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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: CCSD/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 CCSD/6-311G*
 hartrees
Energy at 0K-188.772183
Energy at 298.15K 
HF Energy-188.123407
Nuclear repulsion energy117.170334
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 CCSD/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 3627 3459 0.24      
2 A 3535 3371 0.35      
3 A 3155 3008 0.01      
4 A 1791 1707 1.41      
5 A 1723 1643 33.58      
6 A 1357 1294 0.79      
7 A 1313 1252 0.00      
8 A 1066 1017 5.16      
9 A 933 889 117.26      
10 A 900 858 95.41      
11 A 557 531 0.68      
12 A 313 299 0.98      
13 A 244 233 18.78      
14 B 3627 3458 0.33      
15 B 3534 3369 0.50      
16 B 3156 3010 48.80      
17 B 1737 1656 59.67      
18 B 1426 1360 5.35      
19 B 1198 1143 59.54      
20 B 1164 1109 0.01      
21 B 864 824 434.20      
22 B 773 737 34.36      
23 B 336 320 25.87      
24 B 235 224 108.22      

Unscaled Zero Point Vibrational Energy (zpe) 19281.6 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 18385.0 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 CCSD/6-311G*
ABC
1.42505 0.13155 0.12236

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.315 0.592 0.033
C2 -0.315 -0.592 0.033
N3 -0.315 1.860 -0.110
N4 0.315 -1.860 -0.110
H5 1.405 0.638 0.029
H6 -1.405 -0.638 0.029
H7 -1.324 1.774 -0.067
H8 1.324 -1.774 -0.067
H9 -0.013 2.505 0.611
H10 0.013 -2.505 0.611

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34151.42262.45611.09142.11502.02292.57442.02473.1648
C21.34152.45611.42262.11501.09142.57442.02293.16482.0247
N31.42262.45613.77252.11452.72911.01313.98651.01304.4357
N42.45611.42263.77252.72912.11453.98651.01314.43571.0130
H51.09142.11502.11452.72913.08692.95752.41572.41553.4861
H62.11501.09142.72912.11453.08692.41572.95753.48612.4155
H72.02292.57441.01313.98652.95752.41574.42711.64624.5339
H82.57442.02293.98651.01312.41572.95754.42714.53391.6462
H92.02473.16481.01304.43572.41553.48611.64624.53395.0095
H103.16482.02474.43571.01303.48612.41554.53391.64625.0095

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.362 C1 C2 H6 120.418
C1 N3 H7 111.184 C1 N3 H9 111.347
C2 C1 N3 125.362 C2 C1 H5 120.418
C2 N4 H8 111.184 C2 N4 H10 111.347
N3 C1 H5 113.865 N4 C2 H6 113.865
H7 N3 H9 108.675 H8 N4 H10 108.675
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability