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 Zn(CH3)2 (dimethyl zinc)

using model chemistry: B3LYP/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D3H 1A1'
Energy calculated at B3LYP/6-31G**
 hartrees
Energy at 0K-1858.948328
Energy at 298.15K-1858.953788
Nuclear repulsion energy166.137255
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 B3LYP/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' 3035 2916 0.00      
2 A1' 1276 1226 0.00      
3 A1' 533 512 0.00      
4 A1" 37 36 0.00      
5 A2" 3033 2914 30.95      
6 A2" 1272 1222 2.52      
7 A2" 630 605 41.24      
8 E' 3105 2983 38.13      
8 E' 3105 2983 38.13      
9 E' 1462 1405 0.50      
9 E' 1462 1405 0.50      
10 E' 751 722 77.70      
10 E' 751 722 77.70      
11 E' 119 114 1.92      
11 E' 119 114 1.92      
12 E" 3105 2983 0.00      
12 E" 3105 2983 0.00      
13 E" 1459 1401 0.00      
13 E" 1459 1401 0.00      
14 E" 642 617 0.00      
14 E" 642 617 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 15549.7 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 14940.1 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 B3LYP/6-31G**
ABC
2.70041 0.13541 0.13541

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is D3h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Zn1 0.000 0.000 0.000
C2 0.000 0.000 1.920
C3 0.000 0.000 -1.920
H4 0.000 1.016 2.332
H5 0.000 1.016 -2.332
H6 -0.880 -0.508 2.332
H7 0.880 -0.508 2.332
H8 0.880 -0.508 -2.332
H9 -0.880 -0.508 -2.332

Atom - Atom Distances (Å)
  Zn1 C2 C3 H4 H5 H6 H7 H8 H9
Zn11.92021.92022.54362.54362.54362.54362.54362.5436
C21.92023.84031.09634.37171.09631.09634.37174.3717
C31.92023.84034.37171.09634.37174.37171.09631.0963
H42.54361.09634.37174.66371.75991.75994.98474.9847
H52.54364.37171.09634.66374.98474.98471.75991.7599
H62.54361.09634.37171.75994.98471.75994.98474.6637
H72.54361.09634.37171.75994.98471.75994.66374.9847
H82.54364.37171.09634.98471.75994.98474.66371.7599
H92.54364.37171.09634.98471.75994.66374.98471.7599

picture of dimethyl zinc state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Zn1 C2 H4 112.056 Zn1 C2 H6 112.056
Zn1 C2 H7 112.056 Zn1 C3 H5 112.056
Zn1 C3 H8 112.056 Zn1 C3 H9 112.056
C2 Zn1 C3 180.000 H4 C2 H6 106.767
H4 C2 H7 106.767 H5 C3 H8 106.767
H5 C3 H9 106.767 H6 C2 H7 106.767
H8 C3 H9 106.767
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Zn 0.547      
2 C -0.618      
3 C -0.618      
4 H 0.115      
5 H 0.115      
6 H 0.115      
7 H 0.115      
8 H 0.115      
9 H 0.115      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.689 0.000 0.000
y 0.000 -27.689 0.000
z 0.000 0.000 -33.116
Traceless
 xyz
x 2.714 0.000 0.000
y 0.000 2.714 0.000
z 0.000 0.000 -5.428
Polar
3z2-r2-10.855
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 5.602 0.000 0.000
y 0.000 5.602 0.000
z 0.000 0.000 8.643


<r2> (average value of r2) Å2
<r2> 101.487
(<r2>)1/2 10.074