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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: B3LYP/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B3LYP/CEP-121G
 hartrees
Energy at 0K-35.864151
Energy at 298.15K-35.874008
Nuclear repulsion energy76.913508
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 B3LYP/CEP-121G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 3493 3404 0.00      
2 Ag 2981 2905 0.00      
3 Ag 1696 1653 0.00      
4 Ag 1496 1458 0.00      
5 Ag 1394 1358 0.00      
6 Ag 1100 1072 0.00      
7 Ag 1016 990 0.00      
8 Ag 598 582 0.00      
9 Ag 446 435 0.00      
10 Au 3620 3528 0.70      
11 Au 3053 2976 113.40      
12 Au 1371 1336 0.29      
13 Au 1049 1022 0.52      
14 Au 756 737 1.00      
15 Au 235 229 109.87      
16 Au 133 130 0.00      
17 Bg 3620 3528 0.00      
18 Bg 3020 2943 0.00      
19 Bg 1356 1322 0.00      
20 Bg 1285 1252 0.00      
21 Bg 924 900 0.00      
22 Bg 261 254 0.00      
23 Bu 3493 3403 5.41      
24 Bu 2987 2911 135.32      
25 Bu 1697 1653 68.89      
26 Bu 1516 1478 2.01      
27 Bu 1335 1301 12.31      
28 Bu 1078 1050 48.15      
29 Bu 608 593 650.31      
30 Bu 263 256 26.28      

Unscaled Zero Point Vibrational Energy (zpe) 23940.5 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 23330.0 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 B3LYP/CEP-121G
ABC
0.87001 0.11967 0.11372

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.406 0.668 0.000
C2 -0.406 -0.668 0.000
N3 -0.406 1.905 0.000
N4 0.406 -1.905 0.000
H5 0.951 -2.062 0.844
H6 0.951 -2.062 -0.844
H7 -0.951 2.062 0.844
H8 -0.951 2.062 -0.844
H9 -1.065 -0.687 -0.882
H10 -1.065 -0.687 0.882
H11 1.065 0.687 -0.882
H12 1.065 0.687 0.882

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.56401.48022.57362.90902.90902.12072.12072.18562.18561.10061.1006
C21.56402.57361.48022.12072.12072.90902.90901.10061.10062.18562.1856
N31.48022.57363.89654.27724.27721.01661.01662.81592.81592.10402.1040
N42.57361.48023.89651.01661.01664.27724.27722.10402.10402.81592.8159
H52.90902.12074.27721.01661.68764.54144.84492.98882.44073.24722.7510
H62.90902.12074.27721.01661.68764.84494.54142.44072.98882.75103.2472
H72.12072.90901.01664.27724.54144.84491.68763.24722.75102.98882.4407
H82.12072.90901.01664.27724.84494.54141.68762.75103.24722.44072.9888
H92.18561.10062.81592.10402.98882.44073.24722.75101.76342.53393.0871
H102.18561.10062.81592.10402.44072.98882.75103.24721.76343.08712.5339
H111.10062.18562.10402.81593.24722.75102.98882.44072.53393.08711.7634
H121.10062.18562.10402.81592.75103.24722.44072.98883.08712.53391.7634

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 115.403 C1 C2 H9 108.972
C1 C2 H10 108.972 C1 N3 H7 115.020
C1 N3 H8 115.020 C2 C1 N3 115.403
C2 C1 H11 108.972 C2 C1 H12 108.972
C2 N4 H5 115.020 C2 N4 H6 115.020
N3 C1 H11 108.330 N3 C1 H12 108.330
N4 C2 H9 108.330 N4 C2 H10 108.330
H5 N4 H6 112.201 H7 N3 H8 112.201
H9 C2 H10 106.471 H11 C1 H12 106.471
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.222      
2 C -0.222      
3 N -0.546      
4 N -0.546      
5 H 0.260      
6 H 0.260      
7 H 0.260      
8 H 0.260      
9 H 0.124      
10 H 0.124      
11 H 0.124      
12 H 0.124      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.960 -6.076 0.000
y -6.076 -34.546 0.000
z 0.000 0.000 -23.051
Traceless
 xyz
x 3.838 -6.076 0.000
y -6.076 -10.540 0.000
z 0.000 0.000 6.702
Polar
3z2-r213.405
x2-y29.585
xy-6.076
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.788 -0.536 0.000
y -0.536 6.316 0.000
z 0.000 0.000 5.786


<r2> (average value of r2) Å2
<r2> 93.034
(<r2>)1/2 9.645