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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-190.488620
Energy at 298.15K-190.498836
Nuclear repulsion energy131.944749
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 mPW1PW91/6-31G(2df,p)
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 3531 3371 0.00      
2 Ag 3033 2896 0.00      
3 Ag 1672 1596 0.00      
4 Ag 1482 1415 0.00      
5 Ag 1405 1341 0.00      
6 Ag 1143 1091 0.00      
7 Ag 1074 1026 0.00      
8 Ag 855 816 0.00      
9 Ag 461 441 0.00      
10 Au 3613 3450 0.51      
11 Au 3096 2956 65.14      
12 Au 1405 1341 1.35      
13 Au 1078 1030 0.26      
14 Au 757 722 0.98      
15 Au 265 253 99.94      
16 Au 149 142 0.09      
17 Bg 3614 3451 0.00      
18 Bg 3068 2929 0.00      
19 Bg 1381 1318 0.00      
20 Bg 1307 1248 0.00      
21 Bg 949 906 0.00      
22 Bg 302 288 0.00      
23 Bu 3531 3371 0.26      
24 Bu 3042 2904 86.47      
25 Bu 1671 1595 42.56      
26 Bu 1500 1432 0.63      
27 Bu 1331 1270 24.02      
28 Bu 1116 1066 13.40      
29 Bu 890 850 373.91      
30 Bu 267 255 16.42      

Unscaled Zero Point Vibrational Energy (zpe) 24492.8 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 23383.3 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 mPW1PW91/6-31G(2df,p)
ABC
0.88211 0.12551 0.11874

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.396 0.656 0.000
C2 -0.396 -0.656 0.000
N3 -0.396 1.877 0.000
N4 0.396 -1.877 0.000
H5 1.007 -1.887 0.809
H6 1.007 -1.887 -0.809
H7 -1.007 1.887 0.809
H8 -1.007 1.887 -0.809
H9 -1.057 -0.675 -0.876
H10 -1.057 -0.675 0.876
H11 1.057 0.675 -0.876
H12 1.057 0.675 0.876

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.53261.45522.53362.73802.73802.03392.03392.15602.15601.09741.0974
C21.53262.53361.45522.03392.03392.73802.73801.09741.09742.15602.1560
N31.45522.53363.83734.09804.09801.01381.01382.77812.77812.07912.0791
N42.53361.45523.83731.01381.01384.09804.09802.07912.07912.77812.7781
H52.73802.03394.09801.01381.61734.27814.57362.92682.39443.06662.5634
H62.73802.03394.09801.01381.61734.57364.27812.39442.92682.56343.0666
H72.03392.73801.01384.09804.27814.57361.61733.06662.56342.92682.3944
H82.03392.73801.01384.09804.57364.27811.61732.56343.06662.39442.9268
H92.15601.09742.77812.07912.92682.39443.06662.56341.75172.50753.0588
H102.15601.09742.77812.07912.39442.92682.56343.06661.75173.05882.5075
H111.09742.15602.07912.77813.06662.56342.92682.39442.50753.05881.7517
H121.09742.15602.07912.77812.56343.06662.39442.92683.05882.50751.7517

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 115.962 C1 C2 H9 108.998
C1 C2 H10 108.998 C1 N3 H7 109.637
C1 N3 H8 109.637 C2 C1 N3 115.962
C2 C1 H11 108.998 C2 C1 H12 108.998
C2 N4 H5 109.637 C2 N4 H6 109.637
N3 C1 H11 108.259 N3 C1 H12 108.259
N4 C2 H9 108.259 N4 C2 H10 108.259
H5 N4 H6 105.814 H7 N3 H8 105.814
H9 C2 H10 105.900 H11 C1 H12 105.900
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.187      
2 C -0.187      
3 N -0.557      
4 N -0.557      
5 H 0.248      
6 H 0.248      
7 H 0.248      
8 H 0.248      
9 H 0.124      
10 H 0.124      
11 H 0.124      
12 H 0.124      


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 -23.519 -4.512 0.000
y -4.512 -34.678 0.000
z 0.000 0.000 -23.013
Traceless
 xyz
x 5.326 -4.512 0.000
y -4.512 -11.412 0.000
z 0.000 0.000 6.086
Polar
3z2-r212.172
x2-y211.159
xy-4.512
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.485 -0.638 0.000
y -0.638 5.981 0.000
z 0.000 0.000 5.388


<r2> (average value of r2) Å2
<r2> 105.764
(<r2>)1/2 10.284