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All results from a given calculation for C2H8N2 (Ethylenediamine)

using model chemistry: HF/aug-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 HF/aug-cc-pVDZ
 hartrees
Energy at 0K-189.307826
Energy at 298.15K-189.318240
Nuclear repulsion energy132.237340
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 HF/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 3718 3385 0.00      
2 Ag 3164 2881 0.00      
3 Ag 1782 1623 0.00      
4 Ag 1592 1449 0.00      
5 Ag 1525 1389 0.00      
6 Ag 1189 1083 0.00      
7 Ag 1145 1042 0.00      
8 Ag 889 809 0.00      
9 Ag 491 447 0.00      
10 Au 3799 3460 3.63      
11 Au 3217 2930 100.57      
12 Au 1495 1361 0.35      
13 Au 1139 1037 0.49      
14 Au 808 736 0.18      
15 Au 266 242 100.71      
16 Au 155 141 0.30      
17 Bg 3800 3460 0.00      
18 Bg 3187 2902 0.00      
19 Bg 1470 1338 0.00      
20 Bg 1396 1271 0.00      
21 Bg 1006 916 0.00      
22 Bg 296 270 0.00      
23 Bu 3717 3385 2.14      
24 Bu 3168 2885 110.22      
25 Bu 1781 1622 56.94      
26 Bu 1605 1462 1.52      
27 Bu 1429 1302 25.17      
28 Bu 1156 1053 41.60      
29 Bu 928 845 366.78      
30 Bu 303 276 18.25      

Unscaled Zero Point Vibrational Energy (zpe) 25807.8 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 23500.6 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 HF/aug-cc-pVDZ
ABC
0.88511 0.12597 0.11919

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.399 0.653 0.000
C2 -0.399 -0.653 0.000
N3 -0.399 1.869 0.000
N4 0.399 -1.869 0.000
H5 0.993 -1.915 0.807
H6 0.993 -1.915 -0.807
H7 -0.993 1.915 0.807
H8 -0.993 1.915 -0.807
H9 -1.053 -0.677 -0.875
H10 -1.053 -0.677 0.875
H11 1.053 0.677 -0.875
H12 1.053 0.677 0.875

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10 H11 H12
C11.53091.45442.52232.75732.75732.04502.04502.15452.15451.09241.0924
C21.53092.52231.45442.04502.04502.75732.75731.09241.09242.15452.1545
N31.45442.52233.82244.11244.11241.00321.00322.77032.77032.07232.0723
N42.52231.45443.82241.00321.00324.11244.11242.07232.07232.77032.7703
H52.75732.04504.11241.00321.61444.31504.60712.92372.39233.09082.5939
H62.75732.04504.11241.00321.61444.60714.31502.39232.92372.59393.0908
H72.04502.75731.00324.11244.31504.60711.61443.09082.59392.92372.3923
H82.04502.75731.00324.11244.60714.31501.61442.59393.09082.39232.9237
H92.15451.09242.77032.07232.92372.39233.09082.59391.74982.50303.0540
H102.15451.09242.77032.07232.39232.92372.59393.09081.74983.05402.5030
H111.09242.15452.07232.77033.09082.59392.92372.39232.50303.05401.7498
H121.09242.15452.07232.77032.59393.09082.39232.92373.05402.50301.7498

picture of Ethylenediamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 115.304 C1 C2 H9 109.291
C1 C2 H10 109.291 C1 N3 H7 111.312
C1 N3 H8 111.312 C2 C1 N3 115.304
C2 C1 H11 109.291 C2 C1 H12 109.291
C2 N4 H5 111.312 C2 N4 H6 111.312
N3 C1 H11 108.077 N3 C1 H12 108.077
N4 C2 H9 108.077 N4 C2 H10 108.077
H5 N4 H6 107.156 H7 N3 H8 107.156
H9 C2 H10 106.434 H11 C1 H12 106.434
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.688      
2 C 0.688      
3 N -0.433      
4 N -0.433      
5 H -0.012      
6 H -0.012      
7 H -0.012      
8 H -0.012      
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 -24.471 -4.691 0.000
y -4.691 -36.404 0.000
z 0.000 0.000 -23.451
Traceless
 xyz
x 5.457 -4.691 0.000
y -4.691 -12.443 0.000
z 0.000 0.000 6.986
Polar
3z2-r213.972
x2-y211.933
xy-4.691
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.290 -0.381 0.000
y -0.381 7.106 0.000
z 0.000 0.000 5.822


<r2> (average value of r2) Å2
<r2> 106.285
(<r2>)1/2 10.309