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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: LSDA/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-131.944781
Energy at 298.15K-131.946725
HF Energy-131.944781
Nuclear repulsion energy59.554618
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(2df,p)
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' 3482 3426 7.07      
2 A' 3460 3405 115.91      
3 A' 2247 2211 89.22      
4 A' 1557 1532 27.95      
5 A' 1116 1098 12.85      
6 A' 542 533 140.57      
7 A' 469 461 131.51      
8 A' 330 325 40.93      
9 A" 3567 3510 42.13      
10 A" 1125 1107 0.32      
11 A" 652 641 34.64      
12 A" 362 356 7.26      

Unscaled Zero Point Vibrational Energy (zpe) 9454.0 cm-1
Scaled (by 0.984) Zero Point Vibrational Energy (zpe) 9302.8 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(2df,p)
ABC
10.30879 0.31412 0.30702

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.019 1.364 0.000
C2 0.000 0.154 0.000
N3 0.090 -1.178 0.000
H4 -0.053 2.433 0.000
H5 -0.231 -1.647 0.845
H6 -0.231 -1.647 -0.845

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21042.54391.06953.13483.1348
C21.21041.33432.27982.00282.0028
N32.54391.33433.61331.01871.0187
H41.06952.27983.61334.17074.1707
H53.13482.00281.01874.17071.6896
H63.13482.00281.01874.17071.6896

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 177.039 C2 C1 H4 179.108
C2 N3 H5 116.029 C2 N3 H6 116.029
H5 N3 H6 112.048
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.205      
2 C 0.052      
3 N -0.634      
4 H 0.199      
5 H 0.294      
6 H 0.294      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.976 -1.689 0.000 1.951
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.756 1.654 0.000
y 1.654 -11.566 0.000
z 0.000 0.000 -16.492
Traceless
 xyz
x -5.727 1.654 0.000
y 1.654 6.558 0.000
z 0.000 0.000 -0.832
Polar
3z2-r2-1.663
x2-y2-8.190
xy1.654
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.192 0.013 0.000
y 0.013 6.624 0.000
z 0.000 0.000 2.592


<r2> (average value of r2) Å2
<r2> 43.908
(<r2>)1/2 6.626