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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: HF/STO-3G

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/STO-3G
 hartrees
Energy at 0K-186.924796
Energy at 298.15K-186.935074
Nuclear repulsion energy130.430602
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/STO-3G
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 3898 3183 0.00      
2 Ag 3592 2933 0.00      
3 Ag 2026 1654 0.00      
4 Ag 1804 1473 0.00      
5 Ag 1701 1389 0.00      
6 Ag 1331 1087 0.00      
7 Ag 1250 1020 0.00      
8 Ag 1055 862 0.00      
9 Ag 504 412 0.00      
10 Au 4083 3334 8.78      
11 Au 3717 3035 3.94      
12 Au 1643 1341 2.46      
13 Au 1266 1033 2.82      
14 Au 875 714 0.48      
15 Au 296 242 119.32      
16 Au 121 98 0.37      
17 Bg 4083 3334 0.00      
18 Bg 3705 3025 0.00      
19 Bg 1624 1326 0.00      
20 Bg 1536 1254 0.00      
21 Bg 1085 886 0.00      
22 Bg 325 265 0.00      
23 Bu 3897 3182 8.51      
24 Bu 3595 2936 9.64      
25 Bu 2025 1653 11.73      
26 Bu 1820 1486 0.30      
27 Bu 1566 1279 47.19      
28 Bu 1295 1058 7.13      
29 Bu 1128 921 207.22      
30 Bu 310 253 17.52      

Unscaled Zero Point Vibrational Energy (zpe) 28578.5 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 23334.3 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 HF/STO-3G
ABC
0.84913 0.12330 0.11630

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.411 0.662 0.000
C2 -0.411 -0.662 0.000
N3 -0.411 1.900 0.000
N4 0.411 -1.900 0.000
H5 1.042 -1.853 0.817
H6 1.042 -1.853 -0.817
H7 -1.042 1.853 0.817
H8 -1.042 1.853 -0.817
H9 -1.056 -0.685 0.880
H10 -1.056 -0.685 -0.880
H11 1.056 0.685 0.880
H12 1.056 0.685 -0.880

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.55741.48592.56142.71832.71832.04872.04872.17642.17641.09131.0913
C21.55742.56141.48592.04872.04872.71832.71831.09131.09132.17642.1764
N31.48592.56143.88744.10624.10621.03351.03352.80532.80532.09792.0979
N42.56141.48593.88741.03351.03354.10624.10622.09792.09792.80532.8053
H52.71832.04874.10621.03351.63364.25184.55492.40202.94022.53843.0526
H62.71832.04874.10621.03351.63364.55494.25182.94022.40203.05262.5384
H72.04872.71831.03354.10624.25184.55491.63362.53843.05262.40202.9402
H82.04872.71831.03354.10624.55494.25181.63363.05262.53842.94022.4020
H92.17641.09132.80532.09792.40202.94022.53843.05261.76012.51633.0708
H102.17641.09132.80532.09792.94022.40203.05262.53841.76013.07082.5163
H111.09132.17642.09792.80532.53843.05262.40202.94022.51633.07081.7601
H121.09132.17642.09792.80533.05262.53842.94022.40203.07082.51631.7601

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 114.614 C1 C2 H9 109.242
C1 C2 H10 109.242 C1 N3 H7 107.455
C1 N3 H8 107.455 C2 C1 N3 114.614
C2 C1 H11 109.242 C2 C1 H12 109.242
C2 N4 H5 107.455 C2 N4 H6 107.455
N3 C1 H11 108.006 N3 C1 H12 108.006
N4 C2 H9 108.006 N4 C2 H10 108.006
H5 N4 H6 104.433 H7 N3 H8 104.433
H9 C2 H10 107.495 H11 C1 H12 107.495
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.032      
2 C -0.032      
3 N -0.377      
4 N -0.377      
5 H 0.146      
6 H 0.146      
7 H 0.146      
8 H 0.146      
9 H 0.059      
10 H 0.059      
11 H 0.059      
12 H 0.059      


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 -21.896 -3.812 0.000
y -3.812 -35.304 0.000
z 0.000 0.000 -22.596
Traceless
 xyz
x 7.053 -3.812 0.000
y -3.812 -13.058 0.000
z 0.000 0.000 6.004
Polar
3z2-r212.009
x2-y213.407
xy-3.812
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.813 -0.672 0.000
y -0.672 2.545 0.000
z 0.000 0.000 3.032


<r2> (average value of r2) Å2
<r2> 106.957
(<r2>)1/2 10.342