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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: B2PLYP/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at B2PLYP/cc-pVTZ
 hartrees
Energy at 0K-190.424038
Energy at 298.15K-190.434233
HF Energy-190.168670
Nuclear repulsion energy131.795369
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 B2PLYP/cc-pVTZ
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 3360 0.00      
2 Ag 3032 2909 0.00      
3 Ag 1669 1601 0.00      
4 Ag 1495 1435 0.00      
5 Ag 1404 1347 0.00      
6 Ag 1119 1074 0.00      
7 Ag 1067 1023 0.00      
8 Ag 839 805 0.00      
9 Ag 459 440 0.00      
10 Au 3585 3439 0.41      
11 Au 3089 2963 67.88      
12 Au 1403 1346 1.41      
13 Au 1080 1036 0.28      
14 Au 765 734 0.42      
15 Au 255 245 92.79      
16 Au 148 142 0.00      
17 Bg 3585 3440 0.00      
18 Bg 3060 2936 0.00      
19 Bg 1382 1326 0.00      
20 Bg 1309 1256 0.00      
21 Bg 949 910 0.00      
22 Bg 287 276 0.00      
23 Bu 3502 3360 2.01      
24 Bu 3040 2917 85.66      
25 Bu 1668 1601 42.59      
26 Bu 1514 1452 0.66      
27 Bu 1339 1285 19.28      
28 Bu 1087 1042 15.13      
29 Bu 877 842 384.27      
30 Bu 271 260 17.76      

Unscaled Zero Point Vibrational Energy (zpe) 24390.5 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 23400.3 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 B2PLYP/cc-pVTZ
ABC
0.88352 0.12494 0.11826

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVTZ

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.397 0.656 0.000
C2 -0.397 -0.656 0.000
N3 -0.397 1.883 0.000
N4 0.397 -1.883 0.000
H5 0.999 -1.917 0.812
H6 0.999 -1.917 -0.812
H7 -0.999 1.917 0.812
H8 -0.999 1.917 -0.812
H9 -1.052 -0.673 -0.874
H10 -1.052 -0.673 0.874
H11 1.052 0.673 -0.874
H12 1.052 0.673 0.874

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.53451.46132.53912.76472.76472.04932.04932.15182.15181.09221.0922
C21.53452.53911.46132.04932.04932.76472.76471.09221.09222.15182.1518
N31.46132.53913.84844.12894.12891.01171.01172.77882.77882.08072.0807
N42.53911.46133.84841.01171.01174.12894.12892.08072.08072.77882.7788
H52.76472.04934.12891.01171.62454.32364.61872.93272.40023.09052.5907
H62.76472.04934.12891.01171.62454.61874.32362.40022.93272.59073.0905
H72.04932.76471.01174.12894.32364.61871.62453.09052.59072.93272.4002
H82.04932.76471.01174.12894.61874.32361.62452.59073.09052.40022.9327
H92.15181.09222.77882.08072.93272.40023.09052.59071.74812.49723.0482
H102.15181.09222.77882.08072.40022.93272.59073.09051.74813.04822.4972
H111.09222.15182.08072.77883.09052.59072.93272.40022.49723.04821.7481
H121.09222.15182.08072.77882.59073.09052.40022.93273.04822.49721.7481

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 115.869 C1 C2 H9 108.851
C1 C2 H10 108.851 C1 N3 H7 110.608
C1 N3 H8 110.608 C2 C1 N3 115.869
C2 C1 H11 108.851 C2 C1 H12 108.851
C2 N4 H5 110.608 C2 N4 H6 110.608
N3 C1 H11 108.271 N3 C1 H12 108.271
N4 C2 H9 108.271 N4 C2 H10 108.271
H5 N4 H6 106.810 H7 N3 H8 106.810
H9 C2 H10 106.317 H11 C1 H12 106.317
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.086      
2 C -0.086      
3 N -0.347      
4 N -0.347      
5 H 0.133      
6 H 0.133      
7 H 0.133      
8 H 0.133      
9 H 0.084      
10 H 0.084      
11 H 0.084      
12 H 0.084      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.209 -0.511 0.000
y -0.511 6.830 0.000
z 0.000 0.000 5.850


<r2> (average value of r2) Å2
<r2> 106.624
(<r2>)1/2 10.326