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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: HF/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/6-31+G**
 hartrees
Energy at 0K-131.863031
Energy at 298.15K-131.865491
HF Energy-131.863031
Nuclear repulsion energy59.883815
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 HF/6-31+G**
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' 3792 3429 36.21      
2 A' 3648 3299 102.53      
3 A' 2404 2174 131.60      
4 A' 1785 1614 40.70      
5 A' 1140 1030 19.47      
6 A' 674 610 267.88      
7 A' 649 587 75.17      
8 A' 503 455 80.08      
9 A" 3898 3525 56.81      
10 A" 1305 1180 0.00      
11 A" 837 757 57.64      
12 A" 426 385 11.78      

Unscaled Zero Point Vibrational Energy (zpe) 10530.4 cm-1
Scaled (by 0.9042) Zero Point Vibrational Energy (zpe) 9521.6 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 HF/6-31+G**
ABC
10.54077 0.31565 0.30885

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.101 1.352 0.000
C2 0.000 0.166 0.000
N3 0.156 -1.177 0.000
H4 -0.182 2.404 0.000
H5 -0.154 -1.634 0.830
H6 -0.154 -1.634 -0.830

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.19032.54241.05573.09953.0995
C21.19031.35242.24591.98801.9880
N32.54241.35243.59790.99670.9967
H41.05572.24593.59794.12294.1229
H53.09951.98800.99674.12291.6593
H63.09951.98800.99674.12291.6593

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 178.211 C2 C1 H4 179.575
C2 N3 H5 114.773 C2 N3 H6 114.773
H5 N3 H6 112.698
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.290      
2 C -0.480      
3 N -0.725      
4 H 0.272      
5 H 0.322      
6 H 0.322      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.110 -1.351 0.000 1.748
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.191 1.605 0.000
y 1.605 -12.131 0.000
z 0.000 0.000 -17.338
Traceless
 xyz
x -6.456 1.605 0.000
y 1.605 7.133 0.000
z 0.000 0.000 -0.677
Polar
3z2-r2-1.354
x2-y2-9.060
xy1.605
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.716 -0.290 0.000
y -0.290 6.483 0.000
z 0.000 0.000 2.723


<r2> (average value of r2) Å2
<r2> 44.194
(<r2>)1/2 6.648