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All results from a given calculation for HCCCN (Cyanoacetylene)

using model chemistry: B97D3/6-311+G(3df,2p)

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 B97D3/6-311+G(3df,2p)
 hartrees
Energy at 0K-169.517923
Energy at 298.15K-169.517104
HF Energy-169.517923
Nuclear repulsion energy76.868558
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 B97D3/6-311+G(3df,2p)
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 3412 3368 77.87      
2 Σ 2281 2251 17.47      
3 Σ 2103 2075 0.01      
4 Σ 892 880 0.01      
5 Π 652 643 41.69      
5 Π 652 643 41.69      
6 Π 526 520 2.92      
6 Π 526 520 2.92      
7 Π 231 228 0.16      
7 Π 231 228 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 5752.6 cm-1
Scaled (by 0.987) Zero Point Vibrational Energy (zpe) 5677.8 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 B97D3/6-311+G(3df,2p)
B
0.15200

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-311+G(3df,2p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.902
C2 0.000 0.000 0.736
C3 0.000 0.000 -0.630
C4 0.000 0.000 -1.840
H5 0.000 0.000 -2.907

Atom - Atom Distances (Å)
  N1 C2 C3 C4 H5
N11.16642.53153.74244.8092
C21.16641.36512.57603.6428
C32.53151.36511.21092.2777
C43.74242.57601.21091.0668
H54.80923.64282.27771.0668

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 B97D3/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -1.018      
2 C -0.014      
3 C 0.913      
4 C -0.094      
5 H 0.212      


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 -3.837 3.837
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.737 0.000 0.000
y 0.000 -22.737 0.000
z 0.000 0.000 -21.101
Traceless
 xyz
x -0.818 0.000 0.000
y 0.000 -0.818 0.000
z 0.000 0.000 1.636
Polar
3z2-r23.271
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 3.833 0.000 0.000
y 0.000 3.833 0.000
z 0.000 0.000 10.955


<r2> (average value of r2) Å2
<r2> 73.582
(<r2>)1/2 8.578