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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: B2PLYP/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 B2PLYP/6-311G*
 hartrees
Energy at 0K-187.886073
Energy at 298.15K-187.890134
HF Energy-187.686520
Nuclear repulsion energy101.872073
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 B2PLYP/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 3648 3648 11.77      
2 A 3562 3562 2.10      
3 A 2364 2364 0.28      
4 A 1721 1721 13.92      
5 A 1238 1238 0.11      
6 A 822 822 5.73      
7 A 611 611 155.94      
8 A 416 416 0.08      
9 A 401 401 30.26      
10 A 198 198 21.45      
11 B 3648 3648 11.26      
12 B 3565 3565 3.60      
13 B 1721 1721 32.41      
14 B 1373 1373 94.83      
15 B 1237 1237 0.15      
16 B 669 669 385.60      
17 B 413 413 15.69      
18 B 198 198 23.98      

Unscaled Zero Point Vibrational Energy (zpe) 13901.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13901.2 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 B2PLYP/6-311G*
ABC
5.18924 0.11922 0.11920

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-311G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.002 0.605 0.058
C2 -0.002 -0.605 0.058
N3 -0.002 1.956 -0.087
N4 0.002 -1.956 -0.087
H5 -0.336 2.471 0.714
H6 0.849 2.349 -0.458
H7 0.336 -2.471 0.714
H8 -0.849 -2.349 -0.458

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21051.35842.56532.00642.00643.16313.1179
C21.21052.56531.35843.16313.11792.00642.0064
N31.35842.56533.91191.00881.00904.51154.4035
N42.56531.35843.91194.51154.40351.00881.0090
H52.00643.16311.00884.51151.67134.98744.9874
H62.00643.11791.00904.40351.67134.98744.9963
H73.16312.00644.51151.00884.98744.98741.6713
H83.11792.00644.40351.00904.98744.99631.6713

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 173.870 C1 N3 H5 115.100
C1 N3 H6 115.084 C2 C1 N3 173.870
C2 N4 H7 115.100 C2 N4 H8 115.084
H5 N3 H6 111.838 H7 N4 H8 111.838
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.226      
2 C 0.226      
3 N -0.896      
4 N -0.896      
5 H 0.334      
6 H 0.336      
7 H 0.334      
8 H 0.336      


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 1.620 1.620
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.688 4.497 0.000
y 4.497 -13.926 0.000
z 0.000 0.000 -23.817
Traceless
 xyz
x -4.817 4.497 0.000
y 4.497 9.827 0.000
z 0.000 0.000 -5.010
Polar
3z2-r2-10.020
x2-y2-9.762
xy4.497
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.049 0.235 0.000
y 0.235 8.915 0.000
z 0.000 0.000 3.040


<r2> (average value of r2) Å2
<r2> 97.342
(<r2>)1/2 9.866