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All results from a given calculation for HCCCN (Cyanoacetylene)

using model chemistry: wB97X-D/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at wB97X-D/cc-pVTZ
 hartrees
Energy at 0K-169.561678
Energy at 298.15K-169.560968
HF Energy-169.561678
Nuclear repulsion energy77.320405
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 wB97X-D/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 3474 3321 81.19      
2 Σ 2433 2326 27.00      
3 Σ 2211 2113 0.87      
4 Σ 901 861 0.02      
5 Π 717 685 38.46      
5 Π 717 685 38.46      
6 Π 547 523 8.85      
6 Π 547 523 8.85      
7 Π 235 225 0.05      
7 Π 235 225 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 6007.9 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 5743.5 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 wB97X-D/cc-pVTZ
B
0.15327

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.890
C2 0.000 0.000 0.743
C3 0.000 0.000 -0.635
C4 0.000 0.000 -1.831
H5 0.000 0.000 -2.894

Atom - Atom Distances (Å)
  N1 C2 C3 C4 H5
N11.14792.52523.72134.7847
C21.14791.37732.57343.6368
C32.52521.37731.19612.2595
C43.72132.57341.19611.0634
H54.78473.63682.25951.0634

picture of Cyanoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 180.000 C2 C3 C4 180.000
C3 C4 H5 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.097      
2 C 0.052      
3 C 0.272      
4 C -0.340      
5 H 0.113      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -3.846 3.846
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.563 0.000 0.000
y 0.000 -22.563 0.000
z 0.000 0.000 -20.581
Traceless
 xyz
x -0.991 0.000 0.000
y 0.000 -0.991 0.000
z 0.000 0.000 1.983
Polar
3z2-r23.966
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.003 0.000 0.000
y 0.000 3.003 0.000
z 0.000 0.000 9.767


<r2> (average value of r2) Å2
<r2> 72.902
(<r2>)1/2 8.538