.92663.22712.30820.98584.05713.52313.52313.3232

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 110.720 C1 C2 H6 109.278
C1 C2 H7 109.278 C1 N3 H8 115.120
C1 O4 H9 107.294 C2 C1 N3 130.687
C2 C1 O4 109.941 N3 C1 O4 119.372
H5 C2 H6 109.719 H5 C2 H7 109.719
H6 C2 H7 108.079
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability