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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: B3PW91/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 B3PW91/cc-pVDZ
 hartrees
Energy at 0K-190.460063
Energy at 298.15K-190.470345
Nuclear repulsion energy131.473774
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 B3PW91/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 3471 3349 0.00      
2 Ag 3013 2907 0.00      
3 Ag 1651 1593 0.00      
4 Ag 1455 1404 0.00      
5 Ag 1389 1341 0.00      
6 Ag 1137 1097 0.00      
7 Ag 1071 1034 0.00      
8 Ag 865 834 0.00      
9 Ag 461 445 0.00      
10 Au 3548 3424 0.06      
11 Au 3074 2966 74.21      
12 Au 1391 1342 2.84      
13 Au 1075 1038 0.25      
14 Au 760 733 1.15      
15 Au 287 277 96.90      
16 Au 151 145 0.22      
17 Bg 3549 3425 0.00      
18 Bg 3047 2940 0.00      
19 Bg 1366 1319 0.00      
20 Bg 1292 1246 0.00      
21 Bg 947 914 0.00      
22 Bg 324 313 0.00      
23 Bu 3470 3348 2.62      
24 Bu 3019 2913 97.65      
25 Bu 1649 1591 34.96      
26 Bu 1471 1420 0.71      
27 Bu 1313 1267 30.29      
28 Bu 1111 1072 14.70      
29 Bu 902 870 351.94      
30 Bu 268 259 16.82      

Unscaled Zero Point Vibrational Energy (zpe) 24262.7 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 23413.5 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 B3PW91/cc-pVDZ
ABC
0.87575 0.12480 0.11807

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.394 0.658 0.000
C2 -0.394 -0.658 0.000
N3 -0.394 1.884 0.000
N4 0.394 -1.884 0.000
H5 1.018 -1.882 0.810
H6 1.018 -1.882 -0.810
H7 -1.018 1.882 0.810
H8 -1.018 1.882 -0.810
H9 -1.062 -0.678 -0.881
H10 -1.062 -0.678 0.881
H11 1.062 0.678 -0.881
H12 1.062 0.678 0.881

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.53491.45762.54252.73852.73852.03702.03702.16452.16451.10601.1060
C21.53492.54251.45762.03702.03702.73852.73851.10601.10602.16452.1645
N31.45762.54253.84994.10324.10321.02251.02252.79062.79062.08652.0865
N42.54251.45763.84991.02251.02254.10324.10322.08652.08652.79062.7906
H52.73852.03704.10321.02251.62024.27984.57622.93932.40503.06882.5616
H62.73852.03704.10321.02251.62024.57624.27982.40502.93932.56163.0688
H72.03702.73851.02254.10324.27984.57621.62023.06882.56162.93932.4050
H82.03702.73851.02254.10324.57624.27981.62022.56163.06882.40502.9393
H92.16451.10602.79062.08652.93932.40503.06882.56161.76262.52073.0758
H102.16451.10602.79062.08652.40502.93932.56163.06881.76263.07582.5207
H111.10602.16452.08652.79063.06882.56162.93932.40502.52073.07581.7626
H121.10602.16452.08652.79062.56163.06882.40502.93933.07582.52071.7626

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 116.317 C1 C2 H9 109.005
C1 C2 H10 109.005 C1 N3 H7 109.180
C1 N3 H8 109.180 C2 C1 N3 116.317
C2 C1 H11 109.005 C2 C1 H12 109.005
C2 N4 H5 109.180 C2 N4 H6 109.180
N3 C1 H11 108.172 N3 C1 H12 108.172
N4 C2 H9 108.172 N4 C2 H10 108.172
H5 N4 H6 104.799 H7 N3 H8 104.799
H9 C2 H10 105.650 H11 C1 H12 105.650
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.023      
2 C -0.023      
3 N -0.213      
4 N -0.213      
5 H 0.086      
6 H 0.086      
7 H 0.086      
8 H 0.086      
9 H 0.032      
10 H 0.032      
11 H 0.032      
12 H 0.032      


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 -23.684 -4.555 0.000
y -4.555 -34.563 0.000
z 0.000 0.000 -23.404
Traceless
 xyz
x 5.299 -4.555 0.000
y -4.555 -11.019 0.000
z 0.000 0.000 5.720
Polar
3z2-r211.440
x2-y210.879
xy-4.555
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.649 -0.616 0.000
y -0.616 5.953 0.000
z 0.000 0.000 5.451


<r2> (average value of r2) Å2
<r2> 106.368
(<r2>)1/2 10.313