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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: LSDA/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at LSDA/STO-3G
 hartrees
Energy at 0K-130.223902
Energy at 298.15K-130.225782
HF Energy-130.223902
Nuclear repulsion energy58.493347
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 LSDA/STO-3G
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' 3672 3288 181.32      
2 A' 3578 3204 18.67      
3 A' 2418 2166 15.67      
4 A' 1725 1545 14.96      
5 A' 1125 1007 3.46      
6 A' 523 469 11.83      
7 A' 501 449 277.81      
8 A' 413 370 8.25      
9 A" 3751 3359 7.93      
10 A" 1244 1114 0.32      
11 A" 740 663 16.24      
12 A" 365 327 3.95      

Unscaled Zero Point Vibrational Energy (zpe) 10027.9 cm-1
Scaled (by 0.8955) Zero Point Vibrational Energy (zpe) 8980.0 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 LSDA/STO-3G
ABC
9.43051 0.30370 0.29728

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.026 1.381 0.000
C2 0.000 0.168 0.000
N3 0.068 -1.208 0.000
H4 0.049 2.459 0.000
H5 -0.341 -1.649 0.861
H6 -0.341 -1.649 -0.861

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21302.58901.07883.17083.1708
C21.21301.37762.29192.03912.0391
N32.58901.37763.66731.04981.0498
H41.07882.29193.66734.21554.2155
H53.17082.03911.04984.21551.7212
H63.17082.03911.04984.21551.7212

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 175.936 C2 C1 H4 179.972
C2 N3 H5 113.597 C2 N3 H6 113.597
H5 N3 H6 110.127
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.182      
2 C 0.001      
3 N -0.384      
4 H 0.122      
5 H 0.221      
6 H 0.221      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.367 -1.274 0.000 1.868
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.571 2.336 0.000
y 2.336 -11.510 0.000
z 0.000 0.000 -15.220
Traceless
 xyz
x -4.205 2.336 0.000
y 2.336 4.885 0.000
z 0.000 0.000 -0.680
Polar
3z2-r2-1.360
x2-y2-6.060
xy2.336
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.447 0.199 0.000
y 0.199 4.330 0.000
z 0.000 0.000 1.069


<r2> (average value of r2) Å2
<r2> 44.284
(<r2>)1/2 6.655