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All results from a given calculation for HCCCN (Cyanoacetylene)

using model chemistry: B3PW91/cc-pVDZ

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 B3PW91/cc-pVDZ
 hartrees
Energy at 0K-169.509357
Energy at 298.15K-169.508670
Nuclear repulsion energy76.597509
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 B3PW91/cc-pVDZ
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 3483 3361 91.15      
2 Σ 2392 2309 23.52      
3 Σ 2181 2105 0.50      
4 Σ 916 884 0.02      
5 Π 703 679 35.88      
5 Π 703 679 35.88      
6 Π 554 535 4.50      
6 Π 554 535 4.50      
7 Π 245 237 0.11      
7 Π 245 237 0.11      

Unscaled Zero Point Vibrational Energy (zpe) 5988.6 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 5779.0 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 B3PW91/cc-pVDZ
B
0.15082

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.908
C2 0.000 0.000 0.741
C3 0.000 0.000 -0.633
C4 0.000 0.000 -1.847
H5 0.000 0.000 -2.921

Atom - Atom Distances (Å)
  N1 C2 C3 C4 H5
N11.16692.54113.75554.8295
C21.16691.37422.58863.6626
C32.54111.37421.21442.2884
C43.75552.58861.21441.0740
H54.82953.66262.28841.0740

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 B3PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.097      
2 C -0.239      
3 C 0.596      
4 C -0.299      
5 H 0.039      


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 -3.692 3.692
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.389 0.000 0.000
y 0.000 -22.389 0.000
z 0.000 0.000 -19.925
Traceless
 xyz
x -1.232 0.000 0.000
y 0.000 -1.232 0.000
z 0.000 0.000 2.463
Polar
3z2-r24.926
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 2.274 0.000 0.000
y 0.000 2.274 0.000
z 0.000 0.000 9.648


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000