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: HF/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 HF/6-31G*
 hartrees
Energy at 0K-1856.699457
Energy at 298.15K-1856.704924
HF Energy-1856.699457
Nuclear repulsion energy162.803554
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' 3175 2853 0.00      
2 A1' 1382 1241 0.00      
3 A1' 511 460 0.00      
4 A1" 31 28 0.00      
5 A2" 3172 2850 67.42      
6 A2" 1376 1236 4.66      
7 A2" 614 551 41.80      
8 E' 3235 2907 70.23      
8 E' 3235 2907 70.23      
9 E' 1599 1437 0.48      
9 E' 1599 1437 0.48      
10 E' 757 680 104.03      
10 E' 757 680 104.03      
11 E' 119 107 8.07      
11 E' 119 107 8.07      
12 E" 3235 2906 0.00      
12 E" 3235 2906 0.00      
13 E" 1597 1435 0.00      
13 E" 1597 1435 0.00      
14 E" 661 594 0.00      
14 E" 661 594 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 16334.7 cm-1
Scaled (by 0.8985) Zero Point Vibrational Energy (zpe) 14676.7 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
2.73813 0.12897 0.12897

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/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 1.972
C3 0.000 0.000 -1.972
H4 0.000 1.009 2.380
H5 0.000 1.009 -2.380
H6 -0.874 -0.505 2.380
H7 0.874 -0.505 2.380
H8 0.874 -0.505 -2.380
H9 -0.874 -0.505 -2.380

Atom - Atom Distances (Å)
  Zn1 C2 C3 H4 H5 H6 H7 H8 H9
Zn11.97251.97252.58512.58512.58512.58512.58512.5851
C21.97253.94491.08824.46791.08821.08824.46794.4679
C31.97253.94494.46791.08824.46794.46791.08821.0882
H42.58511.08824.46794.76011.74771.74775.07085.0708
H52.58514.46791.08824.76015.07085.07081.74771.7477
H62.58511.08824.46791.74775.07081.74775.07084.7601
H72.58511.08824.46791.74775.07081.74774.76015.0708
H82.58514.46791.08825.07081.74775.07084.76011.7477
H92.58514.46791.08825.07081.74774.76015.07081.7477

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 111.996 Zn1 C2 H6 111.996
Zn1 C2 H7 111.996 Zn1 C3 H5 111.996
Zn1 C3 H8 111.996 Zn1 C3 H9 111.996
C2 Zn1 C3 180.000 H4 C2 H6 106.833
H4 C2 H7 106.833 H5 C3 H8 106.833
H5 C3 H9 106.833 H6 C2 H7 106.833
H8 C3 H9 106.833
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 0.774      
2 C -0.880      
3 C -0.880      
4 H 0.164      
5 H 0.164      
6 H 0.164      
7 H 0.164      
8 H 0.164      
9 H 0.164      


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 -27.356 0.000 0.000
y 0.000 -27.356 0.000
z 0.000 0.000 -36.363
Traceless
 xyz
x 4.504 0.000 0.000
y 0.000 4.504 0.000
z 0.000 0.000 -9.007
Polar
3z2-r2-18.014
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 5.177 0.000 0.000
y 0.000 5.177 0.000
z 0.000 0.000 7.771


<r2> (average value of r2) Å2
<r2> 105.745
(<r2>)1/2 10.283