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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: HF/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 HF/cc-pVDZ
 hartrees
Energy at 0K-189.290399
Energy at 298.15K-189.300909
Nuclear repulsion energy132.345525
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-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 3707 3366 0.00      
2 Ag 3165 2874 0.00      
3 Ag 1791 1627 0.00      
4 Ag 1591 1445 0.00      
5 Ag 1534 1393 0.00      
6 Ag 1202 1091 0.00      
7 Ag 1158 1052 0.00      
8 Ag 933 847 0.00      
9 Ag 496 450 0.00      
10 Au 3783 3435 0.65      
11 Au 3219 2923 111.18      
12 Au 1505 1367 1.15      
13 Au 1148 1043 0.43      
14 Au 814 739 0.18      
15 Au 293 266 104.73      
16 Au 159 144 0.91      
17 Bg 3784 3436 0.00      
18 Bg 3188 2895 0.00      
19 Bg 1479 1343 0.00      
20 Bg 1401 1272 0.00      
21 Bg 1016 923 0.00      
22 Bg 324 294 0.00      
23 Bu 3707 3366 0.42      
24 Bu 3167 2875 122.56      
25 Bu 1790 1625 47.01      
26 Bu 1605 1458 0.61      
27 Bu 1436 1304 42.66      
28 Bu 1168 1061 32.36      
29 Bu 979 889 381.03      
30 Bu 302 275 17.52      

Unscaled Zero Point Vibrational Energy (zpe) 25921.2 cm-1
Scaled (by 0.908) Zero Point Vibrational Energy (zpe) 23536.5 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-pVDZ
ABC
0.88456 0.12639 0.11952

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.397 0.654 0.000
C2 -0.397 -0.654 0.000
N3 -0.397 1.869 0.000
N4 0.397 -1.869 0.000
H5 1.002 -1.891 0.804
H6 1.002 -1.891 -0.804
H7 -1.002 1.891 0.804
H8 -1.002 1.891 -0.804
H9 -1.055 -0.675 -0.875
H10 -1.055 -0.675 0.875
H11 1.055 0.675 -0.875
H12 1.055 0.675 0.875

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.52961.45152.52262.73612.73612.03302.03302.15382.15381.09481.0948
C21.52962.52261.45152.03302.03302.73612.73611.09481.09482.15382.1538
N31.45152.52263.82114.09104.09101.00661.00662.76962.76962.07312.0731
N42.52261.45153.82111.00661.00664.09104.09102.07312.07312.76962.7696
H52.73612.03304.09101.00661.60884.27914.57152.92002.38983.06692.5673
H62.73612.03304.09101.00661.60884.57154.27912.38982.92002.56733.0669
H72.03302.73611.00664.09104.27914.57151.60883.06692.56732.92002.3898
H82.03302.73611.00664.09104.57154.27911.60882.56733.06692.38982.9200
H92.15381.09482.76962.07312.92002.38983.06692.56731.74982.50473.0554
H102.15381.09482.76962.07312.38982.92002.56733.06691.74983.05542.5047
H111.09482.15382.07312.76963.06692.56732.92002.38982.50473.05541.7498
H121.09482.15382.07312.76962.56733.06692.38982.92003.05542.50471.7498

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 115.576 C1 C2 H9 109.186
C1 C2 H10 109.186 C1 N3 H7 110.283
C1 N3 H8 110.283 C2 C1 N3 115.576
C2 C1 H11 109.186 C2 C1 H12 109.186
C2 N4 H5 110.283 C2 N4 H6 110.283
N3 C1 H11 108.190 N3 C1 H12 108.190
N4 C2 H9 108.190 N4 C2 H10 108.190
H5 N4 H6 106.085 H7 N3 H8 106.085
H9 C2 H10 106.096 H11 C1 H12 106.096
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.068      
2 C 0.068      
3 N -0.284      
4 N -0.284      
5 H 0.087      
6 H 0.087      
7 H 0.087      
8 H 0.087      
9 H 0.021      
10 H 0.021      
11 H 0.021      
12 H 0.021      


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 -23.861 -4.617 0.000
y -4.617 -35.453 0.000
z 0.000 0.000 -23.382
Traceless
 xyz
x 5.556 -4.617 0.000
y -4.617 -11.832 0.000
z 0.000 0.000 6.275
Polar
3z2-r212.550
x2-y211.592
xy-4.617
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.252 -0.579 0.000
y -0.579 5.410 0.000
z 0.000 0.000 5.176


<r2> (average value of r2) Å2
<r2> 105.611
(<r2>)1/2 10.277