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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: LSDA/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 LSDA/6-31G
 hartrees
Energy at 0K-131.898956
Energy at 298.15K-131.900888
HF Energy-131.898956
Nuclear repulsion energy59.236976
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 LSDA/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' 3546 3474 31.72      
2 A' 3452 3382 93.74      
3 A' 2253 2207 99.59      
4 A' 1630 1597 58.43      
5 A' 1140 1117 13.48      
6 A' 527 517 137.46      
7 A' 439 430 389.60      
8 A' 339 333 52.99      
9 A" 3656 3582 43.90      
10 A" 1137 1114 12.25      
11 A" 681 667 43.67      
12 A" 361 354 13.15      

Unscaled Zero Point Vibrational Energy (zpe) 9581.0 cm-1
Scaled (by 0.9797) Zero Point Vibrational Energy (zpe) 9386.5 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 LSDA/6-31G
ABC
11.10214 0.30987 0.30146

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.003 1.378 0.000
C2 0.000 0.156 0.000
N3 -0.003 -1.178 0.000
H4 0.007 2.450 0.000
H5 -0.004 -1.705 0.868
H6 -0.004 -1.705 -0.868

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.22202.55621.07223.20253.2025
C21.22201.33422.29422.05322.0532
N32.55621.33423.62841.01521.0152
H41.07222.29423.62844.24464.2446
H53.20252.05321.01524.24461.7359
H63.20252.05321.01524.24461.7359

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 179.961 C2 C1 H4 179.977
C2 N3 H5 121.243 C2 N3 H6 121.243
H5 N3 H6 117.515
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.248      
2 C 0.121      
3 N -0.812      
4 H 0.230      
5 H 0.355      
6 H 0.355      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.003 -2.032 0.000 2.032
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.287 0.024 0.000
y 0.024 -10.744 0.000
z 0.000 0.000 -16.230
Traceless
 xyz
x -6.800 0.024 0.000
y 0.024 7.515 0.000
z 0.000 0.000 -0.714
Polar
3z2-r2-1.429
x2-y2-9.543
xy0.024
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.319 0.013 0.000
y 0.013 6.470 0.000
z 0.000 0.000 1.958


<r2> (average value of r2) Å2
<r2> 44.417
(<r2>)1/2 6.665