return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: SVWN/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at SVWN/TZVP
 hartrees
Energy at 0K-189.582468
Energy at 298.15K-189.592515
HF Energy-189.582468
Nuclear repulsion energy132.368224
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 SVWN/TZVP
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 3426 3387 0.00      
2 Ag 2935 2901 0.00      
3 Ag 1592 1574 0.00      
4 Ag 1402 1386 0.00      
5 Ag 1339 1323 0.00      
6 Ag 1125 1112 0.00      
7 Ag 1055 1043 0.00      
8 Ag 753 744 0.00      
9 Ag 456 451 0.00      
10 Au 3512 3472 4.67      
11 Au 2997 2962 51.60      
12 Au 1336 1320 1.94      
13 Au 1033 1021 0.00      
14 Au 739 730 0.95      
15 Au 249 246 112.50      
16 Au 147 145 0.25      
17 Bg 3513 3473 0.00      
18 Bg 2968 2934 0.00      
19 Bg 1314 1299 0.00      
20 Bg 1251 1236 0.00      
21 Bg 909 899 0.00      
22 Bg 293 289 0.00      
23 Bu 3425 3386 0.58      
24 Bu 2946 2913 82.91      
25 Bu 1591 1573 67.08      
26 Bu 1420 1403 3.44      
27 Bu 1273 1258 12.58      
28 Bu 1113 1101 29.17      
29 Bu 770 761 448.73      
30 Bu 255 252 26.70      

Unscaled Zero Point Vibrational Energy (zpe) 23567.4 cm-1
Scaled (by 0.9885) Zero Point Vibrational Energy (zpe) 23296.4 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 SVWN/TZVP
ABC
0.88656 0.12702 0.12040

See section I.F.4 to change rotational constant units
Geometric Data calculated at SVWN/TZVP

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.391 0.650 0.000
C2 -0.391 -0.650 0.000
N3 -0.391 1.859 0.000
N4 0.391 -1.859 0.000
H5 0.991 -1.917 0.825
H6 0.991 -1.917 -0.825
H7 -0.991 1.917 0.825
H8 -0.991 1.917 -0.825
H9 -1.062 -0.663 -0.879
H10 -1.062 -0.663 0.879
H11 1.062 0.663 -0.879
H12 1.062 0.663 0.879

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.51741.44002.50962.76292.76292.04872.04872.14622.14621.10581.1058
C21.51742.50961.44002.04872.04872.76292.76291.10581.10582.14622.1462
N31.44002.50963.80014.10554.10551.02201.02202.75372.75372.07732.0773
N42.50961.44003.80011.02201.02204.10554.10552.07732.07732.75372.7537
H52.76292.04874.10551.02201.64994.31694.62152.94842.40673.09272.5814
H62.76292.04874.10551.02201.64994.62154.31692.40672.94842.58143.0927
H72.04872.76291.02204.10554.31694.62151.64993.09272.58142.94842.4067
H82.04872.76291.02204.10554.62154.31691.64992.58143.09272.40672.9484
H92.14621.10582.75372.07732.94842.40673.09272.58141.75822.50283.0586
H102.14621.10582.75372.07732.40672.94842.58143.09271.75823.05862.5028
H111.10582.14622.07732.75373.09272.58142.94842.40672.50283.05861.7582
H121.10582.14622.07732.75372.58143.09272.40672.94843.05862.50281.7582

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 116.093 C1 C2 H9 108.789
C1 C2 H10 108.789 C1 N3 H7 111.509
C1 N3 H8 111.509 C2 C1 N3 116.093
C2 C1 H11 108.789 C2 C1 H12 108.789
C2 N4 H5 111.509 C2 N4 H6 111.509
N3 C1 H11 108.660 N3 C1 H12 108.660
N4 C2 H9 108.660 N4 C2 H10 108.660
H5 N4 H6 107.649 H7 N3 H8 107.649
H9 C2 H10 105.315 H11 C1 H12 105.315
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at SVWN/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.328      
2 C -0.328      
3 N -0.425      
4 N -0.425      
5 H 0.220      
6 H 0.220      
7 H 0.220      
8 H 0.220      
9 H 0.157      
10 H 0.157      
11 H 0.157      
12 H 0.157      


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 -24.877 -5.306 0.000
y -5.306 -35.841 0.000
z 0.000 0.000 -23.621
Traceless
 xyz
x 4.854 -5.306 0.000
y -5.306 -11.592 0.000
z 0.000 0.000 6.739
Polar
3z2-r213.477
x2-y210.964
xy-5.306
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.523 -0.462 0.000
y -0.462 7.117 0.000
z 0.000 0.000 6.140


<r2> (average value of r2) Å2
<r2> 105.723
(<r2>)1/2 10.282