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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: wB97X-D/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-187.982951
Energy at 298.15K-187.987032
HF Energy-187.982951
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/cc-pVDZ
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 3645 3473 21.90      
2 A 3554 3385 3.88      
3 A 2419 2304 0.16      
4 A 1638 1560 9.17      
5 A 1212 1155 0.10      
6 A 838 798 2.42      
7 A 609 581 117.72      
8 A 418 398 5.50      
9 A 391 373 24.00      
10 A 201 192 22.03      
11 B 3645 3472 20.75      
12 B 3556 3388 9.38      
13 B 1639 1562 24.56      
14 B 1391 1325 110.22      
15 B 1213 1155 0.07      
16 B 671 639 320.35      
17 B 420 401 21.42      
18 B 203 193 22.60      

Unscaled Zero Point Vibrational Energy (zpe) 13831.6 cm-1
Scaled (by 0.9526) Zero Point Vibrational Energy (zpe) 13176.0 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 wB97X-D/cc-pVDZ
ABC
5.05898 0.11901 0.11899

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.005 0.608 0.035
C2 -0.005 -0.608 0.035
N3 -0.005 1.961 -0.076
N4 0.005 -1.961 -0.076
H5 -0.329 2.451 0.752
H6 0.858 2.361 -0.432
H7 0.329 -2.451 0.752
H8 -0.858 -2.361 -0.432

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21641.35732.57152.00482.00483.15833.1273
C21.21642.57151.35733.15833.12732.00482.0048
N31.35732.57153.92181.01501.01524.50104.4199
N42.57151.35733.92184.50104.41991.01501.0152
H52.00483.15831.01504.50101.67814.94524.9836
H62.00483.12731.01524.41991.67814.98365.0246
H73.15832.00484.50101.01504.94524.98361.6781
H83.12732.00484.41991.01524.98365.02461.6781

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 175.215 C1 N3 H5 114.589
C1 N3 H6 114.577 C2 C1 N3 175.215
C2 N4 H7 114.589 C2 N4 H8 114.577
H5 N3 H6 111.499 H7 N4 H8 111.499
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.031      
2 C -0.031      
3 N -0.208      
4 N -0.208      
5 H 0.119      
6 H 0.120      
7 H 0.119      
8 H 0.120      


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 1.569 1.569
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.163 4.369 0.000
y 4.369 -13.573 0.000
z 0.000 0.000 -23.317
Traceless
 xyz
x -4.718 4.369 0.000
y 4.369 9.667 0.000
z 0.000 0.000 -4.950
Polar
3z2-r2-9.899
x2-y2-9.590
xy4.369
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.939 0.299 0.000
y 0.299 8.935 0.000
z 0.000 0.000 2.935


<r2> (average value of r2) Å2
<r2> 97.154
(<r2>)1/2 9.857