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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: mPW1PW91/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-190.482138
Energy at 298.15K-190.492442
Nuclear repulsion energy131.752998
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/cc-pVDZ
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 3497 3351 0.00      
2 Ag 3032 2905 0.00      
3 Ag 1660 1590 0.00      
4 Ag 1463 1402 0.00      
5 Ag 1400 1342 0.00      
6 Ag 1147 1099 0.00      
7 Ag 1084 1039 0.00      
8 Ag 871 835 0.00      
9 Ag 465 446 0.00      
10 Au 3576 3427 0.00      
11 Au 3094 2965 72.58      
12 Au 1399 1341 2.71      
13 Au 1080 1035 0.27      
14 Au 763 731 1.13      
15 Au 287 275 97.70      
16 Au 152 146 0.23      
17 Bg 3577 3428 0.00      
18 Bg 3066 2939 0.00      
19 Bg 1374 1317 0.00      
20 Bg 1299 1245 0.00      
21 Bg 951 911 0.00      
22 Bg 324 311 0.00      
23 Bu 3496 3351 1.88      
24 Bu 3038 2911 95.88      
25 Bu 1658 1589 36.32      
26 Bu 1479 1417 0.81      
27 Bu 1320 1265 30.88      
28 Bu 1123 1076 16.44      
29 Bu 908 870 352.51      
30 Bu 270 258 17.06      

Unscaled Zero Point Vibrational Energy (zpe) 24426.2 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 23407.6 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/cc-pVDZ
ABC
0.87828 0.12543 0.11865

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVDZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.394 0.657 0.000
C2 -0.394 -0.657 0.000
N3 -0.394 1.879 0.000
N4 0.394 -1.879 0.000
H5 1.016 -1.878 0.809
H6 1.016 -1.878 -0.809
H7 -1.016 1.878 0.809
H8 -1.016 1.878 -0.809
H9 -1.061 -0.676 -0.880
H10 -1.061 -0.676 0.880
H11 1.061 0.676 -0.880
H12 1.061 0.676 0.880

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.53151.45452.53582.73232.73232.03332.03332.16022.16021.10441.1044
C21.53152.53581.45452.03332.03332.73232.73231.10441.10442.16022.1602
N31.45452.53583.84004.09374.09371.02061.02062.78332.78332.08322.0832
N42.53581.45453.84001.02061.02064.09374.09372.08322.08322.78332.7833
H52.73232.03334.09371.02061.61804.27034.56662.93472.40103.06202.5550
H62.73232.03334.09371.02061.61804.56664.27032.40102.93472.55503.0620
H72.03332.73231.02064.09374.27034.56661.61803.06202.55502.93472.4010
H82.03332.73231.02064.09374.56664.27031.61802.55503.06202.40102.9347
H92.16021.10442.78332.08322.93472.40103.06202.55501.75992.51593.0703
H102.16021.10442.78332.08322.40102.93472.55503.06201.75993.07032.5159
H111.10442.16022.08322.78333.06202.55502.93472.40102.51593.07031.7599
H121.10442.16022.08322.78332.55503.06202.40102.93473.07032.51591.7599

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 116.233 C1 C2 H9 109.002
C1 C2 H10 109.002 C1 N3 H7 109.220
C1 N3 H8 109.220 C2 C1 N3 116.233
C2 C1 H11 109.002 C2 C1 H12 109.002
C2 N4 H5 109.220 C2 N4 H6 109.220
N3 C1 H11 108.220 N3 C1 H12 108.220
N4 C2 H9 108.220 N4 C2 H10 108.220
H5 N4 H6 104.878 H7 N3 H8 104.878
H9 C2 H10 105.651 H11 C1 H12 105.651
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.021      
2 C -0.021      
3 N -0.216      
4 N -0.216      
5 H 0.085      
6 H 0.085      
7 H 0.085      
8 H 0.085      
9 H 0.033      
10 H 0.033      
11 H 0.033      
12 H 0.033      


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 -23.675 -4.546 0.000
y -4.546 -34.591 0.000
z 0.000 0.000 -23.378
Traceless
 xyz
x 5.310 -4.546 0.000
y -4.546 -11.065 0.000
z 0.000 0.000 5.755
Polar
3z2-r211.510
x2-y210.916
xy-4.546
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.598 -0.608 0.000
y -0.608 5.892 0.000
z 0.000 0.000 5.405


<r2> (average value of r2) Å2
<r2> 105.929
(<r2>)1/2 10.292