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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: BLYP/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/cc-pVTZ
 hartrees
Energy at 0K-188.053578
Energy at 298.15K-188.057386
HF Energy-188.053578
Nuclear repulsion energy101.508264
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/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 3470 3460 9.98      
2 A 3400 3390 0.70      
3 A 2281 2274 0.30      
4 A 1612 1607 6.75      
5 A 1169 1165 0.02      
6 A 802 800 3.07      
7 A 522 520 120.64      
8 A 426 425 13.45      
9 A 388 387 6.84      
10 A 161 160 21.85      
11 B 3470 3459 9.37      
12 B 3404 3394 2.90      
13 B 1612 1607 11.96      
14 B 1333 1329 101.56      
15 B 1169 1165 0.02      
16 B 582 581 294.53      
17 B 388 387 12.14      
18 B 162 162 24.00      

Unscaled Zero Point Vibrational Energy (zpe) 13174.9 cm-1
Scaled (by 0.997) Zero Point Vibrational Energy (zpe) 13135.3 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/cc-pVTZ
ABC
5.18198 0.11851 0.11850

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.004 0.607 0.050
C2 -0.004 -0.607 0.050
N3 -0.004 1.964 -0.080
N4 0.004 -1.964 -0.080
H5 -0.348 2.484 0.723
H6 0.843 2.377 -0.462
H7 0.348 -2.484 0.723
H8 -0.843 -2.377 -0.462

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21481.36242.57432.02392.02423.18213.1439
C21.21482.57431.36243.18213.14392.02392.0242
N31.36242.57433.92721.01641.01664.53274.4373
N42.57431.36243.92724.53274.43731.01641.0166
H52.02393.18211.01644.53271.68335.01575.0271
H62.02423.14391.01664.43731.68335.02715.0437
H73.18212.02394.53271.01645.01575.02711.6833
H83.14392.02424.43731.01665.02715.04371.6833

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 174.497 C1 N3 H5 115.838
C1 N3 H6 115.845 C2 C1 N3 174.497
C2 N4 H7 115.838 C2 N4 H8 115.845
H5 N3 H6 111.782 H7 N4 H8 111.782
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.105      
2 C -0.105      
3 N -0.198      
4 N -0.198      
5 H 0.152      
6 H 0.152      
7 H 0.152      
8 H 0.152      


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 1.248 1.248
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.952 3.668 0.000
y 3.668 -13.911 0.000
z 0.000 0.000 -24.093
Traceless
 xyz
x -4.951 3.668 0.000
y 3.668 10.112 0.000
z 0.000 0.000 -5.161
Polar
3z2-r2-10.322
x2-y2-10.042
xy3.668
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.931 0.264 0.000
y 0.264 10.420 0.000
z 0.000 0.000 3.918


<r2> (average value of r2) Å2
<r2> 98.104
(<r2>)1/2 9.905