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/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-189.134210
Energy at 298.15K 
HF Energy-188.917555
Nuclear repulsion energy117.046072
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/aug-cc-pVDZ
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 3614 3478 2.31      
2 A 3512 3380 0.05      
3 A 3174 3054 0.09      
4 A 1749 1683 0.33      
5 A 1631 1570 17.96      
6 A 1331 1280 0.55      
7 A 1278 1230 0.00      
8 A 1033 994 0.11      
9 A 928 893 70.48      
10 A 786 756 121.40      
11 A 550 529 1.78      
12 A 320 308 2.63      
13 A 244 235 15.81      
14 B 3614 3478 7.51      
15 B 3511 3379 3.18      
16 B 3178 3058 42.95      
17 B 1639 1578 48.26      
18 B 1386 1334 9.27      
19 B 1174 1129 119.76      
20 B 1122 1079 1.63      
21 B 806 775 80.51      
22 B 731 704 264.18      
23 B 340 327 32.13      
24 B 247 238 97.48      

Unscaled Zero Point Vibrational Energy (zpe) 18947.7 cm-1
Scaled (by 0.9623) Zero Point Vibrational Energy (zpe) 18233.4 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/aug-cc-pVDZ
ABC
1.42485 0.13143 0.12213

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/aug-cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.316 0.594 0.037
C2 -0.316 -0.594 0.037
N3 -0.316 1.857 -0.111
N4 0.316 -1.857 -0.111
H5 1.408 0.639 0.040
H6 -1.408 -0.639 0.040
H7 -1.328 1.793 -0.064
H8 1.328 -1.793 -0.064
H9 0.004 2.535 0.575
H10 -0.004 -2.535 0.575

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34591.41922.45571.09302.11912.03712.59542.03753.1912
C21.34592.45571.41922.11911.09302.59542.03713.19122.0375
N31.41922.45573.76702.11552.72851.01604.00341.01594.4559
N42.45571.41923.76702.72852.11554.00341.01604.45591.0159
H51.09302.11912.11552.72853.09192.97132.43562.41893.5147
H62.11911.09302.72852.11553.09192.43562.97133.51472.4189
H72.03712.59541.01604.00342.97132.43564.46311.65344.5709
H82.59542.03714.00341.01602.43562.97134.46314.57091.6534
H92.03753.19121.01594.45592.41893.51471.65344.57095.0698
H103.19122.03754.45591.01593.51472.41894.57091.65345.0698

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.255 C1 C2 H6 120.302
C1 N3 H7 112.496 C1 N3 H9 112.540
C2 C1 N3 125.255 C2 C1 H5 120.302
C2 N4 H8 112.496 C2 N4 H10 112.540
N3 C1 H5 114.092 N4 C2 H6 114.092
H7 N3 H9 108.929 H8 N4 H10 108.929
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability