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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: B3PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B3PW91/6-311G**
 hartrees
Energy at 0K-190.505486
Energy at 298.15K-190.515682
Nuclear repulsion energy131.629942
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 B3PW91/6-311G**
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 3503 3374 0.00      
2 Ag 3013 2902 0.00      
3 Ag 1663 1602 0.00      
4 Ag 1476 1422 0.00      
5 Ag 1394 1343 0.00      
6 Ag 1123 1082 0.00      
7 Ag 1057 1018 0.00      
8 Ag 833 802 0.00      
9 Ag 456 439 0.00      
10 Au 3582 3450 0.00      
11 Au 3070 2957 77.31      
12 Au 1396 1344 2.32      
13 Au 1075 1035 0.17      
14 Au 757 729 0.68      
15 Au 266 256 104.76      
16 Au 146 141 0.18      
17 Bg 3583 3451 0.00      
18 Bg 3041 2929 0.00      
19 Bg 1371 1320 0.00      
20 Bg 1298 1250 0.00      
21 Bg 943 908 0.00      
22 Bg 305 294 0.00      
23 Bu 3503 3373 1.46      
24 Bu 3021 2910 96.40      
25 Bu 1662 1601 50.67      
26 Bu 1494 1438 1.48      
27 Bu 1324 1275 19.14      
28 Bu 1096 1056 16.89      
29 Bu 866 834 412.81      
30 Bu 264 255 18.92      

Unscaled Zero Point Vibrational Energy (zpe) 24290.6 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 23394.3 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 B3PW91/6-311G**
ABC
0.88180 0.12462 0.11799

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G**

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.396 0.658 0.000
C2 -0.396 -0.658 0.000
N3 -0.396 1.883 0.000
N4 0.396 -1.883 0.000
H5 1.004 -1.905 0.813
H6 1.004 -1.905 -0.813
H7 -1.004 1.905 0.813
H8 -1.004 1.905 -0.813
H9 -1.057 -0.678 -0.876
H10 -1.057 -0.678 0.876
H11 1.057 0.678 -0.876
H12 1.057 0.678 0.876

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.53571.45852.54082.75682.75682.04342.04342.15922.15921.09751.0975
C21.53572.54081.45852.04342.04342.75682.75681.09751.09752.15922.1592
N31.45852.54083.84804.11944.11941.01521.01522.78592.78592.08082.0808
N42.54081.45853.84801.01521.01524.11944.11942.08082.08082.78592.7859
H52.75682.04344.11941.01521.62514.30724.60362.93342.39953.08652.5844
H62.75682.04344.11941.01521.62514.60364.30722.39952.93342.58443.0865
H72.04342.75681.01524.11944.30724.60361.62513.08652.58442.93342.3995
H82.04342.75681.01524.11944.60364.30721.62512.58443.08652.39952.9334
H92.15921.09752.78592.08082.93342.39953.08652.58441.75192.51113.0618
H102.15921.09752.78592.08082.39952.93342.58443.08651.75193.06182.5111
H111.09752.15922.08082.78593.08652.58442.93342.39952.51113.06181.7519
H121.09752.15922.08082.78592.58443.08652.39952.93343.06182.51111.7519

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 116.092 C1 C2 H9 109.029
C1 C2 H10 109.029 C1 N3 H7 110.103
C1 N3 H8 110.103 C2 C1 N3 116.092
C2 C1 H11 109.029 C2 C1 H12 109.029
C2 N4 H5 110.103 C2 N4 H6 110.103
N3 C1 H11 108.161 N3 C1 H12 108.161
N4 C2 H9 108.161 N4 C2 H10 108.161
H5 N4 H6 106.339 H7 N3 H8 106.339
H9 C2 H10 105.894 H11 C1 H12 105.894
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.150      
2 C -0.150      
3 N -0.463      
4 N -0.463      
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 -23.927 -4.861 0.000
y -4.861 -35.358 0.000
z 0.000 0.000 -23.289
Traceless
 xyz
x 5.397 -4.861 0.000
y -4.861 -11.750 0.000
z 0.000 0.000 6.353
Polar
3z2-r212.706
x2-y211.431
xy-4.861
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.819 -0.548 0.000
y -0.548 6.326 0.000
z 0.000 0.000 5.615


<r2> (average value of r2) Å2
<r2> 106.660
(<r2>)1/2 10.328