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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: HF/6-311G*

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/6-311G*
 hartrees
Energy at 0K-189.309336
Energy at 298.15K-189.319788
Nuclear repulsion energy132.445205
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/6-311G*
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 3737 3380 0.00      
2 Ag 3176 2873 0.00      
3 Ag 1857 1679 0.00      
4 Ag 1619 1464 0.00      
5 Ag 1546 1398 0.00      
6 Ag 1195 1080 0.00      
7 Ag 1152 1042 0.00      
8 Ag 926 838 0.00      
9 Ag 492 445 0.00      
10 Au 3810 3446 0.24      
11 Au 3225 2916 128.21      
12 Au 1526 1380 1.13      
13 Au 1158 1047 0.31      
14 Au 808 731 0.02      
15 Au 280 253 122.12      
16 Au 156 141 0.76      
17 Bg 3810 3446 0.00      
18 Bg 3193 2888 0.00      
19 Bg 1498 1355 0.00      
20 Bg 1417 1281 0.00      
21 Bg 1020 922 0.00      
22 Bg 308 279 0.00      
23 Bu 3737 3380 1.89      
24 Bu 3180 2876 132.17      
25 Bu 1855 1678 70.63      
26 Bu 1635 1479 0.87      
27 Bu 1454 1315 36.65      
28 Bu 1159 1048 27.37      
29 Bu 974 881 467.73      
30 Bu 300 271 20.81      

Unscaled Zero Point Vibrational Energy (zpe) 26100.1 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 23605.0 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/6-311G*
ABC
0.89040 0.12603 0.11923

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.398 0.654 0.000
C2 -0.398 -0.654 0.000
N3 -0.398 1.870 0.000
N4 0.398 -1.870 0.000
H5 0.990 -1.909 0.804
H6 0.990 -1.909 -0.804
H7 -0.990 1.909 0.804
H8 -0.990 1.909 -0.804
H9 -1.050 -0.679 -0.869
H10 -1.050 -0.679 0.869
H11 1.050 0.679 -0.869
H12 1.050 0.679 0.869

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.53111.45352.52382.75092.75092.03702.03702.15162.15161.08691.0869
C21.53112.52381.45352.03702.03702.75092.75091.08691.08692.15162.1516
N31.45352.52383.82374.10574.10570.99920.99922.77082.77082.06682.0668
N42.52381.45353.82370.99920.99924.10574.10572.06682.06682.77082.7708
H52.75092.03704.10570.99921.60824.30164.59232.91142.38353.08262.5898
H62.75092.03704.10570.99921.60824.59234.30162.38352.91142.58983.0826
H72.03702.75090.99924.10574.30164.59231.60823.08262.58982.91142.3835
H82.03702.75090.99924.10574.59234.30161.60822.58983.08262.38352.9114
H92.15161.08692.77082.06682.91142.38353.08262.58981.73812.50133.0459
H102.15161.08692.77082.06682.38352.91142.58983.08261.73813.04592.5013
H111.08692.15162.06682.77083.08262.58982.91142.38352.50133.04591.7381
H121.08692.15162.06682.77082.58983.08262.38352.91143.04592.50131.7381

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 115.455 C1 C2 H9 109.373
C1 C2 H10 109.373 C1 N3 H7 110.947
C1 N3 H8 110.947 C2 C1 N3 115.455
C2 C1 H11 109.373 C2 C1 H12 109.373
C2 N4 H5 110.947 C2 N4 H6 110.947
N3 C1 H11 108.028 N3 C1 H12 108.028
N4 C2 H9 108.028 N4 C2 H10 108.028
H5 N4 H6 107.169 H7 N3 H8 107.169
H9 C2 H10 106.177 H11 C1 H12 106.177
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.221      
2 C -0.221      
3 N -0.815      
4 N -0.815      
5 H 0.325      
6 H 0.325      
7 H 0.325      
8 H 0.325      
9 H 0.193      
10 H 0.193      
11 H 0.193      
12 H 0.193      


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 -24.039 -5.112 0.000
y -5.112 -36.561 0.000
z 0.000 0.000 -23.201
Traceless
 xyz
x 5.843 -5.112 0.000
y -5.112 -12.941 0.000
z 0.000 0.000 7.098
Polar
3z2-r214.197
x2-y212.522
xy-5.112
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.251 -0.532 0.000
y -0.532 5.489 0.000
z 0.000 0.000 5.214


<r2> (average value of r2) Å2
<r2> 106.059
(<r2>)1/2 10.299