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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-190.407367
Energy at 298.15K-190.417253
Nuclear repulsion energy131.285819
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 3609 3416 0.00      
2 Ag 3051 2888 0.00      
3 Ag 1720 1629 0.00      
4 Ag 1527 1446 0.00      
5 Ag 1426 1350 0.00      
6 Ag 1151 1090 0.00      
7 Ag 1048 992 0.00      
8 Ag 553 523 0.00      
9 Ag 466 441 0.00      
10 Au 3731 3532 4.48      
11 Au 3122 2955 84.07      
12 Au 1401 1326 0.03      
13 Au 1075 1017 1.23      
14 Au 766 725 2.49      
15 Au 250 237 114.55      
16 Au 146 138 0.00      
17 Bg 3732 3532 0.00      
18 Bg 3092 2926 0.00      
19 Bg 1388 1314 0.00      
20 Bg 1315 1245 0.00      
21 Bg 942 892 0.00      
22 Bg 278 263 0.00      
23 Bu 3609 3416 0.79      
24 Bu 3060 2897 107.19      
25 Bu 1721 1630 66.77      
26 Bu 1543 1461 3.08      
27 Bu 1367 1294 6.18      
28 Bu 1136 1075 44.24      
29 Bu 557 527 737.01      
30 Bu 269 255 33.30      

Unscaled Zero Point Vibrational Energy (zpe) 24525.8 cm-1
Scaled (by 0.9466) Zero Point Vibrational Energy (zpe) 23216.2 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
0.89087 0.12320 0.11719

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 0.399 0.660 0.000
C2 -0.399 -0.660 0.000
N3 -0.399 1.872 0.000
N4 0.399 -1.872 0.000
H5 0.922 -2.060 0.841
H6 0.922 -2.060 -0.841
H7 -0.922 2.060 0.841
H8 -0.922 2.060 -0.841
H9 -1.059 -0.676 -0.877
H10 -1.059 -0.676 0.877
H11 1.059 0.676 -0.877
H12 1.059 0.676 0.877

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.54281.45212.53232.89482.89482.10152.10152.16332.16331.09731.0973
C21.54282.53231.45212.10152.10152.89482.89481.09731.09732.16332.1633
N31.45212.53233.82924.23324.23321.00841.00842.77432.77432.08062.0806
N42.53231.45213.82921.00841.00844.23324.23322.08062.08062.77432.7743
H52.89482.10154.23321.00841.68304.51444.81792.96582.41773.23342.7393
H62.89482.10154.23321.00841.68304.81794.51442.41772.96582.73933.2334
H72.10152.89481.00844.23324.51444.81791.68303.23342.73932.96582.4177
H82.10152.89481.00844.23324.81794.51441.68302.73933.23342.41772.9658
H92.16331.09732.77432.08062.96582.41773.23342.73931.75332.51283.0640
H102.16331.09732.77432.08062.41772.96582.73933.23341.75333.06402.5128
H111.09732.16332.08062.77433.23342.73932.96582.41772.51283.06401.7533
H121.09732.16332.08062.77432.73933.23342.41772.96583.06402.51281.7533

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 115.432 C1 C2 H9 108.883
C1 C2 H10 108.883 C1 N3 H7 116.151
C1 N3 H8 116.151 C2 C1 N3 115.432
C2 C1 H11 108.883 C2 C1 H12 108.883
C2 N4 H5 116.151 C2 N4 H6 116.151
N3 C1 H11 108.595 N3 C1 H12 108.595
N4 C2 H9 108.595 N4 C2 H10 108.595
H5 N4 H6 113.124 H7 N3 H8 113.124
H9 C2 H10 106.048 H11 C1 H12 106.048
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.174      
2 C -0.174      
3 N -0.749      
4 N -0.749      
5 H 0.303      
6 H 0.303      
7 H 0.303      
8 H 0.303      
9 H 0.159      
10 H 0.159      
11 H 0.159      
12 H 0.159      


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 -24.187 -6.039 0.000
y -6.039 -32.952 0.000
z 0.000 0.000 -22.563
Traceless
 xyz
x 3.571 -6.039 0.000
y -6.039 -9.577 0.000
z 0.000 0.000 6.006
Polar
3z2-r212.012
x2-y28.765
xy-6.039
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.748 -0.818 0.000
y -0.818 5.411 0.000
z 0.000 0.000 5.099


<r2> (average value of r2) Å2
<r2> 107.653
(<r2>)1/2 10.376