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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: mPW1PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at mPW1PW91/3-21G
 hartrees
Energy at 0K-189.415171
Energy at 298.15K-189.425263
Nuclear repulsion energy130.766565
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 mPW1PW91/3-21G
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 3462 3305 0.00      
2 Ag 3057 2918 0.00      
3 Ag 1731 1652 0.00      
4 Ag 1533 1463 0.00      
5 Ag 1407 1343 0.00      
6 Ag 1114 1063 0.00      
7 Ag 1016 970 0.00      
8 Ag 679 648 0.00      
9 Ag 459 438 0.00      
10 Au 3564 3402 0.03      
11 Au 3125 2983 60.60      
12 Au 1414 1350 2.92      
13 Au 1100 1050 0.01      
14 Au 760 725 2.26      
15 Au 280 267 138.97      
16 Au 153 146 0.52      
17 Bg 3564 3402 0.00      
18 Bg 3094 2953 0.00      
19 Bg 1398 1334 0.00      
20 Bg 1326 1266 0.00      
21 Bg 949 906 0.00      
22 Bg 306 292 0.00      
23 Bu 3461 3304 1.20      
24 Bu 3067 2927 77.42      
25 Bu 1731 1652 45.63      
26 Bu 1550 1479 3.50      
27 Bu 1351 1289 2.98      
28 Bu 1092 1042 10.64      
29 Bu 688 657 586.99      
30 Bu 257 246 21.66      

Unscaled Zero Point Vibrational Energy (zpe) 24341.3 cm-1
Scaled (by 0.9546) Zero Point Vibrational Energy (zpe) 23236.2 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 mPW1PW91/3-21G
ABC
0.86846 0.12313 0.11674

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.405 0.658 0.000
C2 -0.405 -0.658 0.000
N3 -0.405 1.886 0.000
N4 0.405 -1.886 0.000
H5 0.984 -1.968 0.836
H6 0.984 -1.968 -0.836
H7 -0.984 1.968 0.836
H8 -0.984 1.968 -0.836
H9 -1.057 -0.676 -0.882
H10 -1.057 -0.676 0.882
H11 1.057 0.676 -0.882
H12 1.057 0.676 0.882

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.54591.47082.54442.81642.81642.08422.08422.16652.16651.09691.0969
C21.54592.54441.47082.08422.08422.81642.81641.09691.09692.16652.1665
N31.47082.54443.85804.18114.18111.02061.02062.78652.78652.09272.0927
N42.54441.47083.85801.02061.02064.18114.18112.09272.09272.78652.7865
H52.81642.08424.18111.02061.67274.40044.70762.96442.41593.15382.6448
H62.81642.08424.18111.02061.67274.70764.40042.41592.96442.64483.1538
H72.08422.81641.02064.18114.40044.70761.67273.15382.64482.96442.4159
H82.08422.81641.02064.18114.70764.40041.67272.64483.15382.41592.9644
H92.16651.09692.78652.09272.96442.41593.15382.64481.76442.50823.0666
H102.16651.09692.78652.09272.41592.96442.64483.15381.76443.06662.5082
H111.09692.16652.09272.78653.15382.64482.96442.41592.50823.06661.7644
H121.09692.16652.09272.78652.64483.15382.41592.96443.06662.50821.7644

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 114.987 C1 C2 H9 108.942
C1 C2 H10 108.942 C1 N3 H7 112.299
C1 N3 H8 112.299 C2 C1 N3 114.987
C2 C1 H11 108.942 C2 C1 H12 108.942
C2 N4 H5 112.299 C2 N4 H6 112.299
N3 C1 H11 108.303 N3 C1 H12 108.303
N4 C2 H9 108.303 N4 C2 H10 108.303
H5 N4 H6 110.064 H7 N3 H8 110.064
H9 C2 H10 107.082 H11 C1 H12 107.082
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.294      
2 C -0.294      
3 N -0.698      
4 N -0.698      
5 H 0.281      
6 H 0.281      
7 H 0.281      
8 H 0.281      
9 H 0.215      
10 H 0.215      
11 H 0.215      
12 H 0.215      


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 -23.174 -5.630 0.000
y -5.630 -35.032 0.000
z 0.000 0.000 -22.745
Traceless
 xyz
x 5.714 -5.630 0.000
y -5.630 -12.072 0.000
z 0.000 0.000 6.358
Polar
3z2-r212.715
x2-y211.858
xy-5.630
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.601 -0.856 0.000
y -0.856 4.970 0.000
z 0.000 0.000 4.908


<r2> (average value of r2) Å2
<r2> 107.656
(<r2>)1/2 10.376