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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: HF/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-131.867118
Energy at 298.15K-131.869616
HF Energy-131.867118
Nuclear repulsion energy60.062002
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(2df,p)
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' 3772 3415 25.52      
2 A' 3660 3314 89.47      
3 A' 2426 2197 84.33      
4 A' 1778 1610 30.35      
5 A' 1129 1022 13.29      
6 A' 739 669 218.37      
7 A' 648 587 79.33      
8 A' 513 465 40.23      
9 A" 3866 3501 39.48      
10 A" 1311 1187 0.09      
11 A" 833 754 36.81      
12 A" 428 388 6.61      

Unscaled Zero Point Vibrational Energy (zpe) 10551.2 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 9554.1 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(2df,p)
ABC
10.41747 0.31768 0.31115

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.101 1.345 0.000
C2 0.000 0.167 0.000
N3 0.164 -1.176 0.000
H4 -0.190 2.395 0.000
H5 -0.178 -1.621 0.823
H6 -0.178 -1.621 -0.823

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.18252.53511.05293.07923.0792
C21.18251.35312.23541.97641.9764
N32.53511.35313.58790.99650.9965
H41.05292.23543.58794.09884.0988
H53.07921.97640.99654.09881.6463
H63.07921.97640.99654.09881.6463

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 177.913 C2 C1 H4 179.945
C2 N3 H5 113.664 C2 N3 H6 113.664
H5 N3 H6 111.399
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.241      
2 C 0.095      
3 N -0.690      
4 H 0.234      
5 H 0.301      
6 H 0.301      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.112 -1.247 0.000 1.671
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.068 1.558 0.000
y 1.558 -11.770 0.000
z 0.000 0.000 -16.745
Traceless
 xyz
x -5.811 1.558 0.000
y 1.558 6.637 0.000
z 0.000 0.000 -0.826
Polar
3z2-r2-1.651
x2-y2-8.298
xy1.558
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.176 -0.204 0.000
y -0.204 5.894 0.000
z 0.000 0.000 2.493


<r2> (average value of r2) Å2
<r2> 43.512
(<r2>)1/2 6.596