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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-189.233210
Energy at 298.15K 
HF Energy-189.233210
Nuclear repulsion energy117.565395
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**
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 3636 3485 0.75      
2 A 3530 3383 1.67      
3 A 3160 3029 0.11      
4 A 1781 1707 0.34      
5 A 1649 1580 24.27      
6 A 1338 1282 0.68      
7 A 1293 1239 0.01      
8 A 1045 1002 0.39      
9 A 941 902 56.39      
10 A 811 777 165.11      
11 A 557 534 1.56      
12 A 338 324 0.17      
13 A 254 243 20.17      
14 B 3635 3484 2.51      
15 B 3528 3382 0.06      
16 B 3163 3031 54.54      
17 B 1657 1588 50.86      
18 B 1397 1338 9.61      
19 B 1202 1152 96.22      
20 B 1127 1081 0.81      
21 B 805 771 105.25      
22 B 740 709 348.51      
23 B 352 337 48.50      
24 B 255 244 100.64      

Unscaled Zero Point Vibrational Energy (zpe) 19096.0 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 18301.6 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**
ABC
1.44223 0.13248 0.12319

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.312 0.593 0.037
C2 -0.312 -0.593 0.037
N3 -0.312 1.850 -0.111
N4 0.312 -1.850 -0.111
H5 1.401 0.638 0.038
H6 -1.401 -0.638 0.038
H7 -1.322 1.784 -0.064
H8 1.322 -1.784 -0.064
H9 0.005 2.522 0.580
H10 -0.005 -2.522 0.580

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34041.41012.44741.09012.10942.02382.58482.02703.1780
C21.34042.44741.41012.10941.09012.58482.02383.17802.0270
N31.41012.44743.75142.10282.72011.01373.98401.01444.4364
N42.44741.41013.75142.72012.10283.98401.01374.43641.0144
H51.09012.10942.10282.72013.07882.95572.42552.40623.5008
H62.10941.09012.72012.10283.07882.42552.95573.50082.4062
H72.02382.58481.01373.98402.95572.42554.44041.64914.5484
H82.58482.02383.98401.01372.42552.95574.44044.54841.6491
H92.02703.17801.01444.43642.40623.50081.64914.54845.0438
H103.17802.02704.43641.01443.50082.40624.54841.64915.0438

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.681 C1 C2 H6 120.077
C1 N3 H7 112.191 C1 N3 H9 112.421
C2 C1 N3 125.681 C2 C1 H5 120.077
C2 N4 H8 112.191 C2 N4 H10 112.421
N3 C1 H5 113.885 N4 C2 H6 113.885
H7 N3 H9 108.803 H8 N4 H10 108.803
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.011      
2 C 0.011      
3 N -0.643      
4 N -0.643      
5 H 0.104      
6 H 0.104      
7 H 0.263      
8 H 0.263      
9 H 0.266      
10 H 0.266      


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 2.317 2.317
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.238 -1.855 0.000
y -1.855 -22.220 0.000
z 0.000 0.000 -27.625
Traceless
 xyz
x 4.684 -1.855 0.000
y -1.855 1.712 0.000
z 0.000 0.000 -6.396
Polar
3z2-r2-12.792
x2-y21.982
xy-1.855
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.176 0.103 0.000
y 0.103 8.506 0.000
z 0.000 0.000 2.718


<r2> (average value of r2) Å2
<r2> 97.427
(<r2>)1/2 9.871