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All results from a given calculation for Zn(CH3)2 (dimethyl zinc)

using model chemistry: QCISD/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 QCISD/6-31G*
 hartrees
Energy at 0K-1857.250721
Energy at 298.15K-1857.256206
Nuclear repulsion energy165.671897
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 QCISD/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' 3050 2904 0.00      
2 A1' 1329 1265 0.00      
3 A1' 532 507 0.00      
4 A1" 29 28 0.00      
5 A2" 3048 2903 34.15      
6 A2" 1324 1261 4.45      
7 A2" 639 609 37.70      
8 E' 3121 2972 46.44      
8 E' 3121 2972 46.44      
9 E' 1493 1422 1.06      
9 E' 1493 1422 1.06      
10 E' 761 725 88.31      
10 E' 761 725 88.31      
11 E' 124 118 3.27      
11 E' 124 118 3.27      
12 E" 3121 2972 0.00      
12 E" 3121 2972 0.00      
13 E" 1492 1421 0.00      
13 E" 1492 1421 0.00      
14 E" 654 623 0.00      
14 E" 654 623 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 15740.6 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 14989.8 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 QCISD/6-31G*
ABC
2.69712 0.13461 0.13461

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/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 1.925
C3 0.000 0.000 -1.925
H4 0.000 1.017 2.342
H5 0.000 1.017 -2.342
H6 -0.880 -0.508 2.342
H7 0.880 -0.508 2.342
H8 0.880 -0.508 -2.342
H9 -0.880 -0.508 -2.342

Atom - Atom Distances (Å)
  Zn1 C2 C3 H4 H5 H6 H7 H8 H9
Zn11.92511.92512.55322.55322.55322.55322.55322.5532
C21.92513.85011.09884.38651.09881.09884.38654.3865
C31.92513.85014.38651.09884.38654.38651.09881.0988
H42.55321.09884.38654.68401.76091.76095.00415.0041
H52.55324.38651.09884.68405.00415.00411.76091.7609
H62.55321.09884.38651.76095.00411.76095.00414.6840
H72.55321.09884.38651.76095.00411.76094.68405.0041
H82.55324.38651.09885.00411.76095.00414.68401.7609
H92.55324.38651.09885.00411.76094.68405.00411.7609

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 112.300 Zn1 C2 H6 112.300
Zn1 C2 H7 112.300 Zn1 C3 H5 112.300
Zn1 C3 H8 112.300 Zn1 C3 H9 112.300
C2 Zn1 C3 180.000 H4 C2 H6 106.501
H4 C2 H7 106.501 H5 C3 H8 106.501
H5 C3 H9 106.501 H6 C2 H7 106.501
H8 C3 H9 106.501
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability