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All results from a given calculation for H2NCHCHNH2 (diaminoethylene)

using model chemistry: TPSSh/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at TPSSh/6-31G*
 hartrees
Energy at 0K-189.291258
Energy at 298.15K 
HF Energy-189.291258
Nuclear repulsion energy117.137745
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 TPSSh/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3557 3412 0.04      
2 A 3456 3315 0.60      
3 A 3160 3031 0.14      
4 A 1766 1695 0.00      
5 A 1682 1614 27.48      
6 A 1350 1295 0.68      
7 A 1298 1245 0.02      
8 A 1047 1004 1.84      
9 A 945 907 63.76      
10 A 856 821 138.64      
11 A 549 527 1.04      
12 A 340 326 0.02      
13 A 256 245 19.82      
14 B 3556 3411 1.24      
15 B 3454 3313 4.08      
16 B 3161 3033 61.31      
17 B 1692 1623 39.30      
18 B 1410 1353 9.95      
19 B 1188 1139 71.89      
20 B 1137 1091 1.42      
21 B 804 772 402.88      
22 B 768 737 90.58      
23 B 356 341 63.22      
24 B 256 245 82.43      

Unscaled Zero Point Vibrational Energy (zpe) 19020.4 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 18248.1 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 TPSSh/6-31G*
ABC
1.42591 0.13159 0.12242

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.313 0.594 0.043
C2 -0.313 -0.594 0.043
N3 -0.313 1.856 -0.118
N4 0.313 -1.856 -0.118
H5 1.402 0.646 0.042
H6 -1.402 -0.646 0.042
H7 -1.327 1.781 -0.061
H8 1.327 -1.781 -0.061
H9 -0.005 2.526 0.586
H10 0.005 -2.526 0.586

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8 H9 H10
C11.34371.41832.45591.08962.11642.02742.58452.03183.1822
C21.34372.45591.41832.11641.08962.58452.02743.18222.0318
N31.41832.45593.76532.10562.73321.01853.99051.01944.4500
N42.45591.41833.76532.73322.10563.99051.01854.45001.0194
H51.08962.11642.10562.73323.08662.95762.42962.41073.5078
H62.11641.08962.73322.10563.08662.42962.95763.50782.4107
H72.02742.58451.01853.99052.95762.42964.44201.64994.5542
H82.58452.02743.99051.01852.42962.95764.44204.55421.6499
H92.03183.18221.01944.45002.41073.50781.64994.55425.0518
H103.18222.03184.45001.01943.50782.41074.55421.64995.0518

picture of diaminoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 125.525 C1 C2 H6 120.501
C1 N3 H7 111.555 C1 N3 H9 111.875
C2 C1 N3 125.525 C2 C1 H5 120.501
C2 N4 H8 111.555 C2 N4 H10 111.875
N3 C1 H5 113.543 N4 C2 H6 113.543
H7 N3 H9 108.113 H8 N4 H10 108.113
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.028      
2 C -0.028      
3 N -0.743      
4 N -0.743      
5 H 0.140      
6 H 0.140      
7 H 0.316      
8 H 0.316      
9 H 0.316      
10 H 0.316      


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 2.402 2.402
CHELPG        
AIM        
ESP        


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 5.177 0.070 0.000
y 0.070 8.615 0.000
z 0.000 0.000 2.695


<r2> (average value of r2) Å2
<r2> 98.066
(<r2>)1/2 9.903