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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-186.960747
Energy at 298.15K-186.965179
HF Energy-186.960747
Nuclear repulsion energy103.010258
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/Def2TZVPP
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 3865 3504 36.41      
2 A 3773 3420 3.11      
3 A 2527 2290 0.09      
4 A 1789 1622 10.62      
5 A 1309 1186 0.62      
6 A 866 785 5.53      
7 A 644 584 124.91      
8 A 515 467 20.58      
9 A 389 352 22.57      
10 A 250 227 26.12      
11 B 3866 3504 35.34      
12 B 3774 3420 30.96      
13 B 1790 1623 41.75      
14 B 1412 1280 120.27      
15 B 1309 1186 0.63      
16 B 693 628 302.57      
17 B 522 473 45.40      
18 B 250 227 27.34      

Unscaled Zero Point Vibrational Energy (zpe) 14770.8 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 13388.2 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/Def2TZVPP
ABC
5.33629 0.12173 0.12171

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.591 0.048
C2 -0.000 -0.591 0.048
N3 -0.000 1.938 -0.081
N4 0.000 -1.938 -0.081
H5 -0.330 2.432 0.716
H6 0.844 2.322 -0.437
H7 0.330 -2.432 0.716
H8 -0.844 -2.322 -0.437

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.18271.35252.53241.98551.98573.11353.0719
C21.18272.53241.35253.11353.07191.98551.9857
N31.35252.53243.87550.99380.99394.45374.3573
N42.53241.35253.87554.45374.35730.99380.9939
H51.98553.11350.99384.45371.64944.90784.9185
H61.98573.07190.99394.35731.64944.91854.9416
H73.11351.98554.45370.99384.90784.91851.6494
H83.07191.98574.35730.99394.91854.94161.6494

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 174.550 C1 N3 H5 114.749
C1 N3 H6 114.751 C2 C1 N3 174.550
C2 N4 H7 114.749 C2 N4 H8 114.751
H5 N3 H6 112.159 H7 N4 H8 112.159
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.017      
2 C 0.017      
3 N -0.401      
4 N -0.401      
5 H 0.190      
6 H 0.193      
7 H 0.190      
8 H 0.193      


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 1.482 1.482
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.818 4.241 0.000
y 4.241 -14.800 0.000
z 0.000 0.000 -23.951
Traceless
 xyz
x -4.442 4.241 0.000
y 4.241 9.085 0.000
z 0.000 0.000 -4.642
Polar
3z2-r2-9.285
x2-y2-9.018
xy4.241
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.830 0.149 0.000
y 0.149 8.544 0.000
z 0.000 0.000 3.827


<r2> (average value of r2) Å2
<r2> 95.792
(<r2>)1/2 9.787