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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: B3PW91/6-31G(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 B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-189.241181
Energy at 298.15K 
HF Energy-189.241181
Nuclear repulsion energy117.709357
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 B3PW91/6-31G(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 3625 3485 1.16      
2 A 3527 3391 1.92      
3 A 3151 3029 0.06      
4 A 1773 1705 0.18      
5 A 1640 1577 20.61      
6 A 1333 1282 0.66      
7 A 1292 1242 0.05      
8 A 1040 1000 0.62      
9 A 950 913 47.89      
10 A 818 786 132.30      
11 A 556 535 1.10      
12 A 339 326 0.59      
13 A 254 244 16.13      
14 B 3624 3484 3.98      
15 B 3525 3389 0.28      
16 B 3153 3032 48.21      
17 B 1647 1583 44.12      
18 B 1392 1338 9.81      
19 B 1197 1151 89.37      
20 B 1124 1081 0.77      
21 B 820 788 97.63      
22 B 749 720 323.92      
23 B 353 340 46.75      
24 B 256 246 82.52      

Unscaled Zero Point Vibrational Energy (zpe) 19069.9 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 18333.8 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 B3PW91/6-31G(2df,p)
ABC
1.44952 0.13276 0.12343

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.311 0.591 0.034
C2 -0.311 -0.591 0.034
N3 -0.311 1.848 -0.111
N4 0.311 -1.848 -0.111
H5 1.399 0.636 0.036
H6 -1.399 -0.636 0.036
H7 -1.319 1.784 -0.038
H8 1.319 -1.784 -0.038
H9 0.019 2.520 0.573
H10 -0.019 -2.520 0.573

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.33611.40962.44411.08952.10512.02052.58132.02323.1745
C21.33612.44411.40962.10511.08952.58132.02053.17452.0232
N31.40962.44413.74862.10102.71671.01283.98161.01314.4308
N42.44411.40963.74862.71672.10103.98161.01284.43081.0131
H51.08952.10512.10102.71673.07432.95122.42272.39563.5015
H62.10511.08952.71672.10103.07432.42272.95123.50152.3956
H72.02052.58131.01283.98162.95122.42274.43681.64474.5367
H82.58132.02053.98161.01282.42272.95124.43684.53671.6447
H92.02323.17451.01314.43082.39563.50151.64474.53675.0395
H103.17452.02324.43081.01313.50152.39564.53671.64475.0395

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.761 C1 C2 H6 120.082
C1 N3 H7 111.999 C1 N3 H9 112.213
C2 C1 N3 125.761 C2 C1 H5 120.082
C2 N4 H8 111.999 C2 N4 H10 112.213
N3 C1 H5 113.817 N4 C2 H6 113.817
H7 N3 H9 108.547 H8 N4 H10 108.547
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.055      
2 C -0.055      
3 N -0.562      
4 N -0.562      
5 H 0.105      
6 H 0.105      
7 H 0.255      
8 H 0.255      
9 H 0.257      
10 H 0.257      


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 2.106 2.106
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.359 -1.539 0.000
y -1.539 -22.151 0.000
z 0.000 0.000 -27.403
Traceless
 xyz
x 4.418 -1.539 0.000
y -1.539 1.730 0.000
z 0.000 0.000 -6.148
Polar
3z2-r2-12.296
x2-y21.792
xy-1.539
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.356 0.053 0.000
y 0.053 8.654 0.000
z 0.000 0.000 3.191


<r2> (average value of r2) Å2
<r2> 97.207
(<r2>)1/2 9.859