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All results from a given calculation for HCCNH2 (Ethynamine)

using model chemistry: B3LYP/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-22.892441
Energy at 298.15K-22.894428
HF Energy-22.892441
Nuclear repulsion energy31.585752
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/CEP-121G
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' 3583 3492 20.67      
2 A' 3457 3369 79.84      
3 A' 2193 2137 127.56      
4 A' 1668 1625 47.94      
5 A' 1085 1057 18.10      
6 A' 520 507 139.74      
7 A' 475 462 11.75      
8 A' 322 314 394.90      
9 A" 3714 3619 27.51      
10 A" 1152 1123 5.23      
11 A" 768 749 55.67      
12 A" 356 347 18.63      

Unscaled Zero Point Vibrational Energy (zpe) 9646.5 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 9400.5 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/CEP-121G
ABC
11.14341 0.30389 0.29583

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.002 1.391 0.000
C2 0.000 0.164 0.000
N3 0.001 -1.195 0.000
H4 -0.002 2.456 0.000
H5 0.002 -1.711 0.866
H6 0.002 -1.711 -0.866

Atom - Atom Distances (Å)
  C1 C2 N3 H4 H5 H6
C11.22682.58531.06513.22073.2207
C21.22681.35852.29192.06572.0657
N32.58531.35853.65031.00871.0087
H41.06512.29193.65034.25624.2562
H53.22072.06571.00874.25621.7327
H63.22072.06571.00874.25621.7327

picture of Ethynamine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N3 179.964 C2 C1 H4 179.910
C2 N3 H5 120.816 C2 N3 H6 120.816
H5 N3 H6 118.367
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.705      
2 C 0.113      
3 N -0.330      
4 H 0.251      
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
  0.007 -1.892 0.000 1.892
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.956 -0.009 0.000
y -0.009 -11.177 0.000
z 0.000 0.000 -16.762
Traceless
 xyz
x -6.986 -0.009 0.000
y -0.009 7.682 0.000
z 0.000 0.000 -0.695
Polar
3z2-r2-1.391
x2-y2-9.778
xy-0.009
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.075 -0.007 0.000
y -0.007 6.879 0.000
z 0.000 0.000 2.337


<r2> (average value of r2) Å2
<r2> 38.547
(<r2>)1/2 6.209