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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-188.028267
Energy at 298.15K-188.032228
HF Energy-188.028267
Nuclear repulsion energy101.674310
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 3581 3431 9.32      
2 A 3500 3353 2.08      
3 A 2377 2278 0.27      
4 A 1684 1613 10.50      
5 A 1212 1162 0.24      
6 A 832 797 2.96      
7 A 576 552 157.93      
8 A 416 398 17.19      
9 A 406 388 11.22      
10 A 187 179 19.23      
11 B 3580 3430 8.80      
12 B 3503 3356 3.24      
13 B 1684 1614 19.85      
14 B 1384 1326 94.49      
15 B 1213 1162 0.26      
16 B 635 609 377.43      
17 B 403 386 17.61      
18 B 187 179 20.15      

Unscaled Zero Point Vibrational Energy (zpe) 13680.2 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 13105.7 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
5.16928 0.11888 0.11886

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 0.006 0.607 0.032
C2 -0.006 -0.607 0.032
N3 -0.006 1.963 -0.071
N4 0.006 -1.963 -0.071
H5 -0.340 2.461 0.747
H6 0.843 2.380 -0.439
H7 0.340 -2.461 0.747
H8 -0.843 -2.380 -0.439

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21471.36012.57292.01642.01623.16803.1410
C21.21472.57291.36013.16803.14102.01642.0162
N31.36012.57293.92701.01441.01464.51254.4386
N42.57291.36013.92704.51254.43861.01441.0146
H52.01643.16801.01444.51251.67764.96835.0090
H62.01623.14101.01464.43861.67765.00905.0497
H73.16802.01644.51251.01444.96835.00901.6776
H83.14102.01624.43861.01465.00905.04971.6776

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 175.529 C1 N3 H5 115.483
C1 N3 H6 115.450 C2 C1 N3 175.529
C2 N4 H7 115.483 C2 N4 H8 115.450
H5 N3 H6 111.552 H7 N4 H8 111.552
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 0.180      
2 C 0.180      
3 N -0.839      
4 N -0.839      
5 H 0.328      
6 H 0.330      
7 H 0.328      
8 H 0.330      


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 1.629 1.629
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.080 4.437 0.000
y 4.437 -13.573 0.000
z 0.000 0.000 -23.201
Traceless
 xyz
x -4.694 4.437 0.000
y 4.437 9.568 0.000
z 0.000 0.000 -4.874
Polar
3z2-r2-9.748
x2-y2-9.508
xy4.437
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.691 0.273 0.000
y 0.273 8.999 0.000
z 0.000 0.000 2.685


<r2> (average value of r2) Å2
<r2> 97.328
(<r2>)1/2 9.865