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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-189.932976
Energy at 298.15K-189.943274
HF Energy-189.308139
Nuclear repulsion energy131.633014
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 MP2/6-311G*
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 3540 3364 0.00      
2 Ag 3067 2915 0.00      
3 Ag 1743 1656 0.00      
4 Ag 1517 1441 0.00      
5 Ag 1423 1352 0.00      
6 Ag 1156 1098 0.00      
7 Ag 1102 1048 0.00      
8 Ag 893 848 0.00      
9 Ag 467 444 0.00      
10 Au 3636 3455 0.03      
11 Au 3139 2983 69.84      
12 Au 1437 1365 2.91      
13 Au 1100 1045 0.13      
14 Au 760 723 0.25      
15 Au 275 262 120.70      
16 Au 153 145 0.81      
17 Bg 3637 3456 0.00      
18 Bg 3112 2957 0.00      
19 Bg 1406 1336 0.00      
20 Bg 1338 1271 0.00      
21 Bg 966 918 0.00      
22 Bg 306 290 0.00      
23 Bu 3540 3364 1.99      
24 Bu 3074 2922 84.48      
25 Bu 1741 1654 70.09      
26 Bu 1535 1458 2.85      
27 Bu 1352 1285 21.79      
28 Bu 1121 1065 6.98      
29 Bu 938 891 459.22      
30 Bu 276 262 21.07      

Unscaled Zero Point Vibrational Energy (zpe) 24872.3 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 23636.2 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 MP2/6-311G*
ABC
0.88108 0.12462 0.11802

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.397 0.658 0.000
C2 -0.397 -0.658 0.000
N3 -0.397 1.886 0.000
N4 0.397 -1.886 0.000
H5 0.996 -1.913 0.817
H6 0.996 -1.913 -0.817
H7 -0.996 1.913 0.817
H8 -0.996 1.913 -0.817
H9 -1.052 -0.677 -0.878
H10 -1.052 -0.677 0.878
H11 1.052 0.677 -0.878
H12 1.052 0.677 0.878

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.53721.46182.54422.76372.76372.04462.04462.15712.15711.09611.0961
C21.53722.54421.46182.04462.04462.76372.76371.09611.09612.15712.1571
N31.46182.54423.85454.12794.12791.01311.01312.78712.78712.08172.0817
N42.54421.46183.85451.01311.01314.12794.12792.08172.08172.78712.7871
H52.76372.04464.12791.01311.63364.31354.61242.93192.39303.09582.5912
H62.76372.04464.12791.01311.63364.61244.31352.39302.93192.59123.0958
H72.04462.76371.01314.12794.31354.61241.63363.09582.59122.93192.3930
H82.04462.76371.01314.12794.61244.31351.63362.59123.09582.39302.9319
H92.15711.09612.78712.08172.93192.39303.09582.59121.75652.50223.0572
H102.15711.09612.78712.08172.39302.93192.59123.09581.75653.05722.5022
H111.09612.15712.08172.78713.09582.59122.93192.39302.50223.05721.7565
H121.09612.15712.08172.78712.59123.09582.39302.93193.05722.50221.7565

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 116.042 C1 C2 H9 108.851
C1 C2 H10 108.851 C1 N3 H7 110.086
C1 N3 H8 110.086 C2 C1 N3 116.042
C2 C1 H11 108.851 C2 C1 H12 108.851
C2 N4 H5 110.086 C2 N4 H6 110.086
N3 C1 H11 108.094 N3 C1 H12 108.094
N4 C2 H9 108.094 N4 C2 H10 108.094
H5 N4 H6 107.459 H7 N3 H8 107.459
H9 C2 H10 106.501 H11 C1 H12 106.501
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability