return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: PBEPBE/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-190.272632
Energy at 298.15K-190.282839
Nuclear repulsion energy130.632585
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/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 3350 3330 0.00      
2 Ag 2932 2915 0.00      
3 Ag 1601 1592 0.00      
4 Ag 1402 1394 0.00      
5 Ag 1334 1327 0.00      
6 Ag 1106 1100 0.00      
7 Ag 1034 1028 0.00      
8 Ag 846 842 0.00      
9 Ag 448 446 0.00      
10 Au 3426 3406 2.37      
11 Au 2993 2976 72.43      
12 Au 1351 1344 3.96      
13 Au 1047 1041 0.17      
14 Au 741 737 1.21      
15 Au 290 288 90.64      
16 Au 149 148 0.10      
17 Bg 3427 3407 0.00      
18 Bg 2966 2949 0.00      
19 Bg 1326 1319 0.00      
20 Bg 1253 1246 0.00      
21 Bg 921 916 0.00      
22 Bg 330 328 0.00      
23 Bu 3349 3329 8.15      
24 Bu 2939 2922 96.83      
25 Bu 1600 1590 28.49      
26 Bu 1421 1412 0.37      
27 Bu 1268 1260 31.14      
28 Bu 1079 1073 7.44      
29 Bu 885 880 333.16      
30 Bu 258 257 16.25      

Unscaled Zero Point Vibrational Energy (zpe) 23536.8 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 23400.3 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 PBEPBE/cc-pVDZ
ABC
0.86581 0.12321 0.11658

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.395 0.663 0.000
C2 -0.395 -0.663 0.000
N3 -0.395 1.899 0.000
N4 0.395 -1.899 0.000
H5 1.031 -1.879 0.813
H6 1.031 -1.879 -0.813
H7 -1.031 1.879 0.813
H8 -1.031 1.879 -0.813
H9 -1.068 -0.681 -0.888
H10 -1.068 -0.681 0.888
H11 1.068 0.681 -0.888
H12 1.068 0.681 0.888

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.54271.46712.56122.74352.74352.04322.04322.17572.17571.11441.1144
C21.54272.56121.46712.04322.04322.74352.74351.11441.11442.17572.1757
N31.46712.56123.87874.11924.11921.03251.03252.81012.81012.10042.1004
N42.56121.46713.87871.03251.03254.11924.11922.10042.10042.81012.8101
H52.74352.04324.11921.03251.62694.28684.58512.95552.41773.07452.5617
H62.74352.04324.11921.03251.62694.58514.28682.41772.95552.56173.0745
H72.04322.74351.03254.11924.28684.58511.62693.07452.56172.95552.4177
H82.04322.74351.03254.11924.58514.28681.62692.56173.07452.41772.9555
H92.17571.11442.81012.10042.95552.41773.07452.56171.77632.53313.0938
H102.17571.11442.81012.10042.41772.95552.56173.07451.77633.09382.5331
H111.11442.17572.10042.81013.07452.56172.95552.41772.53313.09381.7763
H121.11442.17572.10042.81012.56173.07452.41772.95553.09382.53311.7763

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 116.613 C1 C2 H9 108.874
C1 C2 H10 108.874 C1 N3 H7 108.404
C1 N3 H8 108.404 C2 C1 N3 116.613
C2 C1 H11 108.874 C2 C1 H12 108.874
C2 N4 H5 108.404 C2 N4 H6 108.404
N3 C1 H11 108.128 N3 C1 H12 108.128
N4 C2 H9 108.128 N4 C2 H10 108.128
H5 N4 H6 103.969 H7 N3 H8 103.969
H9 C2 H10 105.683 H11 C1 H12 105.683
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.022      
2 C -0.022      
3 N -0.170      
4 N -0.170      
5 H 0.075      
6 H 0.075      
7 H 0.075      
8 H 0.075      
9 H 0.021      
10 H 0.021      
11 H 0.021      
12 H 0.021      


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 -24.021 -4.458 0.000
y -4.458 -34.568 0.000
z 0.000 0.000 -23.812
Traceless
 xyz
x 5.169 -4.458 0.000
y -4.458 -10.651 0.000
z 0.000 0.000 5.482
Polar
3z2-r210.964
x2-y210.547
xy-4.458
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.927 -0.648 0.000
y -0.648 6.313 0.000
z 0.000 0.000 5.678


<r2> (average value of r2) Å2
<r2> 107.546
(<r2>)1/2 10.370