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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: mPW1PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at mPW1PW91/6-31G*
 hartrees
Energy at 0K-190.463834
Energy at 298.15K-190.474081
Nuclear repulsion energy131.777100
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 mPW1PW91/6-31G*
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 3512 3330 0.00      
2 Ag 3052 2894 0.00      
3 Ag 1713 1625 0.00      
4 Ag 1512 1434 0.00      
5 Ag 1426 1353 0.00      
6 Ag 1149 1089 0.00      
7 Ag 1082 1026 0.00      
8 Ag 867 822 0.00      
9 Ag 463 439 0.00      
10 Au 3601 3415 0.06      
11 Au 3114 2953 76.23      
12 Au 1422 1349 2.01      
13 Au 1092 1035 0.31      
14 Au 763 723 0.88      
15 Au 278 263 126.28      
16 Au 150 142 0.09      
17 Bg 3601 3415 0.00      
18 Bg 3086 2927 0.00      
19 Bg 1397 1325 0.00      
20 Bg 1323 1254 0.00      
21 Bg 957 908 0.00      
22 Bg 315 299 0.00      
23 Bu 3511 3330 1.72      
24 Bu 3060 2902 93.05      
25 Bu 1712 1623 50.55      
26 Bu 1529 1450 1.06      
27 Bu 1349 1279 26.26      
28 Bu 1123 1065 12.06      
29 Bu 904 857 437.66      
30 Bu 268 254 20.64      

Unscaled Zero Point Vibrational Energy (zpe) 24663.9 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 23388.8 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 mPW1PW91/6-31G*
ABC
0.88173 0.12507 0.11839

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.395 0.657 0.000
C2 -0.395 -0.657 0.000
N3 -0.395 1.880 0.000
N4 0.395 -1.880 0.000
H5 1.006 -1.894 0.812
H6 1.006 -1.894 -0.812
H7 -1.006 1.894 0.812
H8 -1.006 1.894 -0.812
H9 -1.056 -0.680 -0.877
H10 -1.056 -0.680 0.877
H11 1.056 0.680 -0.877
H12 1.056 0.680 0.877

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.53421.45592.53742.74672.74672.03812.03812.15942.15941.09781.0978
C21.53422.53741.45592.03812.03812.74672.74671.09781.09782.15942.1594
N31.45592.53743.84224.10734.10731.01621.01622.78542.78542.07692.0769
N42.53741.45593.84221.01621.01624.10734.10732.07692.07692.78542.7854
H52.74672.03814.10731.01621.62374.29034.58722.92882.39393.07922.5758
H62.74672.03814.10731.01621.62374.58724.29032.39392.92882.57583.0792
H72.03812.74671.01624.10734.29034.58721.62373.07922.57582.92882.3939
H82.03812.74671.01624.10734.58724.29031.62372.57583.07922.39392.9288
H92.15941.09782.78542.07692.92882.39393.07922.57581.75352.51153.0631
H102.15941.09782.78542.07692.39392.92882.57583.07921.75353.06312.5115
H111.09782.15942.07692.78543.07922.57582.92882.39392.51153.06311.7535
H121.09782.15942.07692.78542.57583.07922.39392.92883.06312.51151.7535

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 116.090 C1 C2 H9 109.128
C1 C2 H10 109.128 C1 N3 H7 109.784
C1 N3 H8 109.784 C2 C1 N3 116.090
C2 C1 H11 109.128 C2 C1 H12 109.128
C2 N4 H5 109.784 C2 N4 H6 109.784
N3 C1 H11 108.016 N3 C1 H12 108.016
N4 C2 H9 108.016 N4 C2 H10 108.016
H5 N4 H6 106.045 H7 N3 H8 106.045
H9 C2 H10 105.995 H11 C1 H12 105.995
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.211      
2 C -0.211      
3 N -0.743      
4 N -0.743      
5 H 0.315      
6 H 0.315      
7 H 0.315      
8 H 0.315      
9 H 0.162      
10 H 0.162      
11 H 0.162      
12 H 0.162      


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 -23.336 -5.046 0.000
y -5.046 -35.859 0.000
z 0.000 0.000 -23.033
Traceless
 xyz
x 6.110 -5.046 0.000
y -5.046 -12.675 0.000
z 0.000 0.000 6.565
Polar
3z2-r213.130
x2-y212.523
xy-5.046
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.187 -0.698 0.000
y -0.698 5.606 0.000
z 0.000 0.000 5.221


<r2> (average value of r2) Å2
<r2> 106.260
(<r2>)1/2 10.308