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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/6-31+G**
 hartrees
Energy at 0K-188.056696
Energy at 298.15K-188.060486
HF Energy-188.056696
Nuclear repulsion energy101.711407
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 B3LYPultrafine/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 3639 3503 32.11      
2 A 3545 3413 1.11      
3 A 2354 2267 0.34      
4 A 1654 1592 8.42      
5 A 1180 1136 0.27      
6 A 832 801 1.27      
7 A 468 451 174.25      
8 A 434 418 2.09      
9 A 403 388 28.73      
10 A 172 165 27.58      
11 B 3638 3503 30.94      
12 B 3549 3416 9.54      
13 B 1657 1595 35.34      
14 B 1382 1331 144.42      
15 B 1180 1136 0.29      
16 B 517 497 308.34      
17 B 403 388 24.78      
18 B 173 166 28.66      

Unscaled Zero Point Vibrational Energy (zpe) 13589.1 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 13082.2 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 B3LYPultrafine/6-31+G**
ABC
5.30579 0.11876 0.11875

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31+G**

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 0.608 0.031
C2 -0.006 -0.608 0.031
N3 -0.006 1.966 -0.067
N4 0.006 -1.966 -0.067
H5 -0.358 2.469 0.739
H6 0.829 2.391 -0.453
H7 0.358 -2.469 0.739
H8 -0.829 -2.391 -0.453

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21561.36152.57532.02382.02353.17643.1507
C21.21562.57531.36153.17643.15072.02382.0235
N31.36152.57533.93131.01321.01354.52164.4510
N42.57531.36153.93134.52164.45101.01321.0135
H52.02383.17641.01324.52161.68384.98905.0263
H62.02353.15071.01354.45101.68385.02635.0623
H73.17642.02384.52161.01324.98905.02631.6838
H83.15072.02354.45101.01355.02635.06231.6838

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 175.736 C1 N3 H5 116.136
C1 N3 H6 116.095 C2 C1 N3 175.736
C2 N4 H7 116.136 C2 N4 H8 116.095
H5 N3 H6 112.368 H7 N4 H8 112.368
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.173      
2 C 0.173      
3 N -0.777      
4 N -0.777      
5 H 0.301      
6 H 0.303      
7 H 0.301      
8 H 0.303      


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 1.329 1.329
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.344 3.790 0.000
y 3.790 -13.743 0.000
z 0.000 0.000 -24.422
Traceless
 xyz
x -5.262 3.790 0.000
y 3.790 10.640 0.000
z 0.000 0.000 -5.378
Polar
3z2-r2-10.757
x2-y2-10.601
xy3.790
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.877 0.117 0.000
y 0.117 9.984 0.000
z 0.000 0.000 3.869


<r2> (average value of r2) Å2
<r2> 98.075
(<r2>)1/2 9.903