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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: TPSSh/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 TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-189.315458
Energy at 298.15K 
HF Energy-189.315458
Nuclear repulsion energy117.352408
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 TPSSh/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 3569 3444 0.36      
2 A 3474 3352 0.91      
3 A 3143 3033 0.06      
4 A 1753 1692 0.08      
5 A 1647 1589 20.96      
6 A 1336 1290 0.60      
7 A 1287 1242 0.20      
8 A 1035 999 1.07      
9 A 952 919 50.74      
10 A 839 810 112.43      
11 A 548 529 0.81      
12 A 340 328 0.18      
13 A 256 247 15.67      
14 B 3568 3443 1.23      
15 B 3472 3350 0.87      
16 B 3145 3035 52.62      
17 B 1654 1596 34.49      
18 B 1395 1346 10.44      
19 B 1179 1138 73.19      
20 B 1122 1083 1.31      
21 B 807 779 194.34      
22 B 767 741 244.35      
23 B 356 344 54.55      
24 B 255 246 68.52      

Unscaled Zero Point Vibrational Energy (zpe) 18948.6 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 18285.4 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 TPSSh/6-31G(2df,p)
ABC
1.43571 0.13199 0.12276

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.313 0.592 0.039
C2 -0.313 -0.592 0.039
N3 -0.313 1.854 -0.116
N4 0.313 -1.854 -0.116
H5 1.400 0.641 0.040
H6 -1.400 -0.641 0.040
H7 -1.323 1.782 -0.035
H8 1.323 -1.782 -0.035
H9 0.012 2.522 0.577
H10 -0.012 -2.522 0.577

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.33901.41702.45131.08882.11052.02332.58072.02663.1774
C21.33902.45131.41702.11051.08882.58072.02333.17742.0266
N31.41702.45133.76082.10472.72671.01593.98751.01644.4416
N42.45131.41703.76082.72672.10473.98751.01594.44161.0164
H51.08882.11052.10472.72673.08002.95292.42522.39913.5059
H62.11051.08882.72672.10473.08002.42522.95293.50592.3991
H72.02332.58071.01593.98752.95292.42524.43771.64434.5407
H82.58072.02333.98751.01592.42522.95294.43774.54071.6443
H92.02663.17741.01644.44162.39913.50591.64434.54075.0450
H103.17742.02664.44161.01643.50592.39914.54071.64435.0450

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.577 C1 C2 H6 120.412
C1 N3 H7 111.475 C1 N3 H9 111.723
C2 C1 N3 125.577 C2 C1 H5 120.412
C2 N4 H8 111.475 C2 N4 H10 111.723
N3 C1 H5 113.620 N4 C2 H6 113.620
H7 N3 H9 108.018 H8 N4 H10 108.018
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.051      
2 C -0.051      
3 N -0.560      
4 N -0.560      
5 H 0.105      
6 H 0.105      
7 H 0.253      
8 H 0.253      
9 H 0.254      
10 H 0.254      


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 2.112 2.112
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.421 0.022 0.000
y 0.022 8.813 0.000
z 0.000 0.000 3.230


<r2> (average value of r2) Å2
<r2> 97.715
(<r2>)1/2 9.885