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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: mPW1PW91/TZVP

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/TZVP
 hartrees
Energy at 0K-132.697160
Energy at 298.15K-132.699294
HF Energy-132.697160
Nuclear repulsion energy59.709444
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/TZVP
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' 3589 3424 22.36      
2 A' 3510 3348 101.83      
3 A' 2273 2168 128.94      
4 A' 1651 1575 37.52      
5 A' 1108 1057 19.00      
6 A' 564 538 168.64      
7 A' 495 472 188.04      
8 A' 432 413 11.70      
9 A" 3680 3511 42.61      
10 A" 1198 1143 0.20      
11 A" 708 675 44.00      
12 A" 370 353 10.67      

Unscaled Zero Point Vibrational Energy (zpe) 9788.5 cm-1
Scaled (by 0.954) Zero Point Vibrational Energy (zpe) 9338.2 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/TZVP
ABC
10.47485 0.31479 0.30773

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.026 1.361 0.000
C2 0.000 0.159 0.000
N3 0.094 -1.180 0.000
H4 -0.058 2.421 0.000
H5 -0.221 -1.640 0.839
H6 -0.221 -1.640 -0.839

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20172.54331.06103.12203.1220
C21.20171.34232.26271.99771.9977
N32.54331.34233.60421.00751.0075
H41.06102.26273.60424.15034.1503
H53.12201.99771.00754.15031.6780
H63.12201.99771.00754.15031.6780

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 177.232 C2 C1 H4 179.502
C2 N3 H5 115.722 C2 N3 H6 115.722
H5 N3 H6 112.777
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.531      
2 C 0.217      
3 N -0.328      
4 H 0.141      
5 H 0.250      
6 H 0.250      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.044 -1.581 0.000 1.894
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.600 1.793 0.000
y 1.793 -12.011 0.000
z 0.000 0.000 -16.989
Traceless
 xyz
x -6.100 1.793 0.000
y 1.793 6.783 0.000
z 0.000 0.000 -0.683
Polar
3z2-r2-1.366
x2-y2-8.589
xy1.793
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.568 -0.060 0.000
y -0.060 6.893 0.000
z 0.000 0.000 2.698


<r2> (average value of r2) Å2
<r2> 44.147
(<r2>)1/2 6.644