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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G*
 hartrees
Energy at 0K-189.062111
Energy at 298.15K 
HF Energy-189.062111
Nuclear repulsion energy117.669560
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 PBE1PBE/6-31G*
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 3632 3451 0.76      
2 A 3529 3354 2.16      
3 A 3180 3022 0.14      
4 A 1802 1713 0.16      
5 A 1683 1600 28.41      
6 A 1351 1284 0.68      
7 A 1310 1245 0.02      
8 A 1060 1008 0.91      
9 A 949 902 60.37      
10 A 844 802 162.72      
11 A 560 533 1.53      
12 A 340 323 0.02      
13 A 258 245 21.15      
14 B 3631 3450 2.41      
15 B 3527 3352 0.05      
16 B 3182 3024 52.88      
17 B 1692 1608 52.48      
18 B 1412 1342 9.71      
19 B 1218 1157 90.01      
20 B 1143 1086 0.70      
21 B 818 778 203.14      
22 B 765 727 270.87      
23 B 354 336 54.66      
24 B 257 244 100.81      

Unscaled Zero Point Vibrational Energy (zpe) 19248.6 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 18291.9 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 PBE1PBE/6-31G*
ABC
1.44107 0.13283 0.12353

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.311 0.592 0.037
C2 -0.311 -0.592 0.037
N3 -0.311 1.848 -0.112
N4 0.311 -1.848 -0.112
H5 1.401 0.639 0.038
H6 -1.401 -0.639 0.038
H7 -1.322 1.777 -0.067
H8 1.322 -1.777 -0.067
H9 -0.003 2.515 0.588
H10 0.003 -2.515 0.588

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.33851.40882.44461.09042.10852.02012.57792.02433.1709
C21.33852.44461.40882.10851.09042.57792.02013.17092.0243
N31.40882.44463.74712.10082.71861.01463.97541.01514.4294
N42.44461.40883.74712.71862.10083.97541.01464.42941.0151
H51.09042.10852.10082.71863.07872.95282.41882.40683.4932
H62.10851.09042.71862.10083.07872.41882.95283.49322.4068
H72.02012.57791.01463.97542.95282.41884.42921.64784.5389
H82.57792.02013.97541.01462.41882.95284.42924.53891.6478
H92.02433.17091.01514.42942.40683.49321.64784.53895.0298
H103.17092.02434.42941.01513.49322.40684.53891.64785.0298

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.687 C1 C2 H6 120.139
C1 N3 H7 111.911 C1 N3 H9 112.246
C2 C1 N3 125.687 C2 C1 H5 120.139
C2 N4 H8 111.911 C2 N4 H10 112.246
N3 C1 H5 113.802 N4 C2 H6 113.802
H7 N3 H9 108.546 H8 N4 H10 108.546
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.037      
2 C -0.037      
3 N -0.768      
4 N -0.768      
5 H 0.150      
6 H 0.150      
7 H 0.327      
8 H 0.327      
9 H 0.328      
10 H 0.328      


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 2.419 2.419
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.218 -1.878 0.000
y -1.878 -22.587 0.000
z 0.000 0.000 -27.760
Traceless
 xyz
x 4.956 -1.878 0.000
y -1.878 1.402 0.000
z 0.000 0.000 -6.358
Polar
3z2-r2-12.716
x2-y22.370
xy-1.878
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.075 0.115 0.000
y 0.115 8.371 0.000
z 0.000 0.000 2.658


<r2> (average value of r2) Å2
<r2> 97.302
(<r2>)1/2 9.864