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: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-1818.935993
Energy at 298.15K 
Nuclear repulsion energy77.913951
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 B3PW91/6-31G(2df,p)
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 3036 2918 11.45      
2 A1 1166 1121 3.49      
3 A1 552 531 12.79      
4 E 3133 3013 8.00      
4 E 3133 3013 8.00      
5 E 1432 1377 4.10      
5 E 1432 1377 4.10      
6 E 597 574 1.31      
6 E 597 574 1.30      

Unscaled Zero Point Vibrational Energy (zpe) 7538.8 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 7247.8 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 B3PW91/6-31G(2df,p)
See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Zn1 0.000 0.000 0.474
C2 0.000 0.000 -1.452
H3 0.000 1.026 -1.835
H4 0.888 -0.513 -1.835
H5 -0.888 -0.513 -1.835

Atom - Atom Distances (Å)
  Zn1 C2 H3 H4 H5
Zn11.92532.52662.52662.5266
C21.92531.09511.09511.0951
H32.52661.09511.77651.7765
H42.52661.09511.77651.7765
H52.52661.09511.77651.7765

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 110.514 Zn1 C2 H4 110.514
Zn1 C2 H5 110.514 H3 C2 H4 108.409
H3 C2 H5 108.409 H4 C2 H5 108.409
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Zn 0.323      
2 C -0.790      
3 H 0.156      
4 H 0.156      
5 H 0.156      


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 -0.456 0.456
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.223 0.000 0.000
y 0.000 -21.223 0.000
z 0.000 0.000 -25.359
Traceless
 xyz
x 2.068 0.000 0.000
y 0.000 2.068 0.000
z 0.000 0.000 -4.136
Polar
3z2-r2-8.272
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 7.133 0.000 0.000
y 0.000 7.136 -0.001
z 0.000 -0.001 8.562


<r2> (average value of r2) Å2
<r2> 46.754
(<r2>)1/2 6.838