return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for ZnCH3 (Zinc monomethyl)

using model chemistry: HF/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at HF/6-31G*
 hartrees
Energy at 0K-1817.062378
Energy at 298.15K-1817.065359
HF Energy-1817.062378
Nuclear repulsion energy75.088845
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 HF/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3181 2858 52.83      
2 A1 1304 1171 15.54      
3 A1 497 446 7.58      
4 E 3257 2926 28.19      
4 E 3257 2926 28.19      
5 E 1588 1427 3.34      
5 E 1588 1427 3.34      
6 E 647 582 2.27      
6 E 647 582 2.27      

Unscaled Zero Point Vibrational Energy (zpe) 7982.6 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 7172.4 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 HF/6-31G*
ABC
5.41086 0.30431 0.30431

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Zn1 0.000 0.000 0.496
C2 0.000 0.000 -1.523
H3 0.000 1.015 -1.911
H4 0.879 -0.508 -1.911
H5 -0.879 -0.508 -1.911

Atom - Atom Distances (Å)
  Zn1 C2 H3 H4 H5
Zn12.01842.61232.61232.6123
C22.01841.08691.08691.0869
H32.61231.08691.75821.7582
H42.61231.08691.75821.7582
H52.61231.08691.75821.7582

picture of Zinc monomethyl state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Zn1 C2 H3 110.943 Zn1 C2 H4 110.943
Zn1 C2 H5 110.943 H3 C2 H4 107.960
H3 C2 H5 107.960 H4 C2 H5 107.960
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Zn 0.368      
2 C -0.865      
3 H 0.166      
4 H 0.166      
5 H 0.166      


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 0.194 0.194
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.493 0.000 0.000
y 0.000 -21.493 0.000
z 0.000 0.000 -27.310
Traceless
 xyz
x 2.909 0.000 0.000
y 0.000 2.909 0.000
z 0.000 0.000 -5.818
Polar
3z2-r2-11.636
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 7.367 0.000 0.000
y 0.000 7.367 0.000
z 0.000 0.000 8.342


<r2> (average value of r2) Å2
<r2> 49.969
(<r2>)1/2 7.069