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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: CCD/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-189.973002
Energy at 298.15K-189.983374
HF Energy-189.288231
Nuclear repulsion energy131.160884
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/cc-pVDZ
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 3495 3343 0.00      
2 Ag 3049 2917 0.00      
3 Ag 1676 1604 0.00      
4 Ag 1488 1424 0.00      
5 Ag 1426 1364 0.00      
6 Ag 1160 1110 0.00      
7 Ag 1113 1064 0.00      
8 Ag 908 869 0.00      
9 Ag 470 450 0.00      
10 Au 3576 3421 0.71      
11 Au 3112 2977 75.36      
12 Au 1417 1356 2.83      
13 Au 1089 1042 0.83      
14 Au 766 733 0.11      
15 Au 293 280 100.24      
16 Au 154 148 0.38      
17 Bg 3577 3422 0.00      
18 Bg 3087 2953 0.00      
19 Bg 1392 1332 0.00      
20 Bg 1314 1257 0.00      
21 Bg 961 920 0.00      
22 Bg 327 313 0.00      
23 Bu 3495 3343 3.00      
24 Bu 3053 2921 88.63      
25 Bu 1674 1602 34.93      
26 Bu 1504 1439 0.33      
27 Bu 1341 1283 38.19      
28 Bu 1125 1076 6.46      
29 Bu 960 919 317.64      
30 Bu 279 267 17.57      

Unscaled Zero Point Vibrational Energy (zpe) 24640.3 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 23573.4 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/cc-pVDZ
ABC
0.86515 0.12460 0.11775

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.399 0.658 0.000
C2 -0.399 -0.658 0.000
N3 -0.399 1.888 0.000
N4 0.399 -1.888 0.000
H5 1.027 -1.863 0.809
H6 1.027 -1.863 -0.809
H7 -1.027 1.863 0.809
H8 -1.027 1.863 -0.809
H9 -1.064 -0.677 -0.886
H10 -1.064 -0.677 0.886
H11 1.064 0.677 -0.886
H12 1.064 0.677 0.886

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.53841.46682.54572.72062.72062.03522.03522.16992.16991.10821.1082
C21.53842.54571.46682.03522.03522.72062.72061.10821.10822.16992.1699
N31.46682.54573.85984.09384.09381.02471.02472.79442.79442.09602.0960
N42.54571.46683.85981.02471.02474.09384.09382.09602.09602.79442.7944
H52.72062.03524.09381.02471.61824.25474.55202.94182.40563.05392.5415
H62.72062.03524.09381.02471.61824.55204.25472.40562.94182.54153.0539
H72.03522.72061.02474.09384.25474.55201.61823.05392.54152.94182.4056
H82.03522.72061.02474.09384.55204.25471.61822.54153.05392.40562.9418
H92.16991.10822.79442.09602.94182.40563.05392.54151.77212.52303.0832
H102.16991.10822.79442.09602.40562.94182.54153.05391.77213.08322.5230
H111.10822.16992.09602.79443.05392.54152.94182.40562.52303.08321.7721
H121.10822.16992.09602.79442.54153.05392.40562.94183.08322.52301.7721

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 115.777 C1 C2 H9 109.064
C1 C2 H10 109.064 C1 N3 H7 108.234
C1 N3 H8 108.234 C2 C1 N3 115.777
C2 C1 H11 109.064 C2 C1 H12 109.064
C2 N4 H5 108.234 C2 N4 H6 108.234
N3 C1 H11 108.168 N3 C1 H12 108.168
N4 C2 H9 108.168 N4 C2 H10 108.168
H5 N4 H6 104.297 H7 N3 H8 104.297
H9 C2 H10 106.178 H11 C1 H12 106.178
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability