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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: HF/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 HF/6-311G*
 hartrees
Energy at 0K-186.917668
Energy at 298.15K-186.922183
HF Energy-186.917668
Nuclear repulsion energy102.837460
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/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A 3879 3509 19.35      
2 A 3792 3429 4.10      
3 A 2537 2295 0.08      
4 A 1844 1668 15.33      
5 A 1338 1210 0.14      
6 A 867 784 10.17      
7 A 693 626 153.14      
8 A 527 477 10.88      
9 A 396 358 30.68      
10 A 256 232 24.02      
11 B 3880 3509 18.88      
12 B 3793 3430 12.83      
13 B 1845 1669 48.04      
14 B 1415 1279 99.72      
15 B 1339 1211 0.18      
16 B 747 675 389.80      
17 B 532 481 38.96      
18 B 256 232 25.92      

Unscaled Zero Point Vibrational Energy (zpe) 14966.9 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 13536.0 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 HF/6-311G*
ABC
5.29339 0.12132 0.12130

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.001 0.593 0.051
C2 0.001 -0.593 0.051
N3 0.001 1.940 -0.084
N4 -0.001 -1.940 -0.084
H5 -0.323 2.436 0.715
H6 0.851 2.319 -0.433
H7 0.323 -2.436 0.715
H8 -0.851 -2.319 -0.433

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.18581.35422.53681.98511.98493.11743.0720
C21.18582.53681.35423.11743.07201.98511.9849
N31.35422.53683.88060.99430.99454.46014.3576
N42.53681.35423.88064.46014.35760.99430.9945
H51.98513.11740.99434.46011.64634.91434.9199
H61.98493.07200.99454.35761.64634.91994.9407
H73.11741.98514.46010.99434.91434.91991.6463
H83.07201.98494.35760.99454.91994.94071.6463

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 174.258 C1 N3 H5 114.533
C1 N3 H6 114.501 C2 C1 N3 174.258
C2 N4 H7 114.533 C2 N4 H8 114.501
H5 N3 H6 111.735 H7 N4 H8 111.735
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.319      
2 C 0.319      
3 N -1.022      
4 N -1.022      
5 H 0.351      
6 H 0.352      
7 H 0.351      
8 H 0.352      


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 1.734 1.734
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.631 4.766 0.000
y 4.766 -14.752 0.000
z 0.000 0.000 -23.789
Traceless
 xyz
x -4.360 4.766 0.000
y 4.766 8.958 0.000
z 0.000 0.000 -4.597
Polar
3z2-r2-9.194
x2-y2-8.879
xy4.766
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.943 0.208 0.000
y 0.208 7.901 0.000
z 0.000 0.000 2.939


<r2> (average value of r2) Å2
<r2> 95.940
(<r2>)1/2 9.795