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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-131.893930
Energy at 298.15K-131.896328
HF Energy-131.893930
Nuclear repulsion energy59.714445
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 B1B95/3-21G
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' 3584 3429 31.01      
2 A' 3540 3387 92.23      
3 A' 2307 2207 103.59      
4 A' 1694 1620 55.79      
5 A' 1151 1101 18.78      
6 A' 734 702 130.17      
7 A' 572 547 5.29      
8 A' 384 367 413.43      
9 A" 3686 3526 47.70      
10 A" 1186 1135 10.10      
11 A" 902 863 28.17      
12 A" 483 463 21.38      

Unscaled Zero Point Vibrational Energy (zpe) 10110.8 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 9673.0 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 B1B95/3-21G
ABC
11.19929 0.31498 0.30637

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.001 1.366 0.000
C2 0.000 0.159 0.000
N3 0.000 -1.170 0.000
H4 0.003 2.424 0.000
H5 0.000 -1.691 0.864
H6 0.000 -1.691 -0.864

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20702.53571.05813.17713.1771
C21.20701.32872.26512.04222.0422
N32.53571.32873.59381.00941.0094
H41.05812.26513.59384.20524.2052
H53.17712.04221.00944.20521.7283
H63.17712.04221.00944.20521.7283

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 179.967 C2 C1 H4 179.751
C2 N3 H5 121.117 C2 N3 H6 121.117
H5 N3 H6 117.766
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.035      
2 C 0.137      
3 N -1.013      
4 H 0.254      
5 H 0.329      
6 H 0.329      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.007 -2.033 0.000 2.033
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.118 0.012 0.000
y 0.012 -10.911 0.000
z 0.000 0.000 -16.343
Traceless
 xyz
x -6.491 0.012 0.000
y 0.012 7.319 0.000
z 0.000 0.000 -0.828
Polar
3z2-r2-1.656
x2-y2-9.207
xy0.012
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.013 -0.003 0.000
y -0.003 5.956 0.000
z 0.000 0.000 1.708


<r2> (average value of r2) Å2
<r2> 43.878
(<r2>)1/2 6.624