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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: B1B95/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-190.467945
Energy at 298.15K-190.478120
Nuclear repulsion energy131.978228
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 B1B95/6-311G**
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 3512 3372 0.00      
2 Ag 3024 2903 0.00      
3 Ag 1663 1596 0.00      
4 Ag 1476 1417 0.00      
5 Ag 1393 1337 0.00      
6 Ag 1128 1083 0.00      
7 Ag 1066 1023 0.00      
8 Ag 835 802 0.00      
9 Ag 454 436 0.00      
10 Au 3592 3448 0.00      
11 Au 3082 2959 79.04      
12 Au 1394 1338 2.61      
13 Au 1072 1030 0.18      
14 Au 754 724 0.54      
15 Au 262 251 104.83      
16 Au 145 139 0.08      
17 Bg 3592 3449 0.00      
18 Bg 3053 2931 0.00      
19 Bg 1370 1315 0.00      
20 Bg 1297 1245 0.00      
21 Bg 940 902 0.00      
22 Bg 302 290 0.00      
23 Bu 3511 3371 1.64      
24 Bu 3032 2911 97.68      
25 Bu 1662 1595 50.42      
26 Bu 1494 1434 1.16      
27 Bu 1320 1268 21.10      
28 Bu 1103 1059 17.96      
29 Bu 868 834 405.78      
30 Bu 257 247 19.73      

Unscaled Zero Point Vibrational Energy (zpe) 24326.2 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 23355.6 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 B1B95/6-311G**
ABC
0.88461 0.12545 0.11874

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.395 0.655 0.000
C2 -0.395 -0.655 0.000
N3 -0.395 1.877 0.000
N4 0.395 -1.877 0.000
H5 1.004 -1.896 0.811
H6 1.004 -1.896 -0.811
H7 -1.004 1.896 0.811
H8 -1.004 1.896 -0.811
H9 -1.055 -0.674 -0.874
H10 -1.055 -0.674 0.874
H11 1.055 0.674 -0.874
H12 1.055 0.674 0.874

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.53071.45522.53242.74492.74492.03772.03772.15272.15271.09541.0954
C21.53072.53241.45522.03772.03772.74492.74491.09541.09542.15272.1527
N31.45522.53243.83644.10444.10441.01361.01362.77572.77572.07762.0776
N42.53241.45523.83641.01361.01364.10444.10442.07762.07762.77572.7757
H52.74492.03774.10441.01361.62154.28964.58582.92752.39483.07282.5704
H62.74492.03774.10441.01361.62154.58584.28962.39482.92752.57043.0728
H72.03772.74491.01364.10444.28964.58581.62153.07282.57042.92752.3948
H82.03772.74491.01364.10444.58584.28961.62152.57043.07282.39482.9275
H92.15271.09542.77572.07762.92752.39483.07282.57041.74862.50343.0536
H102.15271.09542.77572.07762.39482.92752.57043.07281.74863.05362.5034
H111.09542.15272.07762.77573.07282.57042.92752.39482.50343.05361.7486
H121.09542.15272.07762.77572.57043.07282.39482.92753.05362.50341.7486

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 115.985 C1 C2 H9 108.984
C1 C2 H10 108.984 C1 N3 H7 109.960
C1 N3 H8 109.960 C2 C1 N3 115.985
C2 C1 H11 108.984 C2 C1 H12 108.984
C2 N4 H5 109.960 C2 N4 H6 109.960
N3 C1 H11 108.258 N3 C1 H12 108.258
N4 C2 H9 108.258 N4 C2 H10 108.258
H5 N4 H6 106.225 H7 N3 H8 106.225
H9 C2 H10 105.908 H11 C1 H12 105.908
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.162      
2 C -0.162      
3 N -0.458      
4 N -0.458      
5 H 0.193      
6 H 0.193      
7 H 0.193      
8 H 0.193      
9 H 0.118      
10 H 0.118      
11 H 0.118      
12 H 0.118      


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 -23.976 -4.786 0.000
y -4.786 -35.307 0.000
z 0.000 0.000 -23.355
Traceless
 xyz
x 5.355 -4.786 0.000
y -4.786 -11.641 0.000
z 0.000 0.000 6.286
Polar
3z2-r212.572
x2-y211.331
xy-4.786
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.830 -0.553 0.000
y -0.553 6.298 0.000
z 0.000 0.000 5.622


<r2> (average value of r2) Å2
<r2> 106.101
(<r2>)1/2 10.301