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: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-207.953196
Energy at 298.15K-207.959470
HF Energy-207.953196
Nuclear repulsion energy120.601421
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 B3PW91/3-21G*
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' 3513 3370 14.59      
2 A' 3419 3280 1.58      
3 A' 3171 3042 9.74      
4 A' 3074 2949 3.33      
5 A' 1747 1676 141.78      
6 A' 1534 1472 36.10      
7 A' 1453 1394 62.31      
8 A' 1429 1371 5.24      
9 A' 1238 1188 107.81      
10 A' 1081 1037 146.50      
11 A' 1010 969 104.85      
12 A' 851 817 1.29      
13 A' 537 515 42.78      
14 A' 402 385 3.16      
15 A" 3139 3012 4.41      
16 A" 1531 1469 10.56      
17 A" 1108 1063 16.92      
18 A" 851 817 33.27      
19 A" 657 631 167.84      
20 A" 525 504 24.35      
21 A" 100 96 1.86      

Unscaled Zero Point Vibrational Energy (zpe) 16184.4 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 15527.3 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 B3PW91/3-21G*
ABC
0.35534 0.30664 0.16982

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.138 0.000
C2 1.038 -0.953 0.000
N3 0.122 1.403 0.000
O4 -1.265 -0.414 0.000
H5 2.048 -0.536 0.000
H6 0.902 -1.586 0.884
H7 0.902 -1.586 -0.884
H8 1.094 1.740 0.000
H9 -1.905 0.349 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.50591.27141.38052.15612.13672.13671.94001.9163
C21.50592.52822.36591.09231.09561.09562.69383.2181
N31.27142.52822.28652.73363.21333.21331.02832.2844
O41.38052.36592.28653.31572.61732.61733.19470.9955
H52.15611.09232.73363.31571.78811.78812.46864.0506
H62.13671.09563.21332.61731.78811.76723.44713.5214
H72.13671.09563.21332.61731.78811.76723.44713.5214
H81.94002.69381.02833.19472.46863.44713.44713.3052
H91.91633.21812.28440.99554.05063.52143.52143.3052

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 111.169 C1 C2 H6 109.421
C1 C2 H7 109.421 C1 N3 H8 114.629
C1 O4 H9 106.384 C2 C1 N3 130.907
C2 C1 O4 110.025 N3 C1 O4 119.067
H5 C2 H6 109.623 H5 C2 H7 109.623
H6 C2 H7 107.508
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.514      
2 C -0.668      
3 N -0.645      
4 O -0.569      
5 H 0.218      
6 H 0.253      
7 H 0.253      
8 H 0.270      
9 H 0.374      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.363 -0.519 0.000 1.459
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.658 -0.493 0.000
y -0.493 -26.595 0.000
z 0.000 0.000 -24.494
Traceless
 xyz
x 5.887 -0.493 0.000
y -0.493 -4.519 0.000
z 0.000 0.000 -1.368
Polar
3z2-r2-2.735
x2-y26.938
xy-0.493
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.730 0.245 0.000
y 0.245 5.229 0.000
z 0.000 0.000 2.381


<r2> (average value of r2) Å2
<r2> 75.507
(<r2>)1/2 8.689