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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-189.971139
Energy at 298.15K-189.981486
HF Energy-189.286328
Nuclear repulsion energy131.751420
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 3566 3343 0.00      
2 Ag 3101 2908 0.00      
3 Ag 1717 1610 0.00      
4 Ag 1546 1449 0.00      
5 Ag 1460 1369 0.00      
6 Ag 1163 1090 0.00      
7 Ag 1114 1045 0.00      
8 Ag 894 838 0.00      
9 Ag 474 444 0.00      
10 Au 3657 3429 0.41      
11 Au 3166 2968 73.33      
12 Au 1439 1349 1.87      
13 Au 1102 1033 0.75      
14 Au 773 725 0.03      
15 Au 285 267 120.17      
16 Au 155 145 0.26      
17 Bg 3658 3429 0.00      
18 Bg 3141 2945 0.00      
19 Bg 1414 1326 0.00      
20 Bg 1347 1263 0.00      
21 Bg 971 910 0.00      
22 Bg 317 297 0.00      
23 Bu 3566 3343 1.50      
24 Bu 3108 2914 82.46      
25 Bu 1715 1608 46.43      
26 Bu 1563 1465 0.15      
27 Bu 1373 1287 31.17      
28 Bu 1128 1057 6.96      
29 Bu 937 878 388.99      
30 Bu 283 265 20.34      

Unscaled Zero Point Vibrational Energy (zpe) 25064.2 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 23500.2 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 CCD/6-31G**
ABC
0.87895 0.12512 0.11835

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 0.399 0.654 0.000
C2 -0.399 -0.654 0.000
N3 -0.399 1.882 0.000
N4 0.399 -1.882 0.000
H5 1.010 -1.884 0.809
H6 1.010 -1.884 -0.809
H7 -1.010 1.884 0.809
H8 -1.010 1.884 -0.809
H9 -1.053 -0.676 -0.876
H10 -1.053 -0.676 0.876
H11 1.053 0.676 -0.876
H12 1.053 0.676 0.876

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.53261.46352.53592.73402.73402.03812.03812.15532.15531.09371.0937
C21.53262.53591.46352.03812.03812.73402.73401.09371.09372.15532.1553
N31.46352.53593.84664.10164.10161.01461.01462.78162.78162.08052.0805
N42.53591.46353.84661.01461.01464.10164.10162.08052.08052.78162.7816
H52.73402.03814.10161.01461.61884.27654.57262.92562.39223.06572.5618
H62.73402.03814.10161.01461.61884.57264.27652.39222.92562.56183.0657
H72.03812.73401.01464.10164.27654.57261.61883.06572.56182.92562.3922
H82.03812.73401.01464.10164.57264.27651.61882.56183.06572.39222.9256
H92.15531.09372.78162.08052.92562.39223.06572.56181.75202.50303.0552
H102.15531.09372.78162.08052.39222.92562.56183.06571.75203.05522.5030
H111.09372.15532.08052.78163.06572.56182.92562.39222.50303.05521.7520
H121.09372.15532.08052.78162.56183.06572.39222.92563.05522.50301.7520

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 115.630 C1 C2 H9 109.165
C1 C2 H10 109.165 C1 N3 H7 109.325
C1 N3 H8 109.325 C2 C1 N3 115.630
C2 C1 H11 109.165 C2 C1 H12 109.165
C2 N4 H5 109.325 C2 N4 H6 109.325
N3 C1 H11 108.024 N3 C1 H12 108.024
N4 C2 H9 108.024 N4 C2 H10 108.024
H5 N4 H6 105.840 H7 N3 H8 105.840
H9 C2 H10 106.445 H11 C1 H12 106.445
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability