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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: B2PLYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B2PLYP/3-21G*
 hartrees
Energy at 0K-187.962568
Energy at 298.15K 
HF Energy-187.830332
Nuclear repulsion energy116.771931
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 B2PLYP/3-21G*
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 3581 3581 0.83      
2 A 3472 3472 0.79      
3 A 3175 3175 0.11      
4 A 1740 1740 2.43      
5 A 1722 1722 14.80      
6 A 1372 1372 1.67      
7 A 1293 1293 0.08      
8 A 1030 1030 0.62      
9 A 959 959 79.52      
10 A 648 648 298.26      
11 A 560 560 2.96      
12 A 345 345 0.61      
13 A 253 253 25.25      
14 B 3581 3581 1.29      
15 B 3470 3470 1.57      
16 B 3180 3180 48.59      
17 B 1730 1730 53.21      
18 B 1423 1423 2.36      
19 B 1170 1170 58.40      
20 B 1150 1150 25.17      
21 B 805 805 20.07      
22 B 575 575 422.73      
23 B 342 342 33.66      
24 B 212 212 202.42      

Unscaled Zero Point Vibrational Energy (zpe) 18894.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 18894.6 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 B2PLYP/3-21G*
ABC
1.44322 0.13036 0.12118

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/3-21G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.315 0.593 0.040
C2 -0.315 -0.593 0.040
N3 -0.315 1.861 -0.096
N4 0.315 -1.861 -0.096
H5 1.401 0.633 0.049
H6 -1.401 -0.633 0.049
H7 -1.330 1.832 -0.165
H8 1.330 -1.832 -0.165
H9 0.013 2.580 0.545
H10 -0.013 -2.580 0.545

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34321.42242.45791.08632.10902.06952.63682.07223.2297
C21.34322.45791.42242.10901.08632.63682.06953.22972.0722
N31.42242.45793.77512.11452.72431.01764.04341.01754.4973
N42.45791.42243.77512.72432.11454.04341.01764.49731.0175
H51.08632.10902.11452.72433.07432.98952.47572.44153.5456
H62.10901.08632.72432.11453.07432.47572.98953.54562.4415
H72.06952.63681.01764.04342.98952.47574.52761.69324.6588
H82.63682.06954.04341.01762.47572.98954.52764.65881.6932
H92.07223.22971.01754.49732.44153.54561.69324.65885.1601
H103.22972.07224.49731.01753.54562.44154.65881.69325.1601

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.408 C1 C2 H6 120.107
C1 N3 H7 115.012 C1 N3 H9 115.266
C2 C1 N3 125.408 C2 C1 H5 120.107
C2 N4 H8 115.012 C2 N4 H10 115.266
N3 C1 H5 114.223 N4 C2 H6 114.223
H7 N3 H9 112.613 H8 N4 H10 112.613
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.013      
2 C -0.013      
3 N -0.727      
4 N -0.727      
5 H 0.177      
6 H 0.177      
7 H 0.281      
8 H 0.281      
9 H 0.281      
10 H 0.281      


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 2.204 2.204
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.370 -2.273 0.000
y -2.273 -21.385 0.000
z 0.000 0.000 -28.025
Traceless
 xyz
x 4.335 -2.273 0.000
y -2.273 2.813 0.000
z 0.000 0.000 -7.148
Polar
3z2-r2-14.296
x2-y21.015
xy-2.273
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.647 0.123 0.000
y 0.123 8.001 0.000
z 0.000 0.000 1.795


<r2> (average value of r2) Å2
<r2> 98.910
(<r2>)1/2 9.945