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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-190.487932
Energy at 298.15K-190.498131
Nuclear repulsion energy131.609412
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 B3PW91/6-311G*
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 3500 3369 0.00      
2 Ag 3017 2905 0.00      
3 Ag 1718 1654 0.00      
4 Ag 1487 1431 0.00      
5 Ag 1403 1351 0.00      
6 Ag 1128 1086 0.00      
7 Ag 1062 1023 0.00      
8 Ag 848 817 0.00      
9 Ag 456 439 0.00      
10 Au 3579 3445 1.29      
11 Au 3074 2959 87.23      
12 Au 1414 1361 2.76      
13 Au 1086 1046 0.13      
14 Au 753 725 0.64      
15 Au 268 258 118.08      
16 Au 146 141 0.33      
17 Bg 3579 3446 0.00      
18 Bg 3045 2931 0.00      
19 Bg 1388 1336 0.00      
20 Bg 1311 1262 0.00      
21 Bg 950 914 0.00      
22 Bg 304 292 0.00      
23 Bu 3499 3369 5.60      
24 Bu 3025 2912 106.20      
25 Bu 1716 1652 64.06      
26 Bu 1505 1449 2.52      
27 Bu 1334 1284 21.20      
28 Bu 1100 1059 12.85      
29 Bu 886 853 459.29      
30 Bu 264 254 20.94      

Unscaled Zero Point Vibrational Energy (zpe) 24421.9 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 23511.0 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 B3PW91/6-311G*
ABC
0.88295 0.12448 0.11788

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.395 0.658 0.000
C2 -0.395 -0.658 0.000
N3 -0.395 1.884 0.000
N4 0.395 -1.884 0.000
H5 1.002 -1.908 0.813
H6 1.002 -1.908 -0.813
H7 -1.002 1.908 0.813
H8 -1.002 1.908 -0.813
H9 -1.057 -0.681 -0.875
H10 -1.057 -0.681 0.875
H11 1.057 0.681 -0.875
H12 1.057 0.681 0.875

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.53541.45832.54202.75982.75982.04352.04352.16092.16091.09771.0977
C21.53542.54201.45832.04352.04352.75982.75981.09771.09772.16092.1609
N31.45832.54203.84974.12234.12231.01491.01492.79012.79012.07872.0787
N42.54201.45833.84971.01491.01494.12234.12232.07872.07872.79012.7901
H52.75982.04354.12231.01491.62634.31074.60722.93192.39773.09192.5909
H62.75982.04354.12231.01491.62634.60724.31072.39772.93192.59093.0919
H72.04352.75981.01494.12234.31074.60721.62633.09192.59092.93192.3977
H82.04352.75981.01494.12234.60724.31071.62632.59093.09192.39772.9319
H92.16091.09772.79012.07872.93192.39773.09192.59091.75062.51533.0645
H102.16091.09772.79012.07872.39772.93192.59093.09191.75063.06452.5153
H111.09772.16092.07872.79013.09192.59092.93192.39772.51533.06451.7506
H121.09772.16092.07872.79012.59093.09192.39772.93193.06452.51531.7506

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 116.210 C1 C2 H9 109.175
C1 C2 H10 109.175 C1 N3 H7 110.136
C1 N3 H8 110.136 C2 C1 N3 116.210
C2 C1 H11 109.175 C2 C1 H12 109.175
C2 N4 H5 110.136 C2 N4 H6 110.136
N3 C1 H11 108.005 N3 C1 H12 108.005
N4 C2 H9 108.005 N4 C2 H10 108.005
H5 N4 H6 106.487 H7 N3 H8 106.487
H9 C2 H10 105.768 H11 C1 H12 105.768
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.306      
2 C -0.306      
3 N -0.738      
4 N -0.738      
5 H 0.316      
6 H 0.316      
7 H 0.316      
8 H 0.316      
9 H 0.207      
10 H 0.207      
11 H 0.207      
12 H 0.207      


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 -23.961 -5.193 0.000
y -5.193 -36.077 0.000
z 0.000 0.000 -23.176
Traceless
 xyz
x 5.666 -5.193 0.000
y -5.193 -12.509 0.000
z 0.000 0.000 6.843
Polar
3z2-r213.686
x2-y212.117
xy-5.193
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.696 -0.550 0.000
y -0.550 6.159 0.000
z 0.000 0.000 5.523


<r2> (average value of r2) Å2
<r2> 106.889
(<r2>)1/2 10.339