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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: B3LYP/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 B3LYP/3-21G*
 hartrees
Energy at 0K-189.459909
Energy at 298.15K-189.469964
Nuclear repulsion energy130.203443
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 B3LYP/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 3396 3267 0.00      
2 Ag 3032 2917 0.00      
3 Ag 1723 1657 0.00      
4 Ag 1531 1473 0.00      
5 Ag 1402 1348 0.00      
6 Ag 1092 1051 0.00      
7 Ag 986 949 0.00      
8 Ag 688 662 0.00      
9 Ag 451 433 0.00      
10 Au 3492 3359 2.77      
11 Au 3093 2976 66.54      
12 Au 1408 1355 3.51      
13 Au 1097 1055 0.12      
14 Au 760 731 1.45      
15 Au 277 266 133.11      
16 Au 149 143 0.41      
17 Bg 3492 3359 0.00      
18 Bg 3063 2946 0.00      
19 Bg 1393 1340 0.00      
20 Bg 1323 1273 0.00      
21 Bg 947 911 0.00      
22 Bg 305 293 0.00      
23 Bu 3396 3267 4.97      
24 Bu 3041 2925 80.80      
25 Bu 1723 1657 36.56      
26 Bu 1550 1491 1.70      
27 Bu 1348 1297 5.63      
28 Bu 1065 1025 8.98      
29 Bu 699 672 541.62      
30 Bu 257 247 21.35      

Unscaled Zero Point Vibrational Energy (zpe) 24087.6 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 23172.3 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 B3LYP/3-21G*
ABC
0.86331 0.12181 0.11548

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.406 0.662 0.000
C2 -0.406 -0.662 0.000
N3 -0.406 1.898 0.000
N4 0.406 -1.898 0.000
H5 0.993 -1.969 0.837
H6 0.993 -1.969 -0.837
H7 -0.993 1.969 0.837
H8 -0.993 1.969 -0.837
H9 -1.057 -0.679 -0.883
H10 -1.057 -0.679 0.883
H11 1.057 0.679 -0.883
H12 1.057 0.679 0.883

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.55381.47932.56032.82232.82232.08952.08952.17312.17311.09741.0974
C21.55382.56031.47932.08952.08952.82232.82231.09741.09742.17312.1731
N31.47932.56033.88234.19664.19661.02431.02432.80142.80142.09952.0995
N42.56031.47933.88231.02431.02434.19664.19662.09952.09952.80142.8014
H52.82232.08954.19661.02431.67304.41014.71682.97082.42273.15822.6492
H62.82232.08954.19661.02431.67304.71684.41012.42272.97082.64923.1582
H72.08952.82231.02434.19664.41014.71681.67303.15822.64922.97082.4227
H82.08952.82231.02434.19664.71684.41011.67302.64923.15822.42272.9708
H92.17311.09742.80142.09952.97082.42273.15822.64921.76702.51343.0723
H102.17311.09742.80142.09952.42272.97082.64923.15821.76703.07232.5134
H111.09742.17312.09952.80143.15822.64922.97082.42272.51343.07231.7670
H121.09742.17312.09952.80142.64923.15822.42272.97083.07232.51341.7670

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 115.129 C1 C2 H9 108.882
C1 C2 H10 108.882 C1 N3 H7 111.861
C1 N3 H8 111.861 C2 C1 N3 115.129
C2 C1 H11 108.882 C2 C1 H12 108.882
C2 N4 H5 111.861 C2 N4 H6 111.861
N3 C1 H11 108.221 N3 C1 H12 108.221
N4 C2 H9 108.221 N4 C2 H10 108.221
H5 N4 H6 109.500 H7 N3 H8 109.500
H9 C2 H10 107.229 H11 C1 H12 107.229
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.244      
2 C -0.244      
3 N -0.653      
4 N -0.653      
5 H 0.260      
6 H 0.260      
7 H 0.260      
8 H 0.260      
9 H 0.188      
10 H 0.188      
11 H 0.188      
12 H 0.188      


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 -23.351 -5.467 0.000
y -5.467 -35.198 0.000
z 0.000 0.000 -23.037
Traceless
 xyz
x 5.767 -5.467 0.000
y -5.467 -12.004 0.000
z 0.000 0.000 6.237
Polar
3z2-r212.474
x2-y211.847
xy-5.467
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.675 -0.893 0.000
y -0.893 5.067 0.000
z 0.000 0.000 4.984


<r2> (average value of r2) Å2
<r2> 108.643
(<r2>)1/2 10.423