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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: B3PW91/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B3PW91/6-31G
 hartrees
Energy at 0K-190.387332
Energy at 298.15K-190.397202
Nuclear repulsion energy131.012369
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 B3PW91/6-31G
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 3582 3431 0.00      
2 Ag 3032 2904 0.00      
3 Ag 1710 1638 0.00      
4 Ag 1519 1454 0.00      
5 Ag 1417 1357 0.00      
6 Ag 1139 1091 0.00      
7 Ag 1035 992 0.00      
8 Ag 552 529 0.00      
9 Ag 463 443 0.00      
10 Au 3703 3547 2.98      
11 Au 3102 2971 86.93      
12 Au 1392 1333 0.06      
13 Au 1070 1024 1.09      
14 Au 762 730 2.48      
15 Au 251 240 115.41      
16 Au 145 139 0.00      
17 Bg 3704 3547 0.00      
18 Bg 3071 2941 0.00      
19 Bg 1380 1322 0.00      
20 Bg 1307 1251 0.00      
21 Bg 938 898 0.00      
22 Bg 279 268 0.00      
23 Bu 3582 3430 0.49      
24 Bu 3041 2912 110.55      
25 Bu 1711 1639 64.29      
26 Bu 1535 1470 2.71      
27 Bu 1359 1301 6.51      
28 Bu 1124 1076 43.50      
29 Bu 557 533 726.94      
30 Bu 268 256 32.75      

Unscaled Zero Point Vibrational Energy (zpe) 24364.2 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 23333.6 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 B3PW91/6-31G
ABC
0.88791 0.12262 0.11664

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.400 0.662 0.000
C2 -0.400 -0.662 0.000
N3 -0.400 1.877 0.000
N4 0.400 -1.877 0.000
H5 0.926 -2.062 0.843
H6 0.926 -2.062 -0.843
H7 -0.926 2.062 0.843
H8 -0.926 2.062 -0.843
H9 -1.061 -0.678 -0.878
H10 -1.061 -0.678 0.878
H11 1.061 0.678 -0.878
H12 1.061 0.678 0.878

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.54641.45512.53932.89912.89912.10432.10432.16772.16771.09911.0991
C21.54642.53931.45512.10432.10432.89912.89911.09911.09912.16772.1677
N31.45512.53933.83924.24104.24101.01051.01052.78182.78182.08392.0839
N42.53931.45513.83921.01051.01054.24104.24102.08392.08392.78182.7818
H52.89912.10434.24101.01051.68504.52054.82442.97042.42163.23802.7432
H62.89912.10434.24101.01051.68504.82444.52052.42162.97042.74323.2380
H72.10432.89911.01054.24104.52054.82441.68503.23802.74322.97042.4216
H82.10432.89911.01054.24104.82444.52051.68502.74323.23802.42162.9704
H92.16771.09912.78182.08392.97042.42163.23802.74321.75622.51773.0696
H102.16771.09912.78182.08392.42162.97042.74323.23801.75623.06962.5177
H111.09912.16772.08392.78183.23802.74322.97042.42162.51773.06961.7562
H121.09912.16772.08392.78182.74323.23802.42162.97043.06962.51771.7562

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 115.531 C1 C2 H9 108.873
C1 C2 H10 108.873 C1 N3 H7 116.020
C1 N3 H8 116.020 C2 C1 N3 115.531
C2 C1 H11 108.873 C2 C1 H12 108.873
C2 N4 H5 116.020 C2 N4 H6 116.020
N3 C1 H11 108.550 N3 C1 H12 108.550
N4 C2 H9 108.550 N4 C2 H10 108.550
H5 N4 H6 112.978 H7 N3 H8 112.978
H9 C2 H10 106.051 H11 C1 H12 106.051
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.169      
2 C -0.169      
3 N -0.737      
4 N -0.737      
5 H 0.299      
6 H 0.299      
7 H 0.299      
8 H 0.299      
9 H 0.154      
10 H 0.154      
11 H 0.154      
12 H 0.154      


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 -24.166 -6.064 0.000
y -6.064 -33.008 0.000
z 0.000 0.000 -22.591
Traceless
 xyz
x 3.634 -6.064 0.000
y -6.064 -9.629 0.000
z 0.000 0.000 5.996
Polar
3z2-r211.992
x2-y28.842
xy-6.064
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.799 -0.832 0.000
y -0.832 5.480 0.000
z 0.000 0.000 5.152


<r2> (average value of r2) Å2
<r2> 108.053
(<r2>)1/2 10.395