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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-132.507597
Energy at 298.15K-132.509424
HF Energy-132.507597
Nuclear repulsion energy58.910443
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' 3442 3393 60.11      
2 A' 3424 3375 16.94      
3 A' 2205 2173 78.51      
4 A' 1623 1600 24.63      
5 A' 1078 1062 9.44      
6 A' 643 634 243.15      
7 A' 468 461 50.05      
8 A' 248 244 42.18      
9 A" 3510 3460 16.92      
10 A" 1183 1166 0.17      
11 A" 604 596 32.47      
12 A" 329 325 3.62      

Unscaled Zero Point Vibrational Energy (zpe) 9378.5 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 9244.4 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
9.94573 0.30662 0.30034

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 0.075 1.378 0.000
C2 0.000 0.158 0.000
N3 0.035 -1.201 0.000
H4 0.036 2.449 0.000
H5 -0.364 -1.628 0.840
H6 -0.364 -1.628 -0.840

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.22182.57881.07213.15123.1512
C21.22181.35952.29122.00682.0068
N32.57881.35953.64991.02311.0231
H41.07212.29123.64994.18164.1816
H53.15122.00681.02314.18161.6798
H63.15122.00681.02314.18161.6798

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 175.027 C2 C1 H4 174.417
C2 N3 H5 114.023 C2 N3 H6 114.023
H5 N3 H6 110.363
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 -0.312      
2 C 0.274      
3 N -0.824      
4 H 0.178      
5 H 0.342      
6 H 0.342      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.423 -1.424 0.000 2.013
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.531 2.330 0.000
y 2.330 -12.038 0.000
z 0.000 0.000 -16.574
Traceless
 xyz
x -5.225 2.330 0.000
y 2.330 6.015 0.000
z 0.000 0.000 -0.790
Polar
3z2-r2-1.580
x2-y2-7.493
xy2.330
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.765 0.339 0.000
y 0.339 6.534 0.000
z 0.000 0.000 2.227


<r2> (average value of r2) Å2
<r2> 44.671
(<r2>)1/2 6.684