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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: mPW1PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at mPW1PW91/6-311G**
 hartrees
Energy at 0K-190.526154
Energy at 298.15K-190.536369
Nuclear repulsion energy131.900490
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 mPW1PW91/6-311G**
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 3529 3376 0.00      
2 Ag 3030 2899 0.00      
3 Ag 1672 1600 0.00      
4 Ag 1484 1419 0.00      
5 Ag 1405 1344 0.00      
6 Ag 1134 1084 0.00      
7 Ag 1070 1024 0.00      
8 Ag 839 802 0.00      
9 Ag 460 440 0.00      
10 Au 3609 3452 0.05      
11 Au 3088 2955 77.02      
12 Au 1404 1343 2.27      
13 Au 1080 1033 0.18      
14 Au 760 727 0.63      
15 Au 265 253 105.27      
16 Au 148 141 0.24      
17 Bg 3609 3453 0.00      
18 Bg 3060 2927 0.00      
19 Bg 1379 1319 0.00      
20 Bg 1306 1249 0.00      
21 Bg 948 907 0.00      
22 Bg 304 291 0.00      
23 Bu 3528 3375 1.06      
24 Bu 3038 2907 95.82      
25 Bu 1671 1599 52.14      
26 Bu 1501 1436 1.51      
27 Bu 1331 1274 19.73      
28 Bu 1109 1061 18.68      
29 Bu 871 834 413.27      
30 Bu 266 255 19.21      

Unscaled Zero Point Vibrational Energy (zpe) 24447.1 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 23388.6 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 mPW1PW91/6-311G**
ABC
0.88429 0.12523 0.11855

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.395 0.656 0.000
C2 -0.395 -0.656 0.000
N3 -0.395 1.878 0.000
N4 0.395 -1.878 0.000
H5 1.002 -1.901 0.811
H6 1.002 -1.901 -0.811
H7 -1.002 1.901 0.811
H8 -1.002 1.901 -0.811
H9 -1.056 -0.675 -0.875
H10 -1.056 -0.675 0.875
H11 1.056 0.675 -0.875
H12 1.056 0.675 0.875

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.53241.45532.53432.75082.75082.03972.03972.15492.15491.09621.0962
C21.53242.53431.45532.03972.03972.75082.75081.09621.09622.15492.1549
N31.45532.53433.83844.11014.11011.01331.01332.77842.77842.07802.0780
N42.53431.45533.83841.01331.01334.11014.11012.07802.07802.77842.7784
H52.75082.03974.11011.01331.62284.29804.59422.92922.39603.07952.5776
H62.75082.03974.11011.01331.62284.59424.29802.39602.92922.57763.0795
H72.03972.75081.01334.11014.29804.59421.62283.07952.57762.92922.3960
H82.03972.75081.01334.11014.59424.29801.62282.57763.07952.39602.9292
H92.15491.09622.77842.07802.92922.39603.07952.57761.74972.50613.0564
H102.15491.09622.77842.07802.39602.92922.57763.07951.74973.05642.5061
H111.09622.15492.07802.77843.07952.57762.92922.39602.50613.05641.7497
H121.09622.15492.07802.77842.57763.07952.39602.92923.05642.50611.7497

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 116.019 C1 C2 H9 108.996
C1 C2 H10 108.996 C1 N3 H7 110.144
C1 N3 H8 110.144 C2 C1 N3 116.019
C2 C1 H11 108.996 C2 C1 H12 108.996
C2 N4 H5 110.144 C2 N4 H6 110.144
N3 C1 H11 108.234 N3 C1 H12 108.234
N4 C2 H9 108.234 N4 C2 H10 108.234
H5 N4 H6 106.405 H7 N3 H8 106.405
H9 C2 H10 105.894 H11 C1 H12 105.894
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.148      
2 C -0.148      
3 N -0.466      
4 N -0.466      
5 H 0.192      
6 H 0.192      
7 H 0.192      
8 H 0.192      
9 H 0.115      
10 H 0.115      
11 H 0.115      
12 H 0.115      


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 -23.915 -4.854 0.000
y -4.854 -35.326 0.000
z 0.000 0.000 -23.266
Traceless
 xyz
x 5.381 -4.854 0.000
y -4.854 -11.736 0.000
z 0.000 0.000 6.355
Polar
3z2-r212.709
x2-y211.411
xy-4.854
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.775 -0.541 0.000
y -0.541 6.260 0.000
z 0.000 0.000 5.579


<r2> (average value of r2) Å2
<r2> 106.238
(<r2>)1/2 10.307