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: B3LYP/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 B3LYP/3-21G
 hartrees
Energy at 0K-208.029003
Energy at 298.15K-208.035275
HF Energy-208.029003
Nuclear repulsion energy120.393418
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 B3LYP/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' 3467 3346 9.33      
2 A' 3381 3262 2.01      
3 A' 3157 3046 11.53      
4 A' 3069 2961 4.15      
5 A' 1736 1675 138.72      
6 A' 1542 1488 34.00      
7 A' 1455 1404 42.66      
8 A' 1427 1377 18.51      
9 A' 1240 1196 100.53      
10 A' 1084 1046 127.18      
11 A' 1004 969 121.60      
12 A' 841 812 1.17      
13 A' 536 517 40.15      
14 A' 401 386 2.89      
15 A" 3125 3015 6.21      
16 A" 1539 1485 8.95      
17 A" 1112 1073 13.82      
18 A" 851 821 32.55      
19 A" 652 629 159.21      
20 A" 520 502 22.57      
21 A" 99 96 1.76      

Unscaled Zero Point Vibrational Energy (zpe) 16117.7 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 15552.0 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 B3LYP/3-21G
ABC
0.35395 0.30551 0.16915

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.140 0.000
C2 1.044 -0.952 0.000
N3 0.118 1.406 0.000
O4 -1.267 -0.420 0.000
H5 2.051 -0.531 0.000
H6 0.910 -1.585 0.883
H7 0.910 -1.585 -0.883
H8 1.090 1.745 0.000
H9 -1.912 0.342 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.51021.27141.38502.15832.14032.14031.94051.9223
C21.51022.53272.37161.09161.09481.09482.69723.2264
N31.27142.53272.29102.73703.21703.21701.02972.2909
O41.38502.37162.29103.32042.62222.62223.20020.9980
H52.15831.09162.73703.32041.78681.78682.47134.0581
H62.14031.09483.21702.62221.78681.76623.44973.5290
H72.14031.09483.21702.62221.78681.76623.44973.5290
H81.94052.69721.02973.20022.47133.44973.44973.3130
H91.92233.22642.29090.99804.05813.52903.52903.3130

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 111.085 C1 C2 H6 109.455
C1 C2 H7 109.455 C1 N3 H8 114.568
C1 O4 H9 106.410 C2 C1 N3 130.958
C2 C1 O4 109.919 N3 C1 O4 119.123
H5 C2 H6 109.622 H5 C2 H7 109.622
H6 C2 H7 107.530
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.513      
2 C -0.602      
3 N -0.622      
4 O -0.557      
5 H 0.196      
6 H 0.230      
7 H 0.230      
8 H 0.252      
9 H 0.359      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.343 -0.495 0.000 1.431
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.874 -0.474 0.000
y -0.474 -26.678 0.000
z 0.000 0.000 -24.494
Traceless
 xyz
x 5.712 -0.474 0.000
y -0.474 -4.494 0.000
z 0.000 0.000 -1.218
Polar
3z2-r2-2.436
x2-y26.804
xy-0.474
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.781 0.250 0.000
y 0.250 5.235 0.000
z 0.000 0.000 2.371


<r2> (average value of r2) Å2
<r2> 75.794
(<r2>)1/2 8.706