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: B97D3/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B97D3/6-31G(2df,p)
 hartrees
Energy at 0K-189.192665
Energy at 298.15K 
HF Energy-189.192665
Nuclear repulsion energy117.095520
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 B97D3/6-31G(2df,p)
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 3526 3526 0.29      
2 A 3426 3426 0.42      
3 A 3086 3086 0.07      
4 A 1716 1716 0.08      
5 A 1616 1616 18.82      
6 A 1310 1310 0.66      
7 A 1265 1265 0.18      
8 A 1022 1022 1.76      
9 A 916 916 48.80      
10 A 822 822 107.11      
11 A 547 547 0.58      
12 A 336 336 0.12      
13 A 248 248 15.95      
14 B 3525 3525 1.34      
15 B 3423 3423 2.33      
16 B 3088 3088 58.28      
17 B 1622 1622 32.77      
18 B 1370 1370 10.14      
19 B 1161 1161 68.92      
20 B 1111 1111 0.94      
21 B 780 780 274.23      
22 B 748 748 157.48      
23 B 357 357 46.36      
24 B 258 258 72.22      

Unscaled Zero Point Vibrational Energy (zpe) 18638.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18638.3 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 B97D3/6-31G(2df,p)
ABC
1.42690 0.13144 0.12226

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.313 0.595 0.042
C2 -0.313 -0.595 0.042
N3 -0.313 1.858 -0.119
N4 0.313 -1.858 -0.119
H5 1.405 0.643 0.045
H6 -1.405 -0.643 0.045
H7 -1.325 1.783 -0.039
H8 1.325 -1.783 -0.039
H9 0.008 2.529 0.576
H10 -0.008 -2.529 0.576

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34461.41862.45791.09292.11732.02472.58512.02973.1857
C21.34462.45791.41862.11731.09292.58512.02473.18572.0297
N31.41862.45793.76772.11062.73321.01763.99251.01824.4521
N42.45791.41863.76772.73322.11063.99251.01764.45211.0182
H51.09292.11732.11062.73323.08982.95932.42802.40703.5126
H62.11731.09292.73322.11063.08982.42802.95933.51262.4070
H72.02472.58511.01763.99252.95932.42804.44181.64634.5502
H82.58512.02473.99251.01762.42802.95934.44184.55021.6463
H92.02973.18571.01824.45212.40703.51261.64634.55025.0587
H103.18572.02974.45211.01823.51262.40704.55021.64635.0587

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.602 C1 C2 H6 120.257
C1 N3 H7 111.354 C1 N3 H9 111.753
C2 C1 N3 125.602 C2 C1 H5 120.257
C2 N4 H8 111.354 C2 N4 H10 111.753
N3 C1 H5 113.728 N4 C2 H6 113.728
H7 N3 H9 107.933 H8 N4 H10 107.933
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.039      
2 C -0.039      
3 N -0.514      
4 N -0.514      
5 H 0.079      
6 H 0.079      
7 H 0.236      
8 H 0.236      
9 H 0.238      
10 H 0.238      


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 2.052 2.052
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.616 -1.594 0.000
y -1.594 -22.244 0.000
z 0.000 0.000 -27.353
Traceless
 xyz
x 4.183 -1.594 0.000
y -1.594 1.741 0.000
z 0.000 0.000 -5.923
Polar
3z2-r2-11.847
x2-y21.628
xy-1.594
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.504 -0.024 0.000
y -0.024 9.008 0.000
z 0.000 0.000 3.250


<r2> (average value of r2) Å2
<r2> 98.048
(<r2>)1/2 9.902