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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: BLYP/aug-cc-pVTZ

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-pVTZ
 hartrees
Energy at 0K-188.059451
Energy at 298.15K-188.063184
HF Energy-188.059451
Nuclear repulsion energy101.521514
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-pVTZ
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 3479 3467 16.42      
2 A 3408 3397 0.18      
3 A 2274 2266 0.35      
4 A 1611 1606 5.36      
5 A 1161 1157 0.04      
6 A 802 799 2.26      
7 A 486 484 124.92      
8 A 425 424 9.81      
9 A 385 383 9.33      
10 A 157 156 21.58      
11 B 3478 3467 15.81      
12 B 3412 3401 0.95      
13 B 1612 1606 12.58      
14 B 1332 1327 122.49      
15 B 1161 1157 0.06      
16 B 542 540 254.68      
17 B 385 384 12.95      
18 B 157 157 23.36      

Unscaled Zero Point Vibrational Energy (zpe) 13132.7 cm-1
Scaled (by 0.9966) Zero Point Vibrational Energy (zpe) 13088.1 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-pVTZ
ABC
5.23118 0.11848 0.11847

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.004 0.607 0.044
C2 -0.004 -0.607 0.044
N3 -0.004 1.965 -0.075
N4 0.004 -1.965 -0.075
H5 -0.354 2.483 0.727
H6 0.836 2.386 -0.462
H7 0.354 -2.483 0.727
H8 -0.836 -2.386 -0.462

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21441.36332.57522.02782.02813.18363.1500
C21.21442.57521.36333.18363.15002.02782.0281
N31.36332.57523.93051.01641.01674.53374.4471
N42.57521.36333.93054.53374.44711.01641.0167
H52.02783.18361.01644.53371.68545.01555.0349
H62.02813.15001.01674.44711.68545.03495.0570
H73.18362.02784.53371.01645.01555.03491.6854
H83.15002.02814.44711.01675.03495.05701.6854

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 174.934 C1 N3 H5 116.122
C1 N3 H6 116.132 C2 C1 N3 174.934
C2 N4 H7 116.122 C2 N4 H8 116.132
H5 N3 H6 111.992 H7 N4 H8 111.992
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.211      
2 C 0.211      
3 N -0.416      
4 N -0.416      
5 H 0.101      
6 H 0.105      
7 H 0.101      
8 H 0.105      


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 1.171 1.171
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.460 3.508 0.000
y 3.508 -14.790 0.000
z 0.000 0.000 -24.574
Traceless
 xyz
x -4.779 3.508 0.000
y 3.508 9.727 0.000
z 0.000 0.000 -4.949
Polar
3z2-r2-9.898
x2-y2-9.671
xy3.508
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.148 0.177 0.000
y 0.177 11.581 0.000
z 0.000 0.000 5.139


<r2> (average value of r2) Å2
<r2> 98.558
(<r2>)1/2 9.928