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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-132.660296
Energy at 298.15K-132.662406
HF Energy-132.660296
Nuclear repulsion energy59.552725
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' 3558 3425 10.13      
2 A' 3485 3355 74.49      
3 A' 2257 2173 106.47      
4 A' 1689 1626 36.89      
5 A' 1097 1056 14.06      
6 A' 623 600 236.34      
7 A' 489 471 106.71      
8 A' 387 372 32.13      
9 A" 3643 3507 23.00      
10 A" 1222 1177 0.20      
11 A" 686 661 38.80      
12 A" 376 362 9.27      

Unscaled Zero Point Vibrational Energy (zpe) 9756.2 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 9392.3 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
10.32635 0.31312 0.30637

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 -0.017 1.364 0.000
C2 0.000 0.159 0.000
N3 0.093 -1.185 0.000
H4 -0.046 2.427 0.000
H5 -0.251 -1.636 0.836
H6 -0.251 -1.636 -0.836

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20442.55091.06353.12263.1226
C21.20441.34752.26781.99621.9962
N32.55091.34753.61431.01041.0104
H41.06352.26783.61434.15274.1527
H53.12261.99621.01044.15271.6723
H63.12261.99621.01044.15271.6723

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 176.860 C2 C1 H4 179.263
C2 N3 H5 114.939 C2 N3 H6 114.939
H5 N3 H6 111.703
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 -0.163      
2 C 0.149      
3 N -0.919      
4 H 0.234      
5 H 0.349      
6 H 0.349      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.180 -1.552 0.000 1.950
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.333 2.005 0.000
y 2.005 -11.751 0.000
z 0.000 0.000 -16.871
Traceless
 xyz
x -6.022 2.005 0.000
y 2.005 6.851 0.000
z 0.000 0.000 -0.829
Polar
3z2-r2-1.657
x2-y2-8.582
xy2.005
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.140 0.004 0.000
y 0.004 6.531 0.000
z 0.000 0.000 2.451


<r2> (average value of r2) Å2
<r2> 44.159
(<r2>)1/2 6.645