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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: B97D3/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B97D3/6-311G*
 hartrees
Energy at 0K-187.960949
Energy at 298.15K-187.964806
HF Energy-187.960949
Nuclear repulsion energy101.750016
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 B97D3/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3513 3513 3.55      
2 A 3438 3438 0.92      
3 A 2312 2312 0.52      
4 A 1672 1672 10.56      
5 A 1198 1198 0.45      
6 A 813 813 2.82      
7 A 533 533 162.15      
8 A 441 441 15.11      
9 A 393 393 7.04      
10 A 165 165 23.65      
11 B 3512 3512 3.18      
12 B 3442 3442 11.83      
13 B 1673 1673 18.36      
14 B 1364 1364 95.89      
15 B 1198 1198 0.53      
16 B 599 599 357.01      
17 B 393 393 13.12      
18 B 166 166 26.00      

Unscaled Zero Point Vibrational Energy (zpe) 13412.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13412.0 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 B97D3/6-311G*
ABC
5.20466 0.11906 0.11904

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-311G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.003 0.608 0.055
C2 -0.003 -0.608 0.055
N3 -0.003 1.958 -0.084
N4 0.003 -1.958 -0.084
H5 -0.341 2.478 0.718
H6 0.847 2.363 -0.461
H7 0.341 -2.478 0.718
H8 -0.847 -2.363 -0.461

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21581.35742.56992.01442.01453.17493.1328
C21.21582.56991.35743.17493.13282.01442.0145
N31.35742.56993.91651.01401.01424.52164.4190
N42.56991.35743.91654.52164.41901.01401.0142
H52.01443.17491.01404.52161.67815.00345.0085
H62.01453.13281.01424.41901.67815.00855.0203
H73.17492.01444.52161.01405.00345.00851.6781
H83.13282.01454.41901.01425.00855.02031.6781

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 174.133 C1 N3 H5 115.547
C1 N3 H6 115.536 C2 C1 N3 174.133
C2 N4 H7 115.547 C2 N4 H8 115.536
H5 N3 H6 111.662 H7 N4 H8 111.662
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.216      
2 C 0.216      
3 N -0.863      
4 N -0.863      
5 H 0.323      
6 H 0.324      
7 H 0.323      
8 H 0.324      


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 1.475 1.475
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.562 4.146 0.000
y 4.146 -12.972 0.000
z 0.000 0.000 -23.699
Traceless
 xyz
x -5.226 4.146 0.000
y 4.146 10.659 0.000
z 0.000 0.000 -5.433
Polar
3z2-r2-10.865
x2-y2-10.590
xy4.146
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.121 0.246 0.000
y 0.246 9.731 0.000
z 0.000 0.000 3.109


<r2> (average value of r2) Å2
<r2> 97.340
(<r2>)1/2 9.866