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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: PBEPBE/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at PBEPBE/aug-cc-pVTZ
 hartrees
Energy at 0K-189.137674
Energy at 298.15K 
HF Energy-189.137674
Nuclear repulsion energy117.104461
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 PBEPBE/aug-cc-pVTZ
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 3512 3489 1.50      
2 A 3419 3396 0.02      
3 A 3063 3043 0.09      
4 A 1692 1681 0.55      
5 A 1587 1577 15.86      
6 A 1288 1279 0.46      
7 A 1244 1236 0.01      
8 A 1003 997 0.45      
9 A 886 880 68.18      
10 A 752 747 122.50      
11 A 538 534 1.98      
12 A 327 325 2.98      
13 A 237 235 16.35      
14 B 3511 3488 5.52      
15 B 3416 3394 1.36      
16 B 3068 3048 45.96      
17 B 1593 1583 45.20      
18 B 1344 1336 10.69      
19 B 1152 1144 118.01      
20 B 1088 1081 1.84      
21 B 768 763 59.19      
22 B 699 694 293.18      
23 B 343 341 39.60      
24 B 247 245 81.97      

Unscaled Zero Point Vibrational Energy (zpe) 18387.7 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 18268.1 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 PBEPBE/aug-cc-pVTZ
ABC
1.43034 0.13163 0.12231

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/aug-cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.313 0.595 0.045
C2 -0.313 -0.595 0.045
N3 -0.313 1.853 -0.115
N4 0.313 -1.853 -0.115
H5 1.407 0.640 0.048
H6 -1.407 -0.640 0.048
H7 -1.329 1.798 -0.057
H8 1.329 -1.798 -0.057
H9 0.023 2.553 0.545
H10 -0.023 -2.553 0.545

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34481.41482.45361.09442.11762.03882.60212.04183.2054
C21.34482.45361.41482.11761.09442.60212.03883.20542.0418
N31.41482.45363.75922.11102.72771.01954.00451.01944.4653
N42.45361.41483.75922.72772.11104.00451.01954.46531.0194
H51.09442.11762.11102.72773.09112.97302.44202.41283.5341
H62.11761.09442.72772.11103.09112.44202.97303.53412.4128
H72.03882.60211.01954.00452.97302.44204.47271.66164.5831
H82.60212.03884.00451.01952.44202.97304.47274.58311.6616
H92.04183.20541.01944.46532.41283.53411.66164.58315.1068
H103.20542.04184.46531.01943.53412.41284.58311.66165.1068

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.506 C1 C2 H6 120.134
C1 N3 H7 112.758 C1 N3 H9 113.025
C2 C1 N3 125.506 C2 C1 H5 120.134
C2 N4 H8 112.758 C2 N4 H10 113.025
N3 C1 H5 113.946 N4 C2 H6 113.946
H7 N3 H9 109.171 H8 N4 H10 109.171
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.161      
2 C -0.161      
3 N -0.326      
4 N -0.326      
5 H 0.374      
6 H 0.374      
7 H 0.064      
8 H 0.064      
9 H 0.048      
10 H 0.048      


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 1.899 1.899
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.374 -1.413 0.000
y -1.413 -23.129 0.000
z 0.000 0.000 -29.119
Traceless
 xyz
x 4.750 -1.413 0.000
y -1.413 2.117 0.000
z 0.000 0.000 -6.867
Polar
3z2-r2-13.735
x2-y21.756
xy-1.413
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.691 -0.149 0.000
y -0.149 10.918 0.000
z 0.000 0.000 5.558


<r2> (average value of r2) Å2
<r2> 98.850
(<r2>)1/2 9.942