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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: HF/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at HF/cc-pVTZ
 hartrees
Energy at 0K-189.349408
Energy at 298.15K-189.359831
Nuclear repulsion energy132.635628
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 HF/cc-pVTZ
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 3716 3382 0.00      
2 Ag 3147 2864 0.00      
3 Ag 1795 1634 0.00      
4 Ag 1609 1464 0.00      
5 Ag 1536 1398 0.00      
6 Ag 1187 1080 0.00      
7 Ag 1142 1039 0.00      
8 Ag 895 814 0.00      
9 Ag 491 447 0.00      
10 Au 3795 3454 1.94      
11 Au 3195 2908 104.68      
12 Au 1504 1369 0.36      
13 Au 1146 1043 0.32      
14 Au 813 740 0.18      
15 Au 268 244 98.64      
16 Au 157 143 0.38      
17 Bg 3795 3454 0.00      
18 Bg 3163 2878 0.00      
19 Bg 1481 1347 0.00      
20 Bg 1405 1279 0.00      
21 Bg 1011 920 0.00      
22 Bg 295 268 0.00      
23 Bu 3716 3382 0.92      
24 Bu 3152 2869 113.91      
25 Bu 1794 1633 54.50      
26 Bu 1625 1479 0.89      
27 Bu 1446 1316 28.56      
28 Bu 1153 1049 36.13      
29 Bu 934 850 409.08      
30 Bu 302 274 17.93      

Unscaled Zero Point Vibrational Energy (zpe) 25832.8 cm-1
Scaled (by 0.9101) Zero Point Vibrational Energy (zpe) 23510.5 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 HF/cc-pVTZ
ABC
0.89268 0.12648 0.11968

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.398 0.652 0.000
C2 -0.398 -0.652 0.000
N3 -0.398 1.866 0.000
N4 0.398 -1.866 0.000
H5 0.987 -1.913 0.805
H6 0.987 -1.913 -0.805
H7 -0.987 1.913 0.805
H8 -0.987 1.913 -0.805
H9 -1.049 -0.674 -0.869
H10 -1.049 -0.674 0.869
H11 1.049 0.674 -0.869
H12 1.049 0.674 0.869

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.52791.45102.51782.75222.75222.03852.03852.14602.14601.08591.0859
C21.52792.51781.45102.03852.03852.75222.75221.08591.08592.14602.1460
N31.45102.51783.81504.10414.10410.99840.99842.76142.76142.06612.0661
N42.51781.45103.81500.99840.99844.10414.10412.06612.06612.76142.7614
H52.75222.03854.10410.99841.60904.30554.59632.91242.38453.08122.5881
H62.75222.03854.10410.99841.60904.59634.30552.38452.91242.58813.0812
H72.03852.75220.99844.10414.30554.59631.60903.08122.58812.91242.3845
H82.03852.75220.99844.10414.59634.30551.60902.58813.08122.38452.9124
H92.14601.08592.76142.06612.91242.38453.08122.58811.73772.49293.0388
H102.14601.08592.76142.06612.38452.91242.58813.08121.73773.03882.4929
H111.08592.14602.06612.76143.08122.58812.91242.38452.49293.03881.7377
H121.08592.14602.06612.76142.58813.08122.38452.91243.03882.49291.7377

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 115.360 C1 C2 H9 109.206
C1 C2 H10 109.206 C1 N3 H7 111.312
C1 N3 H8 111.312 C2 C1 N3 115.360
C2 C1 H11 109.206 C2 C1 H12 109.206
C2 N4 H5 111.312 C2 N4 H6 111.312
N3 C1 H11 108.200 N3 C1 H12 108.200
N4 C2 H9 108.200 N4 C2 H10 108.200
H5 N4 H6 107.375 H7 N3 H8 107.375
H9 C2 H10 106.285 H11 C1 H12 106.285
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.062      
2 C -0.062      
3 N -0.381      
4 N -0.381      
5 H 0.139      
6 H 0.139      
7 H 0.139      
8 H 0.139      
9 H 0.082      
10 H 0.082      
11 H 0.082      
12 H 0.082      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.196 -4.640 0.000
y -4.640 -35.428 0.000
z 0.000 0.000 -23.243
Traceless
 xyz
x 5.139 -4.640 0.000
y -4.640 -11.708 0.000
z 0.000 0.000 6.569
Polar
3z2-r213.138
x2-y211.232
xy-4.640
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.748 -0.488 0.000
y -0.488 6.237 0.000
z 0.000 0.000 5.513


<r2> (average value of r2) Å2
<r2> 105.544
(<r2>)1/2 10.273