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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: CCD/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at CCD/6-31G
 hartrees
Energy at 0K-189.629755
Energy at 298.15K-189.639878
HF Energy-189.184268
Nuclear repulsion energy129.867482
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 CCD/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 Ag 3515 3373 0.00      
2 Ag 3007 2885 0.00      
3 Ag 1746 1675 0.00      
4 Ag 1535 1472 0.00      
5 Ag 1430 1372 0.00      
6 Ag 1126 1080 0.00      
7 Ag 1047 1004 0.00      
8 Ag 716 687 0.00      
9 Ag 469 450 0.00      
10 Au 3626 3479 0.00      
11 Au 3068 2944 77.74      
12 Au 1410 1353 0.46      
13 Au 1085 1041 0.04      
14 Au 758 727 0.37      
15 Au 267 256 135.76      
16 Au 151 145 0.06      
17 Bg 3626 3480 0.00      
18 Bg 3041 2918 0.00      
19 Bg 1388 1332 0.00      
20 Bg 1336 1282 0.00      
21 Bg 952 914 0.00      
22 Bg 293 281 0.00      
23 Bu 3515 3372 0.98      
24 Bu 3013 2891 85.35      
25 Bu 1746 1676 55.92      
26 Bu 1552 1489 1.46      
27 Bu 1365 1310 9.81      
28 Bu 1095 1051 15.52      
29 Bu 735 705 635.87      
30 Bu 277 266 24.07      

Unscaled Zero Point Vibrational Energy (zpe) 24444.5 cm-1
Scaled (by 0.9595) Zero Point Vibrational Energy (zpe) 23454.5 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 CCD/6-31G
ABC
0.86772 0.12061 0.11453

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.405 0.664 0.000
C2 -0.405 -0.664 0.000
N3 -0.405 1.902 0.000
N4 0.405 -1.902 0.000
H5 0.967 -2.027 0.840
H6 0.967 -2.027 -0.840
H7 -0.967 2.027 0.840
H8 -0.967 2.027 -0.840
H9 -1.064 -0.686 -0.886
H10 -1.064 -0.686 0.886
H11 1.064 0.686 -0.886
H12 1.064 0.686 0.886

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.55561.47932.56572.87402.87402.10792.10792.18332.18331.10471.1047
C21.55562.56571.47932.10792.10792.87402.87401.10471.10472.18332.1833
N31.47932.56573.88874.24484.24481.01791.01792.81362.81362.10292.1029
N42.56571.47933.88871.01791.01794.24484.24482.10292.10292.81362.8136
H52.87402.10794.24481.01791.67954.49064.79442.98332.43383.21672.7149
H62.87402.10794.24481.01791.67954.79444.49062.43382.98332.71493.2167
H72.10792.87401.01794.24484.49064.79441.67953.21672.71492.98332.4338
H82.10792.87401.01794.24484.79444.49061.67952.71493.21672.43382.9833
H92.18331.10472.81362.10292.98332.43383.21672.71491.77222.53263.0911
H102.18331.10472.81362.10292.43382.98332.71493.21671.77223.09112.5326
H111.10472.18332.10292.81363.21672.71492.98332.43382.53263.09111.7722
H121.10472.18332.10292.81362.71493.21672.43382.98333.09112.53261.7722

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 115.409 C1 C2 H9 109.138
C1 C2 H10 109.138 C1 N3 H7 113.878
C1 N3 H8 113.878 C2 C1 N3 115.409
C2 C1 H11 109.138 C2 C1 H12 109.138
C2 N4 H5 113.878 C2 N4 H6 113.878
N3 C1 H11 108.067 N3 C1 H12 108.067
N4 C2 H9 108.067 N4 C2 H10 108.067
H5 N4 H6 111.183 H7 N3 H8 111.183
H9 C2 H10 106.672 H11 C1 H12 106.672
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability