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All results from a given calculation for HCCCN (Cyanoacetylene)

using model chemistry: wB97X-D/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 wB97X-D/cc-pVDZ
 hartrees
Energy at 0K-169.508798
Energy at 298.15K-169.508265
HF Energy-169.508798
Nuclear repulsion energy76.802295
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-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 3487 3322 82.31      
2 Σ 2436 2320 33.69      
3 Σ 2215 2110 0.27      
4 Σ 905 862 0.03      
5 Π 738 703 44.13      
5 Π 738 703 44.13      
6 Π 629 599 19.33      
6 Π 629 599 19.33      
7 Π 260 247 0.02      
7 Π 260 247 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 6147.2 cm-1
Scaled (by 0.9526) Zero Point Vibrational Energy (zpe) 5855.8 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 wB97X-D/cc-pVDZ
B
0.15136

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.904
C2 0.000 0.000 0.745
C3 0.000 0.000 -0.637
C4 0.000 0.000 -1.844
H5 0.000 0.000 -2.912

Atom - Atom Distances (Å)
  N1 C2 C3 C4 H5
N11.15872.54153.74804.8162
C21.15871.38282.58933.6575
C32.54151.38281.20652.2747
C43.74802.58931.20651.0682
H54.81623.65752.27471.0682

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-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.553      
2 C -0.916      
3 C 0.809      
4 C 0.362      
5 H 0.298      


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 -3.988 3.988
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.813 0.000 0.000
y 0.000 -22.813 0.000
z 0.000 0.000 -20.755
Traceless
 xyz
x -1.029 0.000 0.000
y 0.000 -1.029 0.000
z 0.000 0.000 2.058
Polar
3z2-r24.117
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 2.683 0.000 0.000
y 0.000 2.683 0.000
z 0.000 0.000 10.271


<r2> (average value of r2) Å2
<r2> 73.787
(<r2>)1/2 8.590