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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: PBEPBE/cc-pVTZ

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-pVTZ
 hartrees
Energy at 0K-190.341783
Energy at 298.15K-190.351839
Nuclear repulsion energy130.992609
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-pVTZ
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 3390 3366 0.00      
2 Ag 2935 2915 0.00      
3 Ag 1609 1598 0.00      
4 Ag 1426 1416 0.00      
5 Ag 1336 1327 0.00      
6 Ag 1087 1079 0.00      
7 Ag 1019 1012 0.00      
8 Ag 809 803 0.00      
9 Ag 441 438 0.00      
10 Au 3467 3443 0.16      
11 Au 2991 2970 66.61      
12 Au 1350 1341 1.98      
13 Au 1043 1036 0.12      
14 Au 734 729 1.01      
15 Au 251 249 88.86      
16 Au 141 140 0.04      
17 Bg 3468 3444 0.00      
18 Bg 2961 2941 0.00      
19 Bg 1328 1319 0.00      
20 Bg 1258 1249 0.00      
21 Bg 914 907 0.00      
22 Bg 286 284 0.00      
23 Bu 3389 3365 5.28      
24 Bu 2945 2924 90.41      
25 Bu 1608 1597 38.09      
26 Bu 1445 1435 0.79      
27 Bu 1278 1270 17.58      
28 Bu 1058 1051 11.25      
29 Bu 844 838 374.42      
30 Bu 254 252 17.49      

Unscaled Zero Point Vibrational Energy (zpe) 23532.0 cm-1
Scaled (by 0.9931) Zero Point Vibrational Energy (zpe) 23369.6 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 PBEPBE/cc-pVTZ
ABC
0.87473 0.12341 0.11687

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.396 0.661 0.000
C2 -0.396 -0.661 0.000
N3 -0.396 1.894 0.000
N4 0.396 -1.894 0.000
H5 1.013 -1.907 0.815
H6 1.013 -1.907 -0.815
H7 -1.013 1.907 0.815
H8 -1.013 1.907 -0.815
H9 -1.060 -0.679 0.881
H10 -1.060 -0.679 -0.881
H11 1.060 0.679 0.881
H12 1.060 0.679 -0.881

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.54041.46582.55442.76342.76342.05042.05042.16602.16601.10381.1038
C21.54042.55441.46582.05042.05042.76342.76341.10381.10382.16602.1660
N31.46582.55443.86974.13474.13471.02271.02272.79922.79922.09162.0916
N42.55441.46583.86971.02271.02274.13474.13472.09162.09162.79922.7992
H52.76342.05044.13471.02271.63104.31844.61612.41092.94742.58663.0928
H62.76342.05044.13471.02271.63104.61614.31842.94742.41093.09282.5866
H72.05042.76341.02274.13474.31844.61611.63102.58663.09282.41092.9474
H82.05042.76341.02274.13474.61614.31841.63103.09282.58662.94742.4109
H92.16601.10382.79922.09162.41092.94742.58663.09281.76262.51793.0735
H102.16601.10382.79922.09162.94742.41093.09282.58661.76263.07352.5179
H111.10382.16602.09162.79922.58663.09282.41092.94742.51793.07351.7626
H121.10382.16602.09162.79923.09282.58662.94742.41093.07352.51791.7626

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 116.339 C1 C2 H9 108.879
C1 C2 H10 108.879 C1 N3 H7 109.673
C1 N3 H8 109.673 C2 C1 N3 116.339
C2 C1 H11 108.879 C2 C1 H12 108.879
C2 N4 H5 109.673 C2 N4 H6 109.673
N3 C1 H11 108.148 N3 C1 H12 108.148
N4 C2 H9 108.148 N4 C2 H10 108.148
H5 N4 H6 105.757 H7 N3 H8 105.757
H9 C2 H10 105.961 H11 C1 H12 105.961
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.105      
2 C -0.105      
3 N -0.285      
4 N -0.285      
5 H 0.121      
6 H 0.121      
7 H 0.121      
8 H 0.121      
9 H 0.075      
10 H 0.075      
11 H 0.075      
12 H 0.075      


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 -24.634 -4.513 0.000
y -4.513 -35.246 0.000
z 0.000 0.000 -23.782
Traceless
 xyz
x 4.880 -4.513 0.000
y -4.513 -11.038 0.000
z 0.000 0.000 6.158
Polar
3z2-r212.316
x2-y210.612
xy-4.513
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.590 -0.539 0.000
y -0.539 7.307 0.000
z 0.000 0.000 6.143


<r2> (average value of r2) Å2
<r2> 107.699
(<r2>)1/2 10.378