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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: B1B95/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/6-31G**
 hartrees
Energy at 0K-132.615177
Energy at 298.15K-132.617268
HF Energy-132.615177
Nuclear repulsion energy59.446360
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 B1B95/6-31G**
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' 3565 3404 11.01      
2 A' 3531 3371 79.87      
3 A' 2291 2187 87.83      
4 A' 1678 1602 30.91      
5 A' 1108 1058 13.39      
6 A' 666 636 243.43      
7 A' 492 470 87.04      
8 A' 365 348 30.49      
9 A" 3657 3491 27.40      
10 A" 1220 1165 0.20      
11 A" 669 639 35.53      
12 A" 366 350 4.14      

Unscaled Zero Point Vibrational Energy (zpe) 9803.4 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 9360.3 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 B1B95/6-31G**
ABC
10.20289 0.31188 0.30540

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.056 1.365 0.000
C2 0.000 0.159 0.000
N3 0.130 -1.186 0.000
H4 -0.121 2.426 0.000
H5 -0.226 -1.636 0.833
H6 -0.226 -1.636 -0.833

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20692.55771.06353.11903.1190
C21.20691.35162.27031.99211.9921
N32.55771.35163.62111.01151.0115
H41.06352.27033.62114.14824.1482
H53.11901.99211.01154.14821.6661
H63.11901.99211.01154.14821.6661

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 177.139 C2 C1 H4 179.122
C2 N3 H5 114.144 C2 N3 H6 114.144
H5 N3 H6 110.890
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.321      
2 C 0.265      
3 N -0.859      
4 H 0.204      
5 H 0.356      
6 H 0.356      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.246 -1.413 0.000 1.884
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.805 1.897 0.000
y 1.897 -11.643 0.000
z 0.000 0.000 -16.479
Traceless
 xyz
x -5.744 1.897 0.000
y 1.897 6.499 0.000
z 0.000 0.000 -0.755
Polar
3z2-r2-1.510
x2-y2-8.162
xy1.897
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.696 -0.110 0.000
y -0.110 6.251 0.000
z 0.000 0.000 2.157


<r2> (average value of r2) Å2
<r2> 44.036
(<r2>)1/2 6.636