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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: B3LYP/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 B3LYP/6-31G
 hartrees
Energy at 0K-132.648998
Energy at 298.15K-132.650944
HF Energy-132.648998
Nuclear repulsion energy59.256401
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/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' 3622 3484 26.27      
2 A' 3524 3390 80.57      
3 A' 2266 2179 101.20      
4 A' 1694 1629 49.48      
5 A' 1121 1078 18.29      
6 A' 507 487 3.59      
7 A' 413 397 277.95      
8 A' 363 349 292.67      
9 A" 3736 3594 35.53      
10 A" 1178 1133 8.41      
11 A" 727 699 40.91      
12 A" 365 351 11.50      

Unscaled Zero Point Vibrational Energy (zpe) 9756.8 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 9386.1 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/6-31G
ABC
11.26815 0.30902 0.30077

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.003 1.379 0.000
C2 0.000 0.162 0.000
N3 -0.002 -1.183 0.000
H4 0.002 2.441 0.000
H5 -0.002 -1.703 0.862
H6 -0.002 -1.703 -0.862

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.21622.56161.06243.20003.2000
C21.21621.34552.27852.05502.0550
N32.56161.34553.62401.00641.0064
H41.06242.27853.62404.23284.2328
H53.20002.05501.00644.23281.7230
H63.20002.05501.00644.23281.7230

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 179.952 C2 C1 H4 179.816
C2 N3 H5 121.124 C2 N3 H6 121.124
H5 N3 H6 117.751
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.213      
2 C 0.134      
3 N -0.803      
4 H 0.212      
5 H 0.335      
6 H 0.335      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.006 -1.834 0.000 1.834
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.183 0.002 0.000
y 0.002 -11.135 0.000
z 0.000 0.000 -16.282
Traceless
 xyz
x -6.475 0.002 0.000
y 0.002 7.098 0.000
z 0.000 0.000 -0.623
Polar
3z2-r2-1.246
x2-y2-9.048
xy0.002
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.292 0.010 0.000
y 0.010 6.281 0.000
z 0.000 0.000 1.924


<r2> (average value of r2) Å2
<r2> 44.514
(<r2>)1/2 6.672