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 H2NCHCHNH2 (diaminoethylene)

using model chemistry: wB97X-D/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at wB97X-D/CEP-121G
 hartrees
Energy at 0K-34.650263
Energy at 298.15K 
HF Energy-34.650263
Nuclear repulsion energy66.088874
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 wB97X-D/CEP-121G
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 3735 3735 1.54      
2 A 3595 3595 0.14      
3 A 3146 3146 0.02      
4 A 1759 1759 2.24      
5 A 1687 1687 10.01      
6 A 1337 1337 0.51      
7 A 1278 1278 1.46      
8 A 1009 1009 0.19      
9 A 932 932 88.52      
10 A 565 565 27.21      
11 A 442 442 409.74      
12 A 324 324 32.93      
13 A 199 199 30.72      
14 B 3735 3735 3.48      
15 B 3594 3594 7.50      
16 B 3147 3147 84.36      
17 B 1695 1695 128.25      
18 B 1384 1384 6.96      
19 B 1212 1212 196.14      
20 B 1096 1096 4.86      
21 B 818 818 20.90      
22 B 403 403 242.55      
23 B 318 318 2.49      
24 B 125 125 195.47      

Unscaled Zero Point Vibrational Energy (zpe) 18767.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18767.4 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 wB97X-D/CEP-121G
ABC
1.44189 0.12941 0.12006

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-121G

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.321 0.598 0.050
C2 -0.321 -0.598 0.050
N3 -0.321 1.861 -0.080
N4 0.321 -1.861 -0.080
H5 1.411 0.641 0.061
H6 -1.411 -0.641 0.061
H7 -1.315 1.877 -0.250
H8 1.315 -1.877 -0.250
H9 0.048 2.638 0.448
H10 -0.048 -2.638 0.448

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.35661.42292.46251.09122.12922.09812.68372.09653.2809
C21.35662.46251.42292.12921.09122.68372.09813.28092.0965
N31.42292.46253.77742.12282.73351.00934.08381.00894.5384
N42.46251.42293.77742.73352.12284.08381.00934.53841.0089
H51.09122.12922.12282.73353.09973.00922.53892.44853.6100
H62.12921.09122.73352.12283.09972.53893.00923.61002.4485
H72.09812.68371.00934.08383.00922.53894.58351.71034.7409
H82.68372.09814.08381.00932.53893.00924.58354.74091.7103
H92.09653.28091.00894.53842.44853.61001.71034.74095.2769
H103.28092.09654.53841.00893.61002.44854.74091.71035.2769

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 124.722 C1 C2 H6 120.491
C1 N3 H7 118.233 C1 N3 H9 118.115
C2 C1 N3 124.722 C2 C1 H5 120.491
C2 N4 H8 118.233 C2 N4 H10 118.115
N3 C1 H5 114.564 N4 C2 H6 114.564
H7 N3 H9 115.864 H8 N4 H10 115.864
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.086      
2 C -0.086      
3 N -0.619      
4 N -0.619      
5 H 0.128      
6 H 0.128      
7 H 0.289      
8 H 0.289      
9 H 0.289      
10 H 0.289      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.529 1.529
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.223 -1.975 0.000
y -1.975 -19.632 0.000
z 0.000 0.000 -29.157
Traceless
 xyz
x 4.172 -1.975 0.000
y -1.975 5.058 0.000
z 0.000 0.000 -9.230
Polar
3z2-r2-18.460
x2-y2-0.591
xy-1.975
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.282 0.361 0.000
y 0.361 8.693 0.000
z 0.000 0.000 3.432


<r2> (average value of r2) Å2
<r2> 83.570
(<r2>)1/2 9.142