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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: B3LYPultrafine/6-31G**

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/6-31G**
 hartrees
Energy at 0K-188.041977
Energy at 298.15K-188.045924
HF Energy-188.041977
Nuclear repulsion energy101.773276
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/6-31G**
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 3612 3471 11.37      
2 A 3524 3386 1.99      
3 A 2377 2284 0.24      
4 A 1656 1591 8.94      
5 A 1194 1147 0.24      
6 A 833 800 2.00      
7 A 544 523 156.36      
8 A 419 403 16.75      
9 A 409 393 10.72      
10 A 189 181 19.92      
11 B 3612 3470 10.82      
12 B 3527 3389 2.96      
13 B 1657 1592 20.76      
14 B 1387 1332 98.86      
15 B 1194 1147 0.27      
16 B 601 577 356.86      
17 B 407 392 21.08      
18 B 189 182 20.50      

Unscaled Zero Point Vibrational Energy (zpe) 13664.5 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 13128.8 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/6-31G**
ABC
5.20117 0.11905 0.11904

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.005 0.607 0.031
C2 -0.005 -0.607 0.031
N3 -0.005 1.962 -0.070
N4 0.005 -1.962 -0.070
H5 -0.343 2.457 0.747
H6 0.841 2.378 -0.440
H7 0.343 -2.457 0.747
H8 -0.841 -2.378 -0.440

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21461.35882.57152.01422.01413.16523.1388
C21.21462.57151.35883.16523.13882.01422.0141
N31.35882.57153.92461.01301.01324.50794.4359
N42.57151.35883.92464.50794.43591.01301.0132
H52.01423.16521.01304.50791.67804.96235.0040
H62.01413.13881.01324.43591.67805.00405.0456
H73.16522.01424.50791.01304.96235.00401.6780
H83.13882.01414.43591.01325.00405.04561.6780

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 175.639 C1 N3 H5 115.486
C1 N3 H6 115.459 C2 C1 N3 175.639
C2 N4 H7 115.486 C2 N4 H8 115.459
H5 N3 H6 111.820 H7 N4 H8 111.820
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.207      
2 C 0.207      
3 N -0.737      
4 N -0.737      
5 H 0.264      
6 H 0.266      
7 H 0.264      
8 H 0.266      


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 1.538 1.538
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.063 4.202 0.000
y 4.202 -13.368 0.000
z 0.000 0.000 -23.172
Traceless
 xyz
x -4.793 4.202 0.000
y 4.202 9.749 0.000
z 0.000 0.000 -4.957
Polar
3z2-r2-9.913
x2-y2-9.695
xy4.202
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.727 0.273 0.000
y 0.273 9.061 0.000
z 0.000 0.000 2.723


<r2> (average value of r2) Å2
<r2> 97.158
(<r2>)1/2 9.857