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: B2PLYP/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP/6-31G**
 hartrees
Energy at 0K-208.991934
Energy at 298.15K-208.998295
HF Energy-208.785270
Nuclear repulsion energy121.506133
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 B2PLYP/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' 3786 3786 44.44      
2 A' 3562 3562 1.02      
3 A' 3201 3201 12.40      
4 A' 3099 3099 5.63      
5 A' 1762 1762 201.88      
6 A' 1522 1522 22.43      
7 A' 1473 1473 65.26      
8 A' 1416 1416 4.34      
9 A' 1278 1278 93.57      
10 A' 1124 1124 174.67      
11 A' 1032 1032 40.19      
12 A' 884 884 1.10      
13 A' 552 552 40.95      
14 A' 425 425 1.87      
15 A" 3175 3175 7.01      
16 A" 1510 1510 6.87      
17 A" 1087 1087 8.18      
18 A" 856 856 22.90      
19 A" 639 639 147.52      
20 A" 522 522 15.30      
21 A" 126 126 0.92      

Unscaled Zero Point Vibrational Energy (zpe) 16516.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16516.8 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 B2PLYP/6-31G**
ABC
0.36190 0.30921 0.17205

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.132 0.000
C2 0.941 -1.040 0.000
N3 0.252 1.381 0.000
O4 -1.292 -0.284 0.000
H5 1.978 -0.709 0.000
H6 0.759 -1.659 0.880
H7 0.759 -1.659 -0.880
H8 1.255 1.546 0.000
H9 -1.824 0.527 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.50301.27431.35722.14952.13502.13501.89071.8662
C21.50302.51742.35701.08831.09101.09102.60503.1779
N31.27432.51742.27082.71133.20543.20541.01692.2446
O41.35722.35702.27083.29712.62092.62093.13650.9702
H52.14951.08832.71133.29711.77791.77792.36863.9978
H62.13501.09103.20542.62091.77791.75943.36053.4962
H72.13501.09103.20542.62091.77791.75943.36053.4962
H81.89072.60501.01693.13652.36863.36053.36053.2435
H91.86623.17792.24460.97023.99783.49623.49623.2435

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 111.086 C1 C2 H6 109.763
C1 C2 H7 109.763 C1 N3 H8 110.721
C1 O4 H9 105.399 C2 C1 N3 129.850
C2 C1 O4 110.888 N3 C1 O4 119.262
H5 C2 H6 109.339 H5 C2 H7 109.339
H6 C2 H7 107.477
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.468      
2 C -0.368      
3 N -0.567      
4 O -0.508      
5 H 0.119      
6 H 0.146      
7 H 0.146      
8 H 0.232      
9 H 0.331      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.120 -0.952 0.000 1.470
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.216 -1.249 0.000
y -1.249 -26.968 0.000
z 0.000 0.000 -24.661
Traceless
 xyz
x 5.599 -1.249 0.000
y -1.249 -4.530 0.000
z 0.000 0.000 -1.069
Polar
3z2-r2-2.138
x2-y26.752
xy-1.249
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.051 0.266 0.000
y 0.266 5.594 0.000
z 0.000 0.000 2.921


<r2> (average value of r2) Å2
<r2> 74.847
(<r2>)1/2 8.651