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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: HF/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at HF/6-31+G**
 hartrees
Energy at 0K-188.109694
Energy at 298.15K 
HF Energy-188.109694
Nuclear repulsion energy118.304697
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 HF/6-31+G**
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 3864 3494 3.90 82.02 0.75 0.86
2 A 3763 3403 3.12 196.13 0.04 0.08
3 A 3322 3004 0.01 150.59 0.36 0.53
4 A 1916 1732 0.47 90.34 0.11 0.20
5 A 1789 1618 29.31 9.83 0.52 0.68
6 A 1453 1314 0.71 29.03 0.27 0.42
7 A 1374 1242 0.00 15.42 0.63 0.77
8 A 1110 1004 1.27 12.22 0.17 0.29
9 A 1048 948 88.08 0.82 0.31 0.48
10 A 857 775 179.75 1.09 0.66 0.79
11 A 591 534 2.58 7.80 0.21 0.35
12 A 326 295 5.86 1.34 0.35 0.52
13 A 251 227 17.83 0.25 0.71 0.83
14 B 3864 3494 15.26 29.19 0.75 0.86
15 B 3762 3402 9.07 45.15 0.75 0.86
16 B 3324 3005 54.47 0.02 0.75 0.86
17 B 1800 1628 81.76 2.07 0.75 0.86
18 B 1509 1365 6.27 0.40 0.75 0.86
19 B 1236 1118 141.94 0.15 0.75 0.86
20 B 1215 1099 1.33 0.96 0.75 0.86
21 B 935 846 79.76 20.90 0.75 0.86
22 B 794 718 322.41 0.16 0.75 0.86
23 B 349 316 17.09 0.13 0.75 0.86
24 B 229 207 144.62 0.12 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 20340.9 cm-1
Scaled (by 0.9042) Zero Point Vibrational Energy (zpe) 18392.2 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 HF/6-31+G**
ABC
1.47515 0.13359 0.12427

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.311 0.583 0.020
C2 -0.311 -0.583 0.020
N3 -0.311 1.845 -0.093
N4 0.311 -1.845 -0.093
H5 1.388 0.627 0.021
H6 -1.388 -0.627 0.021
H7 -1.308 1.797 -0.094
H8 1.308 -1.797 -0.094
H9 -0.006 2.492 0.603
H10 0.006 -2.492 0.603

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.32221.41082.43071.07822.08602.02662.58322.02103.1454
C21.32222.43071.41082.08601.07822.58322.02663.14542.0210
N31.41082.43073.74142.09382.69830.99843.98520.99884.4040
N42.43071.41083.74142.69832.09383.98520.99844.40400.9988
H51.07822.08602.09382.69833.04632.94172.42752.40073.4611
H62.08601.07822.69832.09383.04632.42752.94173.46112.4007
H72.02662.58320.99843.98522.94172.42754.44521.63314.5399
H82.58322.02663.98520.99842.42752.94174.44524.53991.6331
H92.02103.14540.99884.40402.40073.46111.63314.53994.9850
H103.14542.02104.40400.99883.46112.40074.53991.63314.9850

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.562 C1 C2 H6 120.356
C1 N3 H7 113.426 C1 N3 H9 112.897
C2 C1 N3 125.562 C2 C1 H5 120.356
C2 N4 H8 113.426 C2 N4 H10 112.897
N3 C1 H5 113.869 N4 C2 H6 113.869
H7 N3 H9 109.710 H8 N4 H10 109.710
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.063      
2 C -0.063      
3 N -0.651      
4 N -0.651      
5 H 0.135      
6 H 0.135      
7 H 0.288      
8 H 0.288      
9 H 0.292      
10 H 0.292      


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 2.358 2.358
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.583 -1.704 0.000
y -1.704 -24.576 0.000
z 0.000 0.000 -28.867
Traceless
 xyz
x 6.138 -1.704 0.000
y -1.704 0.149 0.000
z 0.000 0.000 -6.287
Polar
3z2-r2-12.575
x2-y23.993
xy-1.704
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.266 0.528 0.000
y 0.528 8.336 0.000
z 0.000 0.000 4.247


<r2> (average value of r2) Å2
<r2> 97.466
(<r2>)1/2 9.872