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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: TPSSh/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at TPSSh/6-31G**
 hartrees
Energy at 0K-189.306430
Energy at 298.15K 
HF Energy-189.306430
Nuclear repulsion energy117.226685
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 TPSSh/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3583 3435 0.12      
2 A 3479 3336 0.64      
3 A 3154 3024 0.12      
4 A 1762 1689 0.16      
5 A 1656 1587 24.49      
6 A 1342 1286 0.67      
7 A 1289 1236 0.02      
8 A 1040 997 0.82      
9 A 943 904 59.17      
10 A 833 799 141.73      
11 A 549 527 1.08      
12 A 339 325 0.00      
13 A 255 244 19.24      
14 B 3582 3434 1.03      
15 B 3477 3334 2.77      
16 B 3156 3026 60.10      
17 B 1665 1596 39.70      
18 B 1400 1342 10.30      
19 B 1185 1136 79.53      
20 B 1126 1080 1.37      
21 B 792 760 228.23      
22 B 758 727 245.95      
23 B 354 340 58.49      
24 B 254 244 83.53      

Unscaled Zero Point Vibrational Energy (zpe) 18986.8 cm-1
Scaled (by 0.9587) Zero Point Vibrational Energy (zpe) 18202.7 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 TPSSh/6-31G**
ABC
1.42882 0.13177 0.12256

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.313 0.594 0.041
C2 -0.313 -0.594 0.041
N3 -0.313 1.855 -0.116
N4 0.313 -1.855 -0.116
H5 1.402 0.643 0.042
H6 -1.402 -0.643 0.042
H7 -1.326 1.781 -0.059
H8 1.326 -1.781 -0.059
H9 -0.002 2.525 0.583
H10 0.002 -2.525 0.583

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34351.41712.45431.08922.11462.02612.58362.03023.1812
C21.34352.45431.41712.11461.08922.58362.02613.18122.0302
N31.41712.45433.76292.10622.72931.01673.98881.01774.4469
N42.45431.41713.76292.72932.10623.98881.01674.44691.0177
H51.08922.11462.10622.72933.08392.95702.42692.40933.5053
H62.11461.08922.72932.10623.08392.42692.95703.50532.4093
H72.02612.58361.01673.98882.95702.42694.44021.64904.5513
H82.58362.02613.98881.01672.42692.95704.44024.55131.6490
H92.03023.18121.01774.44692.40933.50531.64904.55135.0500
H103.18122.03024.44691.01773.50532.40934.55131.64905.0500

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.495 C1 C2 H6 120.378
C1 N3 H7 111.658 C1 N3 H9 111.945
C2 C1 N3 125.495 C2 C1 H5 120.378
C2 N4 H8 111.658 C2 N4 H10 111.945
N3 C1 H5 113.720 N4 C2 H6 113.720
H7 N3 H9 108.300 H8 N4 H10 108.300
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.012      
2 C 0.012      
3 N -0.633      
4 N -0.633      
5 H 0.102      
6 H 0.102      
7 H 0.258      
8 H 0.258      
9 H 0.260      
10 H 0.260      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 2.321 2.321
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.249 0.070 0.000
y 0.070 8.667 0.000
z 0.000 0.000 2.757


<r2> (average value of r2) Å2
<r2> 97.913
(<r2>)1/2 9.895