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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: B3PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-311G**
 hartrees
Energy at 0K-132.669726
Energy at 298.15K-132.671897
HF Energy-132.669726
Nuclear repulsion energy59.570302
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 B3PW91/6-311G**
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' 3556 3425 14.64      
2 A' 3497 3367 90.78      
3 A' 2257 2174 110.56      
4 A' 1638 1578 32.63      
5 A' 1098 1058 15.74      
6 A' 603 581 199.36      
7 A' 501 483 133.77      
8 A' 435 419 10.59      
9 A" 3643 3508 33.26      
10 A" 1198 1154 0.08      
11 A" 712 685 37.69      
12 A" 375 362 9.20      

Unscaled Zero Point Vibrational Energy (zpe) 9756.5 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 9396.5 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 B3PW91/6-311G**
ABC
10.30224 0.31338 0.30658

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.034 1.363 0.000
C2 0.000 0.159 0.000
N3 0.106 -1.183 0.000
H4 -0.073 2.424 0.000
H5 -0.232 -1.637 0.838
H6 -0.232 -1.637 -0.838

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20422.55031.06203.12073.1207
C21.20421.34692.26621.99521.9952
N32.55031.34693.61221.01071.0107
H41.06202.26623.61224.14964.1496
H53.12071.99521.01074.14961.6752
H63.12071.99521.01074.14961.6752

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 177.114 C2 C1 H4 179.579
C2 N3 H5 114.875 C2 N3 H6 114.875
H5 N3 H6 111.927
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.016      
2 C 0.023      
3 N -0.581      
4 H 0.109      
5 H 0.232      
6 H 0.232      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.084 -1.588 0.000 1.923
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.217 1.801 0.000
y 1.801 -11.859 0.000
z 0.000 0.000 -16.868
Traceless
 xyz
x -5.853 1.801 0.000
y 1.801 6.684 0.000
z 0.000 0.000 -0.830
Polar
3z2-r2-1.661
x2-y2-8.358
xy1.801
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.199 -0.049 0.000
y -0.049 6.618 0.000
z 0.000 0.000 2.505


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