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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-132.633662
Energy at 298.15K-132.635717
HF Energy-132.633662
Nuclear repulsion energy59.365219
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 B3PW91/6-31G**
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' 3565 3416 12.37      
2 A' 3512 3366 85.27      
3 A' 2272 2177 89.93      
4 A' 1642 1573 29.74      
5 A' 1104 1058 13.67      
6 A' 622 596 223.89      
7 A' 486 466 101.84      
8 A' 363 348 31.82      
9 A" 3662 3510 29.82      
10 A" 1197 1147 0.25      
11 A" 667 639 36.85      
12 A" 365 350 4.63      

Unscaled Zero Point Vibrational Energy (zpe) 9727.3 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 9322.6 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 B3PW91/6-31G**
ABC
10.23241 0.31099 0.30440

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.054 1.368 0.000
C2 0.000 0.159 0.000
N3 0.125 -1.187 0.000
H4 -0.116 2.430 0.000
H5 -0.218 -1.641 0.837
H6 -0.218 -1.641 -0.837

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21052.56121.06433.12723.1272
C21.21051.35152.27471.99641.9964
N32.56121.35153.62541.01191.0119
H41.06432.27473.62544.15764.1576
H53.12721.99641.01194.15761.6734
H63.12721.99641.01194.15761.6734

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 177.247 C2 C1 H4 179.254
C2 N3 H5 114.524 C2 N3 H6 114.524
H5 N3 H6 111.552
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.256      
2 C 0.267      
3 N -0.781      
4 H 0.178      
5 H 0.296      
6 H 0.296      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.173 -1.493 0.000 1.899
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.802 1.794 0.000
y 1.794 -11.566 0.000
z 0.000 0.000 -16.473
Traceless
 xyz
x -5.783 1.794 0.000
y 1.794 6.572 0.000
z 0.000 0.000 -0.789
Polar
3z2-r2-1.577
x2-y2-8.236
xy1.794
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.725 -0.108 0.000
y -0.108 6.362 0.000
z 0.000 0.000 2.196


<r2> (average value of r2) Å2
<r2> 44.129
(<r2>)1/2 6.643