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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: BLYP/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 BLYP/aug-cc-pVDZ
 hartrees
Energy at 0K-188.005064
Energy at 298.15K-188.008567
HF Energy-188.005064
Nuclear repulsion energy100.926096
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 BLYP/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 3475 3469 14.62      
2 A 3394 3388 0.23      
3 A 2275 2271 0.00      
4 A 1588 1585 6.04      
5 A 1144 1142 0.07      
6 A 800 798 1.19      
7 A 464 463 128.07      
8 A 421 420 2.17      
9 A 361 360 8.75      
10 A 120 119 18.26      
11 B 3474 3468 14.46      
12 B 3399 3392 1.27      
13 B 1589 1586 12.46      
14 B 1334 1332 116.37      
15 B 1143 1141 0.94      
16 B 523 522 260.20      
17 B 354 353 13.25      
18 B 115 114 19.40      

Unscaled Zero Point Vibrational Energy (zpe) 12986.0 cm-1
Scaled (by 0.9981) Zero Point Vibrational Energy (zpe) 12961.3 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 BLYP/aug-cc-pVDZ
ABC
5.14490 0.11713 0.11711

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.007 0.614 0.032
C2 -0.007 -0.614 0.032
N3 -0.007 1.978 -0.069
N4 0.007 -1.978 -0.069
H5 -0.355 2.484 0.747
H6 0.836 2.409 -0.453
H7 0.355 -2.484 0.747
H8 -0.836 -2.409 -0.453

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.22811.36762.59382.03452.03493.19843.1750
C21.22812.59381.36763.19843.17502.03452.0349
N31.36762.59383.95571.02101.02124.55034.4803
N42.59381.36763.95574.55034.48031.02101.0212
H52.03453.19841.02104.55031.69135.01855.0603
H62.03493.17501.02124.48031.69135.06035.0987
H73.19842.03454.55031.02105.01855.06031.6913
H83.17502.03494.48031.02125.06035.09871.6913

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 175.579 C1 N3 H5 116.047
C1 N3 H6 116.073 C2 C1 N3 175.579
C2 N4 H7 116.047 C2 N4 H8 116.073
H5 N3 H6 111.824 H7 N4 H8 111.824
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.015      
2 C -0.015      
3 N 0.183      
4 N 0.183      
5 H -0.102      
6 H -0.066      
7 H -0.102      
8 H -0.066      


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 1.304 1.304
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.319 3.956 0.000
y 3.956 -15.118 0.000
z 0.000 0.000 -24.582
Traceless
 xyz
x -4.469 3.956 0.000
y 3.956 9.332 0.000
z 0.000 0.000 -4.863
Polar
3z2-r2-9.727
x2-y2-9.201
xy3.956
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.104 0.569 0.000
y 0.569 11.677 0.000
z 0.000 0.000 5.056


<r2> (average value of r2) Å2
<r2> 99.569
(<r2>)1/2 9.978