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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: B1B95/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 B1B95/STO-3G
 hartrees
Energy at 0K-188.015109
Energy at 298.15K-188.025113
Nuclear repulsion energy128.883207
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 B1B95/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 3509 3098 0.00      
2 Ag 3341 2950 0.00      
3 Ag 1864 1646 0.00      
4 Ag 1644 1451 0.00      
5 Ag 1508 1332 0.00      
6 Ag 1249 1103 0.00      
7 Ag 1099 970 0.00      
8 Ag 945 834 0.00      
9 Ag 451 399 0.00      
10 Au 3694 3261 23.97      
11 Au 3465 3060 3.07      
12 Au 1520 1342 3.99      
13 Au 1173 1036 2.75      
14 Au 804 710 2.75      
15 Au 299 264 118.80      
16 Au 113 100 0.04      
17 Bg 3694 3261 0.00      
18 Bg 3450 3046 0.00      
19 Bg 1503 1327 0.00      
20 Bg 1409 1244 0.00      
21 Bg 997 880 0.00      
22 Bg 335 295 0.00      
23 Bu 3507 3097 25.05      
24 Bu 3349 2957 9.33      
25 Bu 1863 1645 12.30      
26 Bu 1662 1467 1.49      
27 Bu 1417 1251 22.67      
28 Bu 1204 1063 24.41      
29 Bu 1000 883 163.82      
30 Bu 268 237 18.02      

Unscaled Zero Point Vibrational Energy (zpe) 26165.7 cm-1
Scaled (by 0.883) Zero Point Vibrational Energy (zpe) 23104.3 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 B1B95/STO-3G
ABC
0.83543 0.12021 0.11347

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/STO-3G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.409 0.669 0.000
C2 -0.409 -0.669 0.000
N3 -0.409 1.933 0.000
N4 0.409 -1.933 0.000
H5 1.069 -1.826 0.822
H6 1.069 -1.826 -0.822
H7 -1.069 1.826 0.822
H8 -1.069 1.826 -0.822
H9 -1.061 -0.693 -0.891
H10 -1.061 -0.693 0.891
H11 1.061 0.693 -0.891
H12 1.061 0.693 0.891

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.56781.50612.60112.70752.70752.04912.04912.19322.19321.10431.1043
C21.56782.60111.50612.04912.04912.70752.70751.10431.10432.19322.1932
N31.50612.60113.95104.12124.12121.05891.05892.84812.84812.12002.1200
N42.60111.50613.95101.05891.05894.12124.12122.12002.12002.84812.8481
H52.70752.04914.12121.05891.64364.23074.53872.95862.41343.04572.5194
H62.70752.04914.12121.05891.64364.53874.23072.41342.95862.51943.0457
H72.04912.70751.05894.12124.23074.53871.64363.04572.51942.95862.4134
H82.04912.70751.05894.12124.53874.23071.64362.51943.04572.41342.9586
H92.19321.10432.84812.12002.95862.41343.04572.51941.78212.53483.0986
H102.19321.10432.84812.12002.41342.95862.51943.04571.78213.09862.5348
H111.10432.19322.12002.84813.04572.51942.95862.41342.53483.09861.7821
H121.10432.19322.12002.84812.51943.04572.41342.95863.09862.53481.7821

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 115.583 C1 C2 H9 109.088
C1 C2 H10 109.088 C1 N3 H7 104.691
C1 N3 H8 104.691 C2 C1 N3 115.583
C2 C1 H11 109.088 C2 C1 H12 109.088
C2 N4 H5 104.691 C2 N4 H6 104.691
N3 C1 H11 107.607 N3 C1 H12 107.607
N4 C2 H9 107.607 N4 C2 H10 107.607
H5 N4 H6 101.807 H7 N3 H8 101.807
H9 C2 H10 107.583 H11 C1 H12 107.583
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.087      
2 C -0.087      
3 N -0.369      
4 N -0.369      
5 H 0.152      
6 H 0.152      
7 H 0.152      
8 H 0.152      
9 H 0.075      
10 H 0.075      
11 H 0.075      
12 H 0.075      


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 -21.403 -3.790 0.000
y -3.790 -35.536 0.000
z 0.000 0.000 -22.365
Traceless
 xyz
x 7.548 -3.790 0.000
y -3.790 -13.653 0.000
z 0.000 0.000 6.105
Polar
3z2-r212.210
x2-y214.134
xy-3.790
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.952 -0.725 0.000
y -0.725 2.934 0.000
z 0.000 0.000 3.092


<r2> (average value of r2) Å2
<r2> 108.724
(<r2>)1/2 10.427