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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: SVWN/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at SVWN/cc-pVTZ
 hartrees
Energy at 0K-187.096545
Energy at 298.15K-187.100213
HF Energy-187.096545
Nuclear repulsion energy102.580962
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 SVWN/cc-pVTZ
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 3539 3505 28.61      
2 A 3456 3422 1.18      
3 A 2334 2311 0.25      
4 A 1567 1552 3.83      
5 A 1122 1111 0.54      
6 A 848 840 0.20      
7 A 497 492 10.81      
8 A 428 424 1.78      
9 A 341 337 167.25      
10 A 172 170 28.09      
11 B 3539 3504 27.86      
12 B 3462 3429 4.96      
13 B 1576 1561 48.16      
14 B 1435 1421 114.49      
15 B 1122 1111 0.56      
16 B 433 428 24.69      
17 B 387 383 249.30      
18 B 172 170 28.82      

Unscaled Zero Point Vibrational Energy (zpe) 13214.2 cm-1
Scaled (by 0.9903) Zero Point Vibrational Energy (zpe) 13086.0 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 SVWN/cc-pVTZ
ABC
5.38514 0.12120 0.12120

See section I.F.4 to change rotational constant units
Geometric Data calculated at SVWN/cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.005 0.605 0.038
C2 -0.005 -0.605 0.038
N3 -0.005 1.943 -0.072
N4 0.005 -1.943 -0.072
H5 -0.358 2.453 0.735
H6 0.838 2.363 -0.460
H7 0.358 -2.453 0.735
H8 -0.838 -2.363 -0.460

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21021.34252.55052.00782.00783.15633.1249
C21.21022.55051.34253.15633.12492.00782.0078
N31.34252.55053.88611.01761.01784.48404.4027
N42.55051.34253.88614.48404.40271.01761.0178
H52.00783.15631.01764.48401.69284.95794.9847
H62.00783.12491.01784.40271.69284.98475.0133
H73.15632.00784.48401.01764.95794.98471.6928
H83.12492.00784.40271.01784.98475.01331.6928

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 175.233 C1 N3 H5 115.903
C1 N3 H6 115.879 C2 C1 N3 175.233
C2 N4 H7 115.903 C2 N4 H8 115.879
H5 N3 H6 112.539 H7 N4 H8 112.539
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at SVWN/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.119      
2 C -0.119      
3 N -0.215      
4 N -0.215      
5 H 0.167      
6 H 0.168      
7 H 0.167      
8 H 0.168      


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 0.919 0.919
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.927 2.722 0.000
y 2.722 -11.977 0.000
z 0.000 0.000 -24.001
Traceless
 xyz
x -5.937 2.722 0.000
y 2.722 11.987 0.000
z 0.000 0.000 -6.050
Polar
3z2-r2-12.099
x2-y2-11.950
xy2.722
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.858 0.175 0.000
y 0.175 10.533 0.000
z 0.000 0.000 3.852


<r2> (average value of r2) Å2
<r2> 96.073
(<r2>)1/2 9.802