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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: B3LYP/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 B3LYP/3-21G*
 hartrees
Energy at 0K-131.958962
Energy at 298.15K-131.961283
HF Energy-131.958962
Nuclear repulsion energy59.535740
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 B3LYP/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' 3535 3401 6.03      
2 A' 3519 3385 102.56      
3 A' 2284 2197 96.80      
4 A' 1690 1625 47.79      
5 A' 1136 1093 17.96      
6 A' 714 686 113.18      
7 A' 562 541 12.33      
8 A' 340 327 397.80      
9 A" 3629 3491 36.60      
10 A" 1181 1136 8.25      
11 A" 893 859 26.04      
12 A" 479 460 19.96      

Unscaled Zero Point Vibrational Energy (zpe) 9980.2 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 9600.9 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 B3LYP/3-21G*
ABC
11.14155 0.31307 0.30451

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.370 0.000
C2 0.000 0.160 0.000
N3 -0.001 -1.173 0.000
H4 0.003 2.429 0.000
H5 0.001 -1.698 0.866
H6 0.001 -1.698 -0.866

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.20962.54331.05933.18823.1882
C21.20961.33372.26892.05062.0506
N32.54331.33373.60261.01301.0130
H41.05932.26893.60264.21754.2175
H53.18822.05061.01304.21751.7328
H63.18822.05061.01304.21751.7328

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 179.975 C2 C1 H4 179.845
C2 N3 H5 121.211 C2 N3 H6 121.211
H5 N3 H6 117.577
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.019      
2 C 0.138      
3 N -0.970      
4 H 0.227      
5 H 0.312      
6 H 0.312      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.010 -2.035 0.000 2.036
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.083 0.002 0.000
y 0.002 -11.086 0.000
z 0.000 0.000 -16.388
Traceless
 xyz
x -6.346 0.002 0.000
y 0.002 7.149 0.000
z 0.000 0.000 -0.803
Polar
3z2-r2-1.606
x2-y2-8.997
xy0.002
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.008 0.001 0.000
y 0.001 6.004 0.000
z 0.000 0.000 1.729


<r2> (average value of r2) Å2
<r2> 44.124
(<r2>)1/2 6.643