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: B3LYP/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3LYP/6-31G**
 hartrees
Energy at 0K-189.303716
Energy at 298.15K 
HF Energy-189.303716
Nuclear repulsion energy117.326784
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 B3LYP/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 3600 3459 0.29      
2 A 3498 3361 0.71      
3 A 3150 3026 0.10      
4 A 1771 1701 0.29      
5 A 1650 1586 22.68      
6 A 1341 1289 0.73      
7 A 1288 1237 0.00      
8 A 1042 1001 0.57      
9 A 942 905 50.95      
10 A 819 787 152.23      
11 A 556 534 1.11      
12 A 335 322 0.03      
13 A 255 245 18.88      
14 B 3599 3458 1.34      
15 B 3497 3360 0.74      
16 B 3153 3029 55.06      
17 B 1658 1593 44.23      
18 B 1399 1345 9.65      
19 B 1184 1138 87.61      
20 B 1131 1087 1.09      
21 B 806 774 126.24      
22 B 749 720 325.42      
23 B 353 339 46.62      
24 B 258 248 96.07      

Unscaled Zero Point Vibrational Energy (zpe) 19016.2 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 18270.7 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 B3LYP/6-31G**
ABC
1.43748 0.13188 0.12266

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.312 0.593 0.036
C2 -0.312 -0.593 0.036
N3 -0.312 1.855 -0.111
N4 0.312 -1.855 -0.111
H5 1.401 0.639 0.039
H6 -1.401 -0.639 0.039
H7 -1.324 1.787 -0.061
H8 1.324 -1.787 -0.061
H9 0.002 2.524 0.585
H10 -0.002 -2.524 0.585

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34031.41572.45191.08972.11042.02822.58752.03163.1804
C21.34032.45191.41572.11041.08972.58752.02823.18042.0316
N31.41572.45193.76152.10652.72491.01543.99251.01624.4445
N42.45191.41573.76152.72492.10653.99251.01544.44451.0162
H51.08972.11042.10652.72493.07992.95912.42882.41043.5029
H62.11041.08972.72492.10653.07992.42882.95913.50292.4104
H72.02822.58751.01543.99252.95912.42884.44791.64954.5550
H82.58752.02823.99251.01542.42882.95914.44794.55501.6495
H92.03163.18041.01624.44452.41043.50291.64954.55505.0479
H103.18042.03164.44451.01623.50292.41044.55501.64955.0479

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.634 C1 C2 H6 120.209
C1 N3 H7 112.030 C1 N3 H9 112.270
C2 C1 N3 125.634 C2 C1 H5 120.209
C2 N4 H8 112.030 C2 N4 H10 112.270
N3 C1 H5 113.812 N4 C2 H6 113.812
H7 N3 H9 108.575 H8 N4 H10 108.575
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.043      
2 C 0.043      
3 N -0.606      
4 N -0.606      
5 H 0.073      
6 H 0.073      
7 H 0.243      
8 H 0.243      
9 H 0.247      
10 H 0.247      


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 2.300 2.300
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.537 -1.822 0.000
y -1.822 -22.601 0.000
z 0.000 0.000 -27.589
Traceless
 xyz
x 4.559 -1.822 0.000
y -1.822 1.462 0.000
z 0.000 0.000 -6.020
Polar
3z2-r2-12.040
x2-y22.065
xy-1.822
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.208 0.098 0.000
y 0.098 8.528 0.000
z 0.000 0.000 2.719


<r2> (average value of r2) Å2
<r2> 97.896
(<r2>)1/2 9.894