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: BLYP/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 BLYP/3-21G
 hartrees
Energy at 0K-207.955773
Energy at 298.15K-207.961908
HF Energy-207.955773
Nuclear repulsion energy119.206909
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 BLYP/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' 3276 3258 0.52      
2 A' 3234 3217 6.41      
3 A' 3076 3059 13.51      
4 A' 2991 2975 6.30      
5 A' 1654 1645 109.76      
6 A' 1506 1497 35.76      
7 A' 1410 1402 26.29      
8 A' 1381 1374 24.93      
9 A' 1200 1193 87.92      
10 A' 1054 1048 103.98      
11 A' 960 954 119.19      
12 A' 803 799 1.50      
13 A' 515 512 35.34      
14 A' 386 384 2.87      
15 A" 3042 3025 9.15      
16 A" 1504 1496 8.04      
17 A" 1074 1068 9.46      
18 A" 812 808 23.78      
19 A" 642 639 148.18      
20 A" 500 497 14.50      
21 A" 79 79 1.71      

Unscaled Zero Point Vibrational Energy (zpe) 15549.5 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 15464.0 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 BLYP/3-21G
ABC
0.34786 0.29905 0.16585

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.141 0.000
C2 1.074 -0.939 0.000
N3 0.083 1.424 0.000
O4 -1.269 -0.454 0.000
H5 2.078 -0.493 0.000
H6 0.954 -1.579 0.889
H7 0.954 -1.579 -0.889
H8 1.062 1.779 0.000
H9 -1.921 0.322 0.000

Atom - Atom Distances (Å)
  C1 C2 N3 O4 H5 H6 H7 H8 H9
C11.52371.28561.40182.17312.15902.15901.95181.9296
C21.52372.56312.39311.09871.10221.10222.71803.2501
N31.28562.56312.31422.76753.25133.25131.04172.2872
O41.40182.39312.31423.34772.64572.64573.22811.0135
H52.17311.09872.76753.34771.79841.79842.48884.0818
H62.15901.10223.25132.64571.79841.77863.47533.5598
H72.15901.10223.25132.64571.79841.77863.47533.5598
H81.95182.71801.04173.22812.48883.47533.47533.3202
H91.92963.25012.28721.01354.08183.55983.55983.3202

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 110.882 C1 C2 H6 109.566
C1 C2 H7 109.566 C1 N3 H8 113.582
C1 O4 H9 104.912 C2 C1 N3 131.476
C2 C1 O4 109.700 N3 C1 O4 118.824
H5 C2 H6 109.594 H5 C2 H7 109.594
H6 C2 H7 107.576
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.463      
2 C -0.565      
3 N -0.580      
4 O -0.504      
5 H 0.183      
6 H 0.215      
7 H 0.215      
8 H 0.235      
9 H 0.337      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.261 -0.467 0.000 1.344
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.019 -0.298 0.000
y -0.298 -26.608 0.000
z 0.000 0.000 -24.567
Traceless
 xyz
x 5.569 -0.298 0.000
y -0.298 -4.316 0.000
z 0.000 0.000 -1.254
Polar
3z2-r2-2.507
x2-y26.590
xy-0.298
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.083 0.214 0.000
y 0.214 5.433 0.000
z 0.000 0.000 2.421


<r2> (average value of r2) Å2
<r2> 76.982
(<r2>)1/2 8.774