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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: CCSD=FULL/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 CCSD=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-188.891201
Energy at 298.15K 
HF Energy-188.112793
Nuclear repulsion energy117.792085
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=FULL/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 3671 3457 1.67      
2 A 3577 3368 2.38      
3 A 3213 3026 0.04      
4 A 1809 1703 0.00      
5 A 1685 1587 24.04      
6 A 1365 1285 0.74      
7 A 1317 1241 0.30      
8 A 1061 999 1.95      
9 A 978 921 51.88      
10 A 867 816 115.46      
11 A 561 529 0.69      
12 A 324 305 0.33      
13 A 256 241 15.12      
14 B 3671 3456 4.73      
15 B 3575 3367 1.70      
16 B 3214 3026 36.53      
17 B 1693 1594 44.48      
18 B 1426 1342 7.88      
19 B 1209 1139 66.28      
20 B 1153 1086 0.45      
21 B 860 810 195.76      
22 B 791 745 203.21      
23 B 344 324 37.45      
24 B 256 241 87.84      

Unscaled Zero Point Vibrational Energy (zpe) 19438.3 cm-1
Scaled (by 0.9416) Zero Point Vibrational Energy (zpe) 18303.1 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=FULL/6-31G(2df,p)
ABC
1.44570 0.13293 0.12365

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.313 0.588 0.024
C2 -0.313 -0.588 0.024
N3 -0.313 1.851 -0.106
N4 0.313 -1.851 -0.106
H5 1.396 0.631 0.025
H6 -1.396 -0.631 0.025
H7 -1.318 1.771 -0.040
H8 1.318 -1.771 -0.040
H9 -0.004 2.490 0.613
H10 0.004 -2.490 0.613

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.33141.41512.44191.08472.09912.01552.56492.01613.1485
C21.33142.44191.41512.09911.08472.56492.01553.14852.0161
N31.41512.44193.75362.10342.71141.01063.97221.01054.4110
N42.44191.41513.75362.71142.10343.97221.01064.41101.0105
H51.08472.09912.10342.71143.06482.94452.40442.40033.4677
H62.09911.08472.71142.10343.06482.40442.94453.46772.4003
H72.01552.56491.01063.97222.94452.40444.41501.63354.5087
H82.56492.01553.97221.01062.40442.94454.41504.50871.6335
H92.01613.14851.01054.41102.40033.46771.63354.50874.9797
H103.14852.01614.41101.01053.46772.40034.50871.63354.9797

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.491 C1 C2 H6 120.298
C1 N3 H7 111.283 C1 N3 H9 111.342
C2 C1 N3 125.491 C2 C1 H5 120.298
C2 N4 H8 111.283 C2 N4 H10 111.342
N3 C1 H5 113.930 N4 C2 H6 113.930
H7 N3 H9 107.842 H8 N4 H10 107.842
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability