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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: CISD/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 CISD/6-311G*
 hartrees
Energy at 0K-189.880225
Energy at 298.15K-189.890584
Nuclear repulsion energy132.188541
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 CISD/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 3641 3369 0.00      
2 Ag 3123 2890 0.00      
3 Ag 1792 1658 0.00      
4 Ag 1559 1443 0.00      
5 Ag 1481 1370 0.00      
6 Ag 1180 1092 0.00      
7 Ag 1132 1047 0.00      
8 Ag 911 843 0.00      
9 Ag 480 444 0.00      
10 Au 3721 3443 0.02      
11 Au 3181 2944 86.82      
12 Au 1475 1364 1.91      
13 Au 1125 1041 0.25      
14 Au 778 720 0.12      
15 Au 273 253 121.49      
16 Au 152 141 0.98      
17 Bg 3721 3443 0.00      
18 Bg 3153 2918 0.00      
19 Bg 1444 1337 0.00      
20 Bg 1372 1269 0.00      
21 Bg 989 915 0.00      
22 Bg 302 279 0.00      
23 Bu 3639 3367 1.56      
24 Bu 3128 2894 97.48      
25 Bu 1790 1657 70.70      
26 Bu 1576 1458 2.11      
27 Bu 1396 1292 27.20      
28 Bu 1148 1063 14.98      
29 Bu 956 884 459.07      
30 Bu 287 265 21.21      

Unscaled Zero Point Vibrational Energy (zpe) 25451.4 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 23550.2 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 CISD/6-311G*
ABC
0.88646 0.12574 0.11901

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.397 0.654 0.000
C2 -0.397 -0.654 0.000
N3 -0.397 1.874 0.000
N4 0.397 -1.874 0.000
H5 0.994 -1.901 0.810
H6 0.994 -1.901 -0.810
H7 -0.994 1.901 0.810
H8 -0.994 1.901 -0.810
H9 -1.052 -0.676 -0.874
H10 -1.052 -0.676 0.874
H11 1.052 0.676 -0.874
H12 1.052 0.676 0.874

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.53061.45562.52772.74572.74572.03632.03632.15232.15231.09161.0916
C21.53062.52771.45562.03632.03632.74572.74571.09161.09162.15232.1523
N31.45562.52773.83064.10344.10341.00641.00642.77382.77382.07262.0726
N42.52771.45563.83061.00641.00644.10344.10342.07262.07262.77382.7738
H52.74572.03634.10341.00641.61954.29014.58562.91862.38513.07862.5785
H62.74572.03634.10341.00641.61954.58564.29012.38512.91862.57853.0786
H72.03632.74571.00644.10344.29014.58561.61953.07862.57852.91862.3851
H82.03632.74571.00644.10344.58564.29011.61952.57853.07862.38512.9186
H92.15231.09162.77382.07262.91862.38513.07862.57851.74702.50063.0505
H102.15231.09162.77382.07262.38512.91862.57853.07861.74703.05052.5006
H111.09162.15232.07262.77383.07862.57852.91862.38512.50063.05051.7470
H121.09162.15232.07262.77382.57853.07862.38512.91863.05052.50061.7470

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 115.633 C1 C2 H9 109.187
C1 C2 H10 109.187 C1 N3 H7 110.264
C1 N3 H8 110.264 C2 C1 N3 115.633
C2 C1 H11 109.187 C2 C1 H12 109.187
C2 N4 H5 110.264 C2 N4 H6 110.264
N3 C1 H11 108.064 N3 C1 H12 108.064
N4 C2 H9 108.064 N4 C2 H10 108.064
H5 N4 H6 107.144 H7 N3 H8 107.144
H9 C2 H10 106.305 H11 C1 H12 106.305
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability