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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: B2PLYP/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 B2PLYP/STO-3G
 hartrees
Energy at 0K-130.772824
Energy at 298.15K-130.774968
HF Energy-130.703975
Nuclear repulsion energy57.937901
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 B2PLYP/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' 3730 3730 144.86      
2 A' 3584 3584 2.23      
3 A' 2406 2406 3.97      
4 A' 1832 1832 8.53      
5 A' 1088 1088 18.59      
6 A' 831 831 127.17      
7 A' 642 642 29.65      
8 A' 404 404 11.30      
9 A" 3765 3765 0.01      
10 A" 1359 1359 0.80      
11 A" 762 762 13.91      
12 A" 366 366 0.89      

Unscaled Zero Point Vibrational Energy (zpe) 10384.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10384.6 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 B2PLYP/STO-3G
ABC
8.81439 0.29659 0.29187

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.003 1.389 0.000
C2 0.000 0.181 0.000
N3 0.115 -1.238 0.000
H4 -0.004 2.465 0.000
H5 -0.408 -1.608 0.838
H6 -0.408 -1.608 -0.838

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20802.62971.07603.13843.1384
C21.20801.42392.28392.01672.0167
N32.62971.42393.70511.05451.0545
H41.07602.28393.70514.17724.1772
H53.13842.01671.05454.17721.6761
H63.13842.01671.05454.17721.6761

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 175.246 C2 C1 H4 179.505
C2 N3 H5 107.991 C2 N3 H6 107.991
H5 N3 H6 105.250
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.147      
2 C 0.015      
3 N -0.350      
4 H 0.107      
5 H 0.188      
6 H 0.188      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.613 -0.566 0.000 1.709
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.472 2.594 0.000
y 2.594 -12.918 0.000
z 0.000 0.000 -15.631
Traceless
 xyz
x -3.198 2.594 0.000
y 2.594 3.634 0.000
z 0.000 0.000 -0.436
Polar
3z2-r2-0.873
x2-y2-4.554
xy2.594
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.528 0.217 0.000
y 0.217 4.055 0.000
z 0.000 0.000 1.099


<r2> (average value of r2) Å2
<r2> 45.161
(<r2>)1/2 6.720