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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: mPW1PW91/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-132.667209
Energy at 298.15K-132.669268
HF Energy-132.667209
Nuclear repulsion energy59.360196
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/aug-cc-pVDZ
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 3418 14.09      
2 A' 3516 3369 98.66      
3 A' 2269 2174 133.59      
4 A' 1623 1556 26.39      
5 A' 1101 1056 16.87      
6 A' 594 569 163.62      
7 A' 483 463 122.53      
8 A' 391 374 16.82      
9 A" 3662 3510 40.39      
10 A" 1189 1140 0.45      
11 A" 659 631 43.84      
12 A" 347 333 7.68      

Unscaled Zero Point Vibrational Energy (zpe) 9700.5 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 9296.0 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/aug-cc-pVDZ
ABC
10.26019 0.31102 0.30438

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.005 1.369 0.000
C2 0.000 0.157 0.000
N3 0.085 -1.189 0.000
H4 -0.025 2.436 0.000
H5 -0.268 -1.635 0.837
H6 -0.268 -1.635 -0.837

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21192.56031.06733.12963.1296
C21.21191.34952.27911.99621.9962
N32.56031.34953.62751.01191.0119
H41.06732.27913.62754.16354.1635
H53.12961.99621.01194.16351.6742
H63.12961.99621.01194.16351.6742

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.652 C2 C1 H4 179.213
C2 N3 H5 114.666 C2 N3 H6 114.666
H5 N3 H6 111.644
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.788      
2 C -0.254      
3 N -0.156      
4 H -0.407      
5 H 0.015      
6 H 0.015      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.030 -1.464 0.000 1.790
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.665 1.943 0.000
y 1.943 -12.415 0.000
z 0.000 0.000 -17.265
Traceless
 xyz
x -5.825 1.943 0.000
y 1.943 6.550 0.000
z 0.000 0.000 -0.725
Polar
3z2-r2-1.449
x2-y2-8.250
xy1.943
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.819 0.002 0.000
y 0.002 7.458 0.000
z 0.000 0.000 3.780


<r2> (average value of r2) Å2
<r2> 44.662
(<r2>)1/2 6.683