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/6-31+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 B2PLYP=FULLultrafine/6-31+G**
 hartrees
Energy at 0K-189.117048
Energy at 298.15K 
HF Energy-188.904919
Nuclear repulsion energy117.325069
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/6-31+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 3660 3660 2.65      
2 A 3554 3554 0.86      
3 A 3195 3195 0.07      
4 A 1761 1761 0.41      
5 A 1667 1667 26.82      
6 A 1348 1348 0.63      
7 A 1288 1288 0.03      
8 A 1040 1040 0.18      
9 A 930 930 81.97      
10 A 796 796 171.82      
11 A 554 554 2.45      
12 A 319 319 2.95      
13 A 244 244 20.28      
14 B 3660 3660 9.41      
15 B 3552 3552 4.57      
16 B 3198 3198 48.23      
17 B 1676 1676 67.17      
18 B 1403 1403 7.41      
19 B 1182 1182 126.59      
20 B 1131 1131 1.87      
21 B 797 797 118.45      
22 B 736 736 279.89      
23 B 338 338 31.70      
24 B 245 245 113.09      

Unscaled Zero Point Vibrational Energy (zpe) 19136.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 19136.6 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/6-31+G**
ABC
1.43535 0.13193 0.12263

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31+G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.315 0.593 0.041
C2 -0.315 -0.593 0.041
N3 -0.315 1.852 -0.109
N4 0.315 -1.852 -0.109
H5 1.400 0.640 0.041
H6 -1.400 -0.640 0.041
H7 -1.326 1.794 -0.086
H8 1.326 -1.794 -0.086
H9 0.000 2.537 0.567
H10 -0.000 -2.537 0.567

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34231.41652.44961.08622.11192.03782.59542.03873.1891
C21.34232.44961.41652.11191.08622.59542.03783.18912.0387
N31.41652.44963.75802.10602.72221.01273.99901.01264.4523
N42.44961.41653.75802.72222.10603.99901.01274.45231.0126
H51.08622.11192.10602.72223.07862.96322.43852.41583.5112
H62.11191.08622.72222.10603.07862.43852.96323.51122.4158
H72.03782.59541.01273.99902.96322.43854.46221.65434.5765
H82.59542.03783.99901.01272.43852.96324.46224.57651.6543
H92.03873.18911.01264.45232.41583.51121.65434.57655.0738
H103.18912.03874.45231.01263.51122.41584.57651.65435.0738

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.210 C1 C2 H6 120.470
C1 N3 H7 112.991 C1 N3 H9 113.071
C2 C1 N3 125.210 C2 C1 H5 120.470
C2 N4 H8 112.991 C2 N4 H10 113.071
N3 C1 H5 113.946 N4 C2 H6 113.946
H7 N3 H9 109.529 H8 N4 H10 109.529
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability