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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: wB97X-D/aug-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/aug-cc-pVDZ
 hartrees
Energy at 0K-188.001211
Energy at 298.15K-188.005098
HF Energy-188.001211
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/aug-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 3676 3519 30.47      
2 A 3578 3425 1.24      
3 A 2409 2306 0.11      
4 A 1638 1568 7.70      
5 A 1188 1137 0.31      
6 A 835 799 1.33      
7 A 506 484 124.78      
8 A 406 389 0.00      
9 A 403 386 31.55      
10 A 182 174 22.48      
11 B 3676 3519 29.62      
12 B 3580 3427 11.68      
13 B 1641 1571 36.88      
14 B 1387 1327 135.19      
15 B 1188 1137 0.28      
16 B 561 537 268.95      
17 B 409 391 25.10      
18 B 184 176 24.49      

Unscaled Zero Point Vibrational Energy (zpe) 13721.9 cm-1
Scaled (by 0.9573) Zero Point Vibrational Energy (zpe) 13136.0 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/aug-cc-pVDZ
ABC
5.21059 0.11913 0.11911

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.005 0.607 0.039
C2 -0.005 -0.607 0.039
N3 -0.005 1.961 -0.074
N4 0.005 -1.961 -0.074
H5 -0.347 2.461 0.737
H6 0.841 2.371 -0.449
H7 0.347 -2.461 0.737
H8 -0.841 -2.371 -0.449

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21401.35852.57022.01192.01213.16473.1342
C21.21402.57021.35853.16473.13422.01192.0121
N31.35852.57023.92141.01211.01234.50904.4276
N42.57021.35853.92144.50904.42761.01211.0123
H52.01193.16471.01214.50901.68094.97024.9998
H62.01213.13421.01234.42761.68094.99985.0315
H73.16472.01194.50901.01214.97024.99981.6809
H83.13422.01214.42761.01234.99985.03151.6809

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 175.139 C1 N3 H5 115.360
C1 N3 H6 115.368 C2 C1 N3 175.139
C2 N4 H7 115.360 C2 N4 H8 115.368
H5 N3 H6 112.257 H7 N4 H8 112.257
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.070      
2 C 0.070      
3 N -0.060      
4 N -0.060      
5 H -0.011      
6 H 0.001      
7 H -0.011      
8 H 0.001      


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 1.336 1.336
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.052 3.900 0.000
y 3.900 -14.298 0.000
z 0.000 0.000 -24.137
Traceless
 xyz
x -4.834 3.900 0.000
y 3.900 9.796 0.000
z 0.000 0.000 -4.962
Polar
3z2-r2-9.924
x2-y2-9.753
xy3.900
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.784 0.133 0.000
y 0.133 10.294 0.000
z 0.000 0.000 4.778


<r2> (average value of r2) Å2
<r2> 97.700
(<r2>)1/2 9.884