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: B97D3/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B97D3/TZVP
 hartrees
Energy at 0K-190.475213
Energy at 298.15K-190.485335
HF Energy-190.475213
Nuclear repulsion energy131.057059
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 B97D3/TZVP
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 3418 3369 0.00      
2 Ag 2955 2912 0.00      
3 Ag 1641 1618 0.00      
4 Ag 1452 1431 0.00      
5 Ag 1371 1351 0.00      
6 Ag 1080 1064 0.00      
7 Ag 1009 995 0.00      
8 Ag 807 795 0.00      
9 Ag 448 441 0.00      
10 Au 3503 3452 0.45      
11 Au 3013 2970 83.79      
12 Au 1375 1355 1.61      
13 Au 1066 1050 0.23      
14 Au 751 740 0.26      
15 Au 264 260 106.49      
16 Au 141 139 0.11      
17 Bg 3503 3453 0.00      
18 Bg 2984 2941 0.00      
19 Bg 1352 1333 0.00      
20 Bg 1280 1262 0.00      
21 Bg 934 920 0.00      
22 Bg 299 295 0.00      
23 Bu 3418 3369 4.48      
24 Bu 2964 2922 103.89      
25 Bu 1641 1617 47.99      
26 Bu 1470 1449 0.77      
27 Bu 1312 1293 21.48      
28 Bu 1047 1032 12.76      
29 Bu 842 829 400.06      
30 Bu 265 261 20.10      

Unscaled Zero Point Vibrational Energy (zpe) 23801.0 cm-1
Scaled (by 0.9856) Zero Point Vibrational Energy (zpe) 23458.3 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 B97D3/TZVP
ABC
0.87541 0.12340 0.11685

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/TZVP

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.398 0.660 0.000
C2 -0.398 -0.660 0.000
N3 -0.398 1.892 0.000
N4 0.398 -1.892 0.000
H5 1.007 -1.915 0.816
H6 1.007 -1.915 -0.816
H7 -1.007 1.915 0.816
H8 -1.007 1.915 -0.816
H9 -1.058 -0.680 -0.880
H10 -1.058 -0.680 0.880
H11 1.058 0.680 -0.880
H12 1.058 0.680 0.880

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.54221.46722.55272.76942.76942.05322.05322.16582.16581.09971.0997
C21.54222.55271.46722.05322.05322.76942.76941.09971.09972.16582.1658
N31.46722.55273.86784.14004.14001.01801.01802.79742.79742.08932.0893
N42.55271.46723.86781.01801.01804.14004.14002.08932.08932.79742.7974
H52.76942.05324.14001.01801.63134.32794.62512.94372.40753.10012.5964
H62.76942.05324.14001.01801.63134.62514.32792.40752.94372.59643.1001
H72.05322.76941.01804.14004.32794.62511.63133.10012.59642.94372.4075
H82.05322.76941.01804.14004.62514.32791.63132.59643.10012.40752.9437
H92.16581.09972.79742.08932.94372.40753.10012.59641.75902.51553.0695
H102.16581.09972.79742.08932.40752.94372.59643.10011.75903.06952.5155
H111.09972.16582.08932.79743.10012.59642.94372.40752.51553.06951.7590
H121.09972.16582.08932.79742.59643.10012.40752.94373.06952.51551.7590

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 116.018 C1 C2 H9 108.975
C1 C2 H10 108.975 C1 N3 H7 110.093
C1 N3 H8 110.093 C2 C1 N3 116.018
C2 C1 H11 108.975 C2 C1 H12 108.975
C2 N4 H5 110.093 C2 N4 H6 110.093
N3 C1 H11 108.111 N3 C1 H12 108.111
N4 C2 H9 108.111 N4 C2 H10 108.111
H5 N4 H6 106.487 H7 N3 H8 106.487
H9 C2 H10 106.215 H11 C1 H12 106.215
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.190      
2 C -0.190      
3 N -0.380      
4 N -0.380      
5 H 0.187      
6 H 0.187      
7 H 0.187      
8 H 0.187      
9 H 0.098      
10 H 0.098      
11 H 0.098      
12 H 0.098      


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 -24.482 -4.962 0.000
y -4.962 -36.285 0.000
z 0.000 0.000 -23.545
Traceless
 xyz
x 5.433 -4.962 0.000
y -4.962 -12.271 0.000
z 0.000 0.000 6.838
Polar
3z2-r213.676
x2-y211.803
xy-4.962
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.349 -0.491 0.000
y -0.491 7.148 0.000
z 0.000 0.000 6.014


<r2> (average value of r2) Å2
<r2> 107.862
(<r2>)1/2 10.386