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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: B1B95/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B1B95/6-311G*
 hartrees
Energy at 0K-187.994988
Energy at 298.15K-187.999090
HF Energy-187.994988
Nuclear repulsion energy102.446236
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 B1B95/6-311G*
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 3660 3508 12.63      
2 A 3575 3427 2.25      
3 A 2394 2294 0.35      
4 A 1705 1634 11.17      
5 A 1220 1170 0.29      
6 A 841 806 1.78      
7 A 537 515 170.05      
8 A 446 427 3.97      
9 A 442 423 26.65      
10 A 208 200 25.16      
11 B 3659 3508 11.99      
12 B 3578 3430 3.37      
13 B 1707 1637 35.79      
14 B 1406 1348 114.82      
15 B 1220 1170 0.39      
16 B 596 571 362.57      
17 B 445 426 25.15      
18 B 209 200 26.79      

Unscaled Zero Point Vibrational Energy (zpe) 13923.3 cm-1
Scaled (by 0.9586) Zero Point Vibrational Energy (zpe) 13346.9 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 B1B95/6-311G*
ABC
5.28653 0.12066 0.12064

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.002 0.603 0.059
C2 -0.002 -0.603 0.059
N3 -0.002 1.945 -0.086
N4 0.002 -1.945 -0.086
H5 -0.339 2.463 0.709
H6 0.848 2.339 -0.460
H7 0.339 -2.463 0.709
H8 -0.848 -2.339 -0.460

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.20501.35002.55142.00001.99993.15183.1050
C21.20502.55141.35003.15183.10502.00001.9999
N31.35002.55143.88941.00761.00784.49194.3821
N42.55141.35003.88944.49194.38211.00761.0078
H52.00003.15181.00764.49191.67014.97254.9681
H61.99993.10501.00784.38211.67014.96814.9752
H73.15182.00004.49191.00764.97254.96811.6701
H83.10501.99994.38211.00784.96814.97521.6701

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 173.807 C1 N3 H5 115.284
C1 N3 H6 115.260 C2 C1 N3 173.807
C2 N4 H7 115.284 C2 N4 H8 115.260
H5 N3 H6 111.926 H7 N4 H8 111.926
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.240      
2 C 0.240      
3 N -0.916      
4 N -0.916      
5 H 0.337      
6 H 0.339      
7 H 0.337      
8 H 0.339      


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 -23.478 4.139 0.000
y 4.139 -13.012 0.000
z 0.000 0.000 -23.602
Traceless
 xyz
x -5.172 4.139 0.000
y 4.139 10.528 0.000
z 0.000 0.000 -5.357
Polar
3z2-r2-10.713
x2-y2-10.466
xy4.139
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.028 0.215 0.000
y 0.215 9.118 0.000
z 0.000 0.000 3.021


<r2> (average value of r2) Å2
<r2> 96.183
(<r2>)1/2 9.807