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: B2PLYP=FULLultrafine/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B2PLYP=FULLultrafine/6-311G*
 hartrees
Energy at 0K-189.146722
Energy at 298.15K 
HF Energy-188.922024
Nuclear repulsion energy117.453849
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 B2PLYP=FULLultrafine/6-311G*
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 3626 3626 0.30      
2 A 3531 3531 0.49      
3 A 3160 3160 0.02      
4 A 1766 1766 1.17      
5 A 1708 1708 31.23      
6 A 1353 1353 0.74      
7 A 1304 1304 0.03      
8 A 1053 1053 1.89      
9 A 932 932 89.21      
10 A 854 854 143.35      
11 A 556 556 1.17      
12 A 328 328 0.74      
13 A 251 251 20.38      
14 B 3625 3625 0.64      
15 B 3529 3529 0.65      
16 B 3163 3163 57.81      
17 B 1721 1721 59.79      
18 B 1419 1419 6.35      
19 B 1187 1187 80.81      
20 B 1154 1154 0.53      
21 B 817 817 350.95      
22 B 769 769 131.63      
23 B 346 346 37.89      
24 B 247 247 108.38      

Unscaled Zero Point Vibrational Energy (zpe) 19198.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 19198.4 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 B2PLYP=FULLultrafine/6-311G*
ABC
1.44072 0.13203 0.12285

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-311G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.312 0.592 0.040
C2 -0.312 -0.592 0.040
N3 -0.312 1.854 -0.113
N4 0.312 -1.854 -0.113
H5 1.399 0.638 0.040
H6 -1.399 -0.638 0.040
H7 -1.321 1.784 -0.078
H8 1.321 -1.784 -0.078
H9 -0.004 2.520 0.584
H10 0.004 -2.520 0.584

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.33921.41572.45091.08772.10742.02502.58422.02743.1743
C21.33922.45091.41572.10741.08772.58422.02503.17432.0274
N31.41572.45093.75982.10452.72271.01173.98751.01184.4400
N42.45091.41573.75982.72272.10453.98751.01174.44001.0118
H51.08772.10742.10452.72273.07492.95362.42602.40953.4947
H62.10741.08772.72272.10453.07492.42602.95363.49472.4095
H72.02502.58421.01173.98752.95362.42604.43931.64744.5515
H82.58422.02503.98751.01172.42602.95364.43934.55151.6474
H92.02743.17431.01184.44002.40953.49471.64744.55155.0396
H103.17432.02744.44001.01183.49472.40954.55151.64745.0396

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.641 C1 C2 H6 120.191
C1 N3 H7 111.987 C1 N3 H9 112.197
C2 C1 N3 125.641 C2 C1 H5 120.191
C2 N4 H8 111.987 C2 N4 H10 112.197
N3 C1 H5 113.773 N4 C2 H6 113.773
H7 N3 H9 108.997 H8 N4 H10 108.997
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability