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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-132.649390
Energy at 298.15K-132.651490
HF Energy-132.649390
Nuclear repulsion energy59.459486
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' 3591 3417 14.96      
2 A' 3530 3359 87.34      
3 A' 2288 2177 91.36      
4 A' 1651 1571 30.96      
5 A' 1111 1057 14.21      
6 A' 625 595 223.06      
7 A' 492 468 110.91      
8 A' 387 368 27.38      
9 A" 3691 3512 32.85      
10 A" 1204 1146 0.25      
11 A" 680 647 36.96      
12 A" 371 353 4.93      

Unscaled Zero Point Vibrational Energy (zpe) 9810.5 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 9334.7 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
10.26867 0.31196 0.30533

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 -0.060 1.365 0.000
C2 0.000 0.159 0.000
N3 0.130 -1.185 0.000
H4 -0.126 2.426 0.000
H5 -0.210 -1.639 0.836
H6 -0.210 -1.639 -0.836

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20822.55731.06293.12193.1219
C21.20821.34982.27111.99341.9934
N32.55731.34983.62011.01001.0100
H41.06292.27113.62014.15104.1510
H53.12191.99341.01004.15101.6712
H63.12191.99341.01004.15101.6712

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 177.344 C2 C1 H4 179.327
C2 N3 H5 114.527 C2 N3 H6 114.527
H5 N3 H6 111.660
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 -0.254      
2 C 0.262      
3 N -0.786      
4 H 0.183      
5 H 0.298      
6 H 0.298      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.168 -1.482 0.000 1.887
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.829 1.760 0.000
y 1.760 -11.533 0.000
z 0.000 0.000 -16.476
Traceless
 xyz
x -5.825 1.760 0.000
y 1.760 6.619 0.000
z 0.000 0.000 -0.794
Polar
3z2-r2-1.589
x2-y2-8.296
xy1.760
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.721 -0.129 0.000
y -0.129 6.306 0.000
z 0.000 0.000 2.183


<r2> (average value of r2) Å2
<r2> 44.022
(<r2>)1/2 6.635