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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: wB97X-D/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at wB97X-D/6-31+G**
 hartrees
Energy at 0K-187.987463
Energy at 298.15K-187.991369
HF Energy-187.987463
Nuclear repulsion energy 
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 wB97X-D/6-31+G**
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 3711 3534 38.48      
2 A 3606 3434 1.84      
3 A 2400 2286 0.35      
4 A 1662 1583 9.48      
5 A 1192 1135 0.18      
6 A 843 802 1.21      
7 A 485 462 151.63      
8 A 421 401 8.38      
9 A 418 398 51.53      
10 A 194 185 28.36      
11 B 3711 3534 37.23      
12 B 3609 3437 19.90      
13 B 1666 1586 52.29      
14 B 1397 1330 146.08      
15 B 1192 1135 0.21      
16 B 528 503 304.65      
17 B 424 404 43.55      
18 B 194 185 30.49      

Unscaled Zero Point Vibrational Energy (zpe) 13826.0 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 13166.5 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 wB97X-D/6-31+G**
ABC
5.28314 0.11922 0.11921

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31+G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.005 0.606 0.031
C2 -0.005 -0.606 0.031
N3 -0.005 1.962 -0.068
N4 0.005 -1.962 -0.068
H5 -0.355 2.459 0.740
H6 0.833 2.380 -0.449
H7 0.355 -2.459 0.740
H8 -0.833 -2.380 -0.449

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21191.35942.56962.01632.01583.16513.1382
C21.21192.56961.35943.16513.13822.01632.0158
N31.35942.56963.92361.01101.01124.50814.4365
N42.56961.35943.92364.50814.43651.01101.0112
H52.01633.16511.01104.50811.68304.96845.0057
H62.01583.13821.01124.43651.68305.00575.0431
H73.16512.01634.50811.01104.96845.00571.6830
H83.13822.01584.43651.01125.00575.04311.6830

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 175.758 C1 N3 H5 115.775
C1 N3 H6 115.717 C2 C1 N3 175.758
C2 N4 H7 115.775 C2 N4 H8 115.717
H5 N3 H6 112.660 H7 N4 H8 112.660
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.139      
2 C 0.139      
3 N -0.770      
4 N -0.770      
5 H 0.315      
6 H 0.316      
7 H 0.315      
8 H 0.316      


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 1.396 1.396
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.051 3.999 0.000
y 3.999 -13.539 0.000
z 0.000 0.000 -24.153
Traceless
 xyz
x -5.205 3.999 0.000
y 3.999 10.563 0.000
z 0.000 0.000 -5.358
Polar
3z2-r2-10.715
x2-y2-10.512
xy3.999
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.763 0.089 0.000
y 0.089 9.607 0.000
z 0.000 0.000 3.759


<r2> (average value of r2) Å2
<r2> 97.533
(<r2>)1/2 9.876