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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: BLYP/TZVP

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/TZVP
 hartrees
Energy at 0K-188.050682
Energy at 298.15K-188.054331
HF Energy-188.050682
Nuclear repulsion energy101.501783
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/TZVP
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 3487 3478 13.24      
2 A 3412 3404 1.06      
3 A 2277 2272 0.64      
4 A 1615 1611 7.17      
5 A 1156 1153 0.58      
6 A 807 804 1.51      
7 A 456 455 53.22      
8 A 434 433 125.02      
9 A 387 386 11.04      
10 A 146 146 26.51      
11 B 3486 3477 12.38      
12 B 3417 3409 1.91      
13 B 1617 1613 18.41      
14 B 1347 1344 115.98      
15 B 1156 1153 0.61      
16 B 495 493 305.42      
17 B 387 386 15.00      
18 B 147 147 27.77      

Unscaled Zero Point Vibrational Energy (zpe) 13114.6 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 13081.8 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 BLYP/TZVP
ABC
5.27381 0.11841 0.11840

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/TZVP

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.005 0.608 0.040
C2 -0.005 -0.608 0.040
N3 -0.005 1.967 -0.072
N4 0.005 -1.967 -0.072
H5 -0.359 2.484 0.730
H6 0.833 2.393 -0.465
H7 0.359 -2.484 0.730
H8 -0.833 -2.393 -0.465

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21681.36332.57782.03112.03093.18803.1565
C21.21682.57781.36333.18803.15652.03112.0309
N31.36332.57783.93401.01771.01804.53714.4552
N42.57781.36333.93404.53714.45521.01771.0180
H52.03113.18801.01774.53711.68975.01935.0431
H62.03093.15651.01804.45521.68975.04315.0672
H73.18802.03114.53711.01775.01935.04311.6897
H83.15652.03094.45521.01805.04315.06721.6897

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 175.210 C1 N3 H5 116.338
C1 N3 H6 116.296 C2 C1 N3 175.210
C2 N4 H7 116.338 C2 N4 H8 116.296
H5 N3 H6 112.198 H7 N4 H8 112.198
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.102      
2 C -0.102      
3 N -0.356      
4 N -0.356      
5 H 0.228      
6 H 0.230      
7 H 0.228      
8 H 0.230      


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 1.227 1.227
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.285 3.543 0.000
y 3.543 -13.491 0.000
z 0.000 0.000 -24.386
Traceless
 xyz
x -5.347 3.543 0.000
y 3.543 10.845 0.000
z 0.000 0.000 -5.498
Polar
3z2-r2-10.997
x2-y2-10.795
xy3.543
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.672 0.174 0.000
y 0.174 10.546 0.000
z 0.000 0.000 3.658


<r2> (average value of r2) Å2
<r2> 98.329
(<r2>)1/2 9.916