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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: PBEPBE/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/6-31G
 hartrees
Energy at 0K-132.481239
Energy at 298.15K-132.482969
HF Energy-132.481239
Nuclear repulsion energy58.929268
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 PBEPBE/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' 3545 3496 21.32      
2 A' 3458 3411 76.47      
3 A' 2215 2184 98.27      
4 A' 1648 1625 45.85      
5 A' 1109 1094 14.94      
6 A' 490 484 1.41      
7 A' 360 355 515.75      
8 A' 278 274 35.49      
9 A" 3655 3605 31.51      
10 A" 1144 1128 8.96      
11 A" 671 662 42.57      
12 A" 346 341 10.41      

Unscaled Zero Point Vibrational Energy (zpe) 9459.1 cm-1
Scaled (by 0.9862) Zero Point Vibrational Energy (zpe) 9328.6 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 PBEPBE/6-31G
ABC
11.12538 0.30585 0.29767

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.018 1.387 0.000
C2 0.000 0.160 0.000
N3 -0.013 -1.187 0.000
H4 0.015 2.457 0.000
H5 -0.016 -1.713 0.867
H6 -0.016 -1.713 -0.867

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.22732.57461.07023.21863.2186
C21.22731.34732.29742.06342.0634
N32.57461.34733.64471.01361.0136
H41.07022.29743.64474.25904.2590
H53.21862.06341.01364.25901.7339
H63.21862.06341.01364.25901.7339

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 179.715 C2 C1 H4 178.981
C2 N3 H5 121.202 C2 N3 H6 121.202
H5 N3 H6 117.596
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.213      
2 C 0.144      
3 N -0.818      
4 H 0.211      
5 H 0.338      
6 H 0.338      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.033 -1.960 0.000 1.961
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.249 0.022 0.000
y 0.022 -10.908 0.000
z 0.000 0.000 -16.284
Traceless
 xyz
x -6.652 0.022 0.000
y 0.022 7.358 0.000
z 0.000 0.000 -0.706
Polar
3z2-r2-1.411
x2-y2-9.340
xy0.022
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.326 0.067 0.000
y 0.067 6.502 0.000
z 0.000 0.000 1.964


<r2> (average value of r2) Å2
<r2> 44.853
(<r2>)1/2 6.697