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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: HF/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 HF/6-31G*
 hartrees
Energy at 0K-131.845571
Energy at 298.15K-131.848054
HF Energy-131.845571
Nuclear repulsion energy59.872535
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 HF/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' 3771 3389 24.44      
2 A' 3673 3300 79.47      
3 A' 2431 2185 83.47      
4 A' 1815 1631 36.66      
5 A' 1138 1022 12.87      
6 A' 752 676 275.32      
7 A' 645 580 91.28      
8 A' 506 455 41.75      
9 A" 3868 3476 36.52      
10 A" 1330 1195 0.03      
11 A" 832 748 40.90      
12 A" 426 383 5.25      

Unscaled Zero Point Vibrational Energy (zpe) 10594.5 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 9519.1 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 HF/6-31G*
ABC
10.38618 0.31555 0.30908

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.129 1.348 0.000
C2 0.000 0.168 0.000
N3 0.186 -1.176 0.000
H4 -0.236 2.398 0.000
H5 -0.148 -1.630 0.825
H6 -0.148 -1.630 -0.825

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.18732.54381.05563.08973.0897
C21.18731.35672.24291.98291.9829
N32.54381.35673.59910.99850.9985
H41.05562.24293.59914.11224.1122
H53.08971.98290.99854.11221.6492
H63.08971.98290.99854.11221.6492

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 178.340 C2 C1 H4 179.565
C2 N3 H5 113.821 C2 N3 H6 113.821
H5 N3 H6 111.347
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.312      
2 C 0.198      
3 N -0.928      
4 H 0.277      
5 H 0.382      
6 H 0.382      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.261 -1.218 0.000 1.754
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.335 1.637 0.000
y 1.637 -11.770 0.000
z 0.000 0.000 -16.783
Traceless
 xyz
x -6.059 1.637 0.000
y 1.637 6.789 0.000
z 0.000 0.000 -0.730
Polar
3z2-r2-1.460
x2-y2-8.565
xy1.637
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.675 -0.318 0.000
y -0.318 5.787 0.000
z 0.000 0.000 2.089


<r2> (average value of r2) Å2
<r2> 43.796
(<r2>)1/2 6.618