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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: BLYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at BLYP/3-21G*
 hartrees
Energy at 0K-189.357281
Energy at 298.15K-189.367276
Nuclear repulsion energy128.885510
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 BLYP/3-21G*
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 3238 3217 0.00      
2 Ag 2950 2931 0.00      
3 Ag 1681 1670 0.00      
4 Ag 1491 1481 0.00      
5 Ag 1358 1349 0.00      
6 Ag 1058 1051 0.00      
7 Ag 930 924 0.00      
8 Ag 700 696 0.00      
9 Ag 427 425 0.00      
10 Au 3331 3309 15.07      
11 Au 3011 2992 68.44      
12 Au 1377 1368 5.37      
13 Au 1079 1072 0.41      
14 Au 741 737 1.33      
15 Au 287 285 129.22      
16 Au 144 143 0.23      
17 Bg 3331 3310 0.00      
18 Bg 2980 2961 0.00      
19 Bg 1359 1351 0.00      
20 Bg 1294 1286 0.00      
21 Bg 927 921 0.00      
22 Bg 317 315 0.00      
23 Bu 3238 3217 17.73      
24 Bu 2959 2939 81.95      
25 Bu 1681 1670 25.74      
26 Bu 1511 1501 1.29      
27 Bu 1307 1299 7.30      
28 Bu 1027 1020 8.70      
29 Bu 711 706 456.07      
30 Bu 243 241 19.82      

Unscaled Zero Point Vibrational Energy (zpe) 23343.5 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 23191.8 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 BLYP/3-21G*
ABC
0.84857 0.11911 0.11289

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/3-21G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.408 0.669 0.000
C2 -0.408 -0.669 0.000
N3 -0.408 1.926 0.000
N4 0.408 -1.926 0.000
H5 1.019 -1.955 0.838
H6 1.019 -1.955 -0.838
H7 -1.019 1.955 0.838
H8 -1.019 1.955 -0.838
H9 -1.061 -0.689 -0.891
H10 -1.061 -0.689 0.891
H11 1.061 0.689 -0.891
H12 1.061 0.689 0.891

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.56851.49842.59502.82182.82182.09602.09602.19102.19101.10491.1049
C21.56852.59501.49842.09602.09602.82182.82181.10491.10492.19102.1910
N31.49842.59503.93684.21884.21881.03751.03752.83852.83852.11752.1175
N42.59501.49843.93681.03751.03754.21884.21882.11752.11752.83852.8385
H52.82182.09604.21881.03751.67624.40924.71712.98702.43613.15942.6447
H62.82182.09604.21881.03751.67624.71714.40922.43612.98702.64473.1594
H72.09602.82181.03754.21884.40924.71711.67623.15942.64472.98702.4361
H82.09602.82181.03754.21884.71714.40921.67622.64473.15942.43612.9870
H92.19101.10492.83852.11752.98702.43613.15942.64471.78222.53113.0956
H102.19101.10492.83852.11752.43612.98702.64473.15941.78223.09562.5311
H111.10492.19102.11752.83853.15942.64472.98702.43612.53113.09561.7822
H121.10492.19102.11752.83852.64473.15942.43612.98703.09562.53111.7822

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 115.569 C1 C2 H9 108.842
C1 C2 H10 108.842 C1 N3 H7 110.159
C1 N3 H8 110.159 C2 C1 N3 115.569
C2 C1 H11 108.842 C2 C1 H12 108.842
C2 N4 H5 110.159 C2 N4 H6 110.159
N3 C1 H11 107.900 N3 C1 H12 107.900
N4 C2 H9 107.900 N4 C2 H10 107.900
H5 N4 H6 107.767 H7 N3 H8 107.767
H9 C2 H10 107.510 H11 C1 H12 107.510
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.240      
2 C -0.240      
3 N -0.597      
4 N -0.597      
5 H 0.243      
6 H 0.243      
7 H 0.243      
8 H 0.243      
9 H 0.175      
10 H 0.175      
11 H 0.175      
12 H 0.175      


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 -23.372 -5.294 0.000
y -5.294 -35.796 0.000
z 0.000 0.000 -23.352
Traceless
 xyz
x 6.201 -5.294 0.000
y -5.294 -12.434 0.000
z 0.000 0.000 6.232
Polar
3z2-r212.465
x2-y212.423
xy-5.294
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.911 -0.948 0.000
y -0.948 5.467 0.000
z 0.000 0.000 5.150


<r2> (average value of r2) Å2
<r2> 110.653
(<r2>)1/2 10.519