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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-190.482023
Energy at 298.15K-190.492263
Nuclear repulsion energy131.870560
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 3537 3365 0.00      
2 Ag 3045 2897 0.00      
3 Ag 1682 1600 0.00      
4 Ag 1496 1424 0.00      
5 Ag 1416 1347 0.00      
6 Ag 1143 1088 0.00      
7 Ag 1075 1022 0.00      
8 Ag 849 808 0.00      
9 Ag 464 442 0.00      
10 Au 3627 3451 0.02      
11 Au 3108 2957 73.51      
12 Au 1409 1341 1.81      
13 Au 1082 1030 0.26      
14 Au 760 723 0.95      
15 Au 276 263 119.70      
16 Au 151 143 0.13      
17 Bg 3627 3451 0.00      
18 Bg 3081 2932 0.00      
19 Bg 1385 1318 0.00      
20 Bg 1312 1248 0.00      
21 Bg 951 905 0.00      
22 Bg 313 298 0.00      
23 Bu 3536 3365 1.03      
24 Bu 3053 2905 92.67      
25 Bu 1680 1599 47.92      
26 Bu 1513 1440 0.81      
27 Bu 1337 1272 24.20      
28 Bu 1120 1065 14.76      
29 Bu 880 837 428.26      
30 Bu 268 255 19.92      

Unscaled Zero Point Vibrational Energy (zpe) 24587.6 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 23395.1 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
0.88272 0.12525 0.11855

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 1.878 0.000
N4 0.395 -1.878 0.000
H5 1.004 -1.895 0.811
H6 1.004 -1.895 -0.811
H7 -1.004 1.895 0.811
H8 -1.004 1.895 -0.811
H9 -1.056 -0.677 -0.876
H10 -1.056 -0.677 0.876
H11 1.056 0.677 -0.876
H12 1.056 0.677 0.876

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.53381.45472.53552.74672.74672.03722.03722.15752.15751.09741.0974
C21.53382.53551.45472.03722.03722.74672.74671.09741.09742.15752.1575
N31.45472.53553.83904.10584.10581.01461.01462.78112.78112.07772.0777
N42.53551.45473.83901.01461.01464.10584.10582.07772.07772.78112.7811
H52.74672.03724.10581.01461.62254.28994.58652.92852.39463.07672.5738
H62.74672.03724.10581.01461.62254.58654.28992.39462.92852.57383.0767
H72.03722.74671.01464.10584.28994.58651.62253.07672.57382.92852.3946
H82.03722.74671.01464.10584.58654.28991.62252.57383.07672.39462.9285
H92.15751.09742.78112.07772.92852.39463.07672.57381.75152.50953.0602
H102.15751.09742.78112.07772.39462.92852.57383.07671.75153.06022.5095
H111.09742.15752.07772.78113.07672.57382.92852.39462.50953.06021.7515
H121.09742.15752.07772.78112.57383.07672.39462.92853.06022.50951.7515

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 116.053 C1 C2 H9 109.034
C1 C2 H10 109.034 C1 N3 H7 109.893
C1 N3 H8 109.893 C2 C1 N3 116.053
C2 C1 H11 109.034 C2 C1 H12 109.034
C2 N4 H5 109.893 C2 N4 H6 109.893
N3 C1 H11 108.181 N3 C1 H12 108.181
N4 C2 H9 108.181 N4 C2 H10 108.181
H5 N4 H6 106.182 H7 N3 H8 106.182
H9 C2 H10 105.884 H11 C1 H12 105.884
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 -0.129      
2 C -0.129      
3 N -0.631      
4 N -0.631      
5 H 0.256      
6 H 0.256      
7 H 0.256      
8 H 0.256      
9 H 0.124      
10 H 0.124      
11 H 0.124      
12 H 0.124      


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 -23.358 -4.953 0.000
y -4.953 -35.396 0.000
z 0.000 0.000 -23.081
Traceless
 xyz
x 5.881 -4.953 0.000
y -4.953 -12.177 0.000
z 0.000 0.000 6.296
Polar
3z2-r212.592
x2-y212.038
xy-4.953
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.276 -0.697 0.000
y -0.697 5.693 0.000
z 0.000 0.000 5.295


<r2> (average value of r2) Å2
<r2> 106.065
(<r2>)1/2 10.299