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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: PBEPBE/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at PBEPBE/6-31G**
 hartrees
Energy at 0K-190.274834
Energy at 298.15K-190.284991
Nuclear repulsion energy130.754178
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 PBEPBE/6-31G**
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 3388 3341 0.00      
2 Ag 2949 2908 0.00      
3 Ag 1625 1603 0.00      
4 Ag 1441 1421 0.00      
5 Ag 1354 1336 0.00      
6 Ag 1104 1089 0.00      
7 Ag 1025 1011 0.00      
8 Ag 834 822 0.00      
9 Ag 447 441 0.00      
10 Au 3474 3427 1.90      
11 Au 3011 2970 71.02      
12 Au 1364 1345 2.72      
13 Au 1051 1037 0.33      
14 Au 740 729 1.12      
15 Au 283 279 113.05      
16 Au 147 145 0.01      
17 Bg 3475 3428 0.00      
18 Bg 2985 2944 0.00      
19 Bg 1339 1321 0.00      
20 Bg 1267 1250 0.00      
21 Bg 924 911 0.00      
22 Bg 323 319 0.00      
23 Bu 3387 3340 5.87      
24 Bu 2958 2917 91.31      
25 Bu 1624 1601 36.58      
26 Bu 1459 1439 0.44      
27 Bu 1286 1269 25.98      
28 Bu 1075 1061 6.20      
29 Bu 868 856 392.50      
30 Bu 255 251 18.87      

Unscaled Zero Point Vibrational Energy (zpe) 23730.0 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 23404.9 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 PBEPBE/6-31G**
ABC
0.86936 0.12310 0.11652

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.397 0.663 0.000
C2 -0.397 -0.663 0.000
N3 -0.397 1.898 0.000
N4 0.397 -1.898 0.000
H5 1.021 -1.891 0.815
H6 1.021 -1.891 -0.815
H7 -1.021 1.891 0.815
H8 -1.021 1.891 -0.815
H9 -1.063 -0.683 -0.884
H10 -1.063 -0.683 0.884
H11 1.063 0.683 -0.884
H12 1.063 0.683 0.884

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.54481.46792.56102.75232.75232.04492.04492.17342.17341.10731.1073
C21.54482.56101.46792.04492.04492.75232.75231.10731.10732.17342.1734
N31.46792.56103.87824.12674.12671.02681.02682.80872.80872.09482.0948
N42.56101.46793.87821.02681.02684.12674.12672.09482.09482.80872.8087
H52.75232.04494.12671.02681.62994.29784.59642.94772.40993.08422.5751
H62.75232.04494.12671.02681.62994.59644.29782.40992.94772.57513.0842
H72.04492.75231.02684.12674.29784.59641.62993.08422.57512.94772.4099
H82.04492.75231.02684.12674.59644.29781.62992.57513.08422.40992.9477
H92.17341.10732.80872.09482.94772.40993.08422.57511.76772.52753.0843
H102.17341.10732.80872.09482.40992.94772.57513.08421.76773.08432.5275
H111.10732.17342.09482.80873.08422.57512.94772.40992.52753.08431.7677
H121.10732.17342.09482.80872.57513.08422.40992.94773.08432.52751.7677

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 116.411 C1 C2 H9 108.952
C1 C2 H10 108.952 C1 N3 H7 108.820
C1 N3 H8 108.820 C2 C1 N3 116.411
C2 C1 H11 108.952 C2 C1 H12 108.952
C2 N4 H5 108.820 C2 N4 H6 108.820
N3 C1 H11 108.053 N3 C1 H12 108.053
N4 C2 H9 108.053 N4 C2 H10 108.053
H5 N4 H6 105.061 H7 N3 H8 105.061
H9 C2 H10 105.922 H11 C1 H12 105.922
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.123      
2 C -0.123      
3 N -0.576      
4 N -0.576      
5 H 0.238      
6 H 0.238      
7 H 0.238      
8 H 0.238      
9 H 0.111      
10 H 0.111      
11 H 0.111      
12 H 0.111      


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 -23.576 -4.805 0.000
y -4.805 -35.541 0.000
z 0.000 0.000 -23.451
Traceless
 xyz
x 5.920 -4.805 0.000
y -4.805 -12.027 0.000
z 0.000 0.000 6.107
Polar
3z2-r212.214
x2-y211.965
xy-4.805
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.534 -0.748 0.000
y -0.748 6.077 0.000
z 0.000 0.000 5.503


<r2> (average value of r2) Å2
<r2> 107.632
(<r2>)1/2 10.375