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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: B2PLYP/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 B2PLYP/6-31G(2df,p)
 hartrees
Energy at 0K-132.575862
Energy at 298.15K-132.578004
HF Energy-132.413588
Nuclear repulsion energy59.417020
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 B2PLYP/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' 3563 3403 7.93      
2 A' 3546 3386 91.90      
3 A' 2249 2147 72.45      
4 A' 1653 1579 23.45      
5 A' 1079 1031 10.08      
6 A' 689 658 203.04      
7 A' 498 476 81.32      
8 A' 398 380 15.13      
9 A" 3651 3487 29.13      
10 A" 1213 1158 0.03      
11 A" 676 646 34.50      
12 A" 363 347 4.53      

Unscaled Zero Point Vibrational Energy (zpe) 9788.4 cm-1
Scaled (by 0.955) Zero Point Vibrational Energy (zpe) 9347.9 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 B2PLYP/6-31G(2df,p)
ABC
10.14923 0.31131 0.30504

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.035 1.367 0.000
C2 0.000 0.161 0.000
N3 0.116 -1.190 0.000
H4 -0.078 2.424 0.000
H5 -0.262 -1.627 0.829
H6 -0.262 -1.627 -0.829

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20662.56161.05863.11513.1151
C21.20661.35602.26521.98831.9883
N32.56161.35603.62011.01071.0107
H41.05862.26523.62014.13994.1399
H53.11511.98831.01074.13991.6588
H63.11511.98831.01074.13991.6588

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.755 C2 C1 H4 179.322
C2 N3 H5 113.506 C2 N3 H6 113.506
H5 N3 H6 110.297
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.190      
2 C 0.064      
3 N -0.619      
4 H 0.191      
5 H 0.277      
6 H 0.277      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.136 -1.315 0.000 1.738
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.704 1.899 0.000
y 1.899 -12.090 0.000
z 0.000 0.000 -16.655
Traceless
 xyz
x -5.331 1.899 0.000
y 1.899 6.089 0.000
z 0.000 0.000 -0.758
Polar
3z2-r2-1.515
x2-y2-7.613
xy1.899
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.189 -0.017 0.000
y -0.017 6.264 0.000
z 0.000 0.000 2.548


<r2> (average value of r2) Å2
<r2> 44.163
(<r2>)1/2 6.646