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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: mPW1PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/6-31G*
 hartrees
Energy at 0K-132.640381
Energy at 298.15K-132.642460
HF Energy-132.640381
Nuclear repulsion energy59.411448
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 mPW1PW91/6-31G*
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' 3567 3382 11.15      
2 A' 3533 3351 81.45      
3 A' 2289 2171 87.98      
4 A' 1683 1596 31.59      
5 A' 1110 1052 12.91      
6 A' 663 628 246.14      
7 A' 492 466 89.74      
8 A' 362 344 33.86      
9 A" 3659 3470 28.64      
10 A" 1225 1162 0.23      
11 A" 671 636 37.40      
12 A" 366 347 4.37      

Unscaled Zero Point Vibrational Energy (zpe) 9809.8 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 9302.6 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 mPW1PW91/6-31G*
ABC
10.20675 0.31151 0.30501

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.055 1.366 0.000
C2 0.000 0.159 0.000
N3 0.128 -1.186 0.000
H4 -0.119 2.428 0.000
H5 -0.224 -1.638 0.834
H6 -0.224 -1.638 -0.834

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20782.55911.06393.12233.1223
C21.20781.35202.27171.99421.9942
N32.55911.35203.62291.01201.0120
H41.06392.27173.62294.15204.1520
H53.12231.99421.01204.15201.6684
H63.12231.99421.01204.15201.6684

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 177.169 C2 C1 H4 179.167
C2 N3 H5 114.272 C2 N3 H6 114.272
H5 N3 H6 111.038
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.311      
2 C 0.260      
3 N -0.892      
4 H 0.220      
5 H 0.362      
6 H 0.362      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.246 -1.424 0.000 1.892
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.869 1.897 0.000
y 1.897 -11.552 0.000
z 0.000 0.000 -16.502
Traceless
 xyz
x -5.842 1.897 0.000
y 1.897 6.634 0.000
z 0.000 0.000 -0.792
Polar
3z2-r2-1.583
x2-y2-8.318
xy1.897
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.698 -0.114 0.000
y -0.114 6.247 0.000
z 0.000 0.000 2.151


<r2> (average value of r2) Å2
<r2> 44.081
(<r2>)1/2 6.639