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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: B3LYP/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-190.543314
Energy at 298.15K-190.553431
Nuclear repulsion energy131.074461
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/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3504 3379 0.00      
2 Ag 3020 2912 0.00      
3 Ag 1669 1609 0.00      
4 Ag 1485 1432 0.00      
5 Ag 1400 1350 0.00      
6 Ag 1102 1063 0.00      
7 Ag 1039 1002 0.00      
8 Ag 795 766 0.00      
9 Ag 456 439 0.00      
10 Au 3594 3465 2.13      
11 Au 3078 2968 76.84      
12 Au 1391 1341 0.71      
13 Au 1067 1029 0.32      
14 Au 756 729 0.24      
15 Au 256 247 117.03      
16 Au 144 139 0.06      
17 Bg 3594 3465 0.00      
18 Bg 3050 2941 0.00      
19 Bg 1369 1320 0.00      
20 Bg 1296 1250 0.00      
21 Bg 939 905 0.00      
22 Bg 288 277 0.00      
23 Bu 3504 3378 1.76      
24 Bu 3027 2919 94.47      
25 Bu 1668 1609 63.46      
26 Bu 1502 1448 0.90      
27 Bu 1332 1285 20.14      
28 Bu 1077 1038 31.51      
29 Bu 826 796 423.88      
30 Bu 272 263 21.86      

Unscaled Zero Point Vibrational Energy (zpe) 24248.8 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 23380.7 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/6-31+G**
ABC
0.87867 0.12323 0.11679

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.398 0.661 0.000
C2 -0.398 -0.661 0.000
N3 -0.398 1.890 0.000
N4 0.398 -1.890 0.000
H5 0.997 -1.943 0.820
H6 0.997 -1.943 -0.820
H7 -0.997 1.943 0.820
H8 -0.997 1.943 -0.820
H9 -1.057 -0.684 -0.879
H10 -1.057 -0.684 0.879
H11 1.057 0.684 -0.879
H12 1.057 0.684 0.879

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.54281.46412.55042.79502.79502.06452.06452.16722.16721.09821.0982
C21.54282.55041.46412.06452.06452.79502.79501.09821.09822.16722.1672
N31.46412.55043.86224.16044.16041.01661.01662.79832.79832.08342.0834
N42.55041.46413.86221.01661.01664.16044.16042.08342.08342.79832.7983
H52.79502.06454.16041.01661.63974.36794.66562.94712.40923.12932.6289
H62.79502.06454.16041.01661.63974.66564.36792.40922.94712.62893.1293
H72.06452.79501.01664.16044.36794.66561.63973.12932.62892.94712.4092
H82.06452.79501.01664.16044.66564.36791.63972.62893.12932.40922.9471
H92.16721.09822.79832.08342.94712.40923.12932.62891.75702.51773.0702
H102.16721.09822.79832.08342.40922.94712.62893.12931.75703.07022.5177
H111.09822.16722.08342.79833.12932.62892.94712.40922.51773.07021.7570
H121.09822.16722.08342.79832.62893.12932.40922.94713.07022.51771.7570

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 116.008 C1 C2 H9 109.131
C1 C2 H10 109.131 C1 N3 H7 111.373
C1 N3 H8 111.373 C2 C1 N3 116.008
C2 C1 H11 109.131 C2 C1 H12 109.131
C2 N4 H5 111.373 C2 N4 H6 111.373
N3 C1 H11 107.944 N3 C1 H12 107.944
N4 C2 H9 107.944 N4 C2 H10 107.944
H5 N4 H6 107.509 H7 N3 H8 107.509
H9 C2 H10 106.246 H11 C1 H12 106.246
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.221      
2 C -0.221      
3 N -0.618      
4 N -0.618      
5 H 0.284      
6 H 0.284      
7 H 0.284      
8 H 0.284      
9 H 0.135      
10 H 0.135      
11 H 0.135      
12 H 0.135      


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 -24.862 -5.230 0.000
y -5.230 -37.197 0.000
z 0.000 0.000 -23.648
Traceless
 xyz
x 5.560 -5.230 0.000
y -5.230 -12.942 0.000
z 0.000 0.000 7.382
Polar
3z2-r214.763
x2-y212.335
xy-5.230
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.481 -0.293 0.000
y -0.293 7.398 0.000
z 0.000 0.000 5.810


<r2> (average value of r2) Å2
<r2> 108.366
(<r2>)1/2 10.410