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

using model chemistry: QCISD/3-21G*

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/3-21G*
 hartrees
Energy at 0K-1848.356371
Energy at 298.15K 
Nuclear repulsion energy165.058776
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/3-21G*
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' 3006 2889 0.00      
2 A1' 1358 1306 0.00      
3 A1' 528 507 0.00      
4 A1" 31 30 0.00      
5 A2" 3004 2887 32.56      
6 A2" 1348 1295 14.33      
7 A2" 575 553 26.53      
8 E' 3063 2944 50.43      
8 E' 3063 2944 50.43      
9 E' 1517 1458 2.05      
9 E' 1517 1458 2.05      
10 E' 766 736 104.52      
10 E' 766 736 104.52      
11 E' 99i 95i 4.39      
11 E' 99i 95i 4.39      
12 E" 3063 2944 0.00      
12 E" 3063 2944 0.00      
13 E" 1516 1457 0.00      
13 E" 1516 1457 0.00      
14 E" 648 623 0.00      
14 E" 648 623 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 15398.8 cm-1
Scaled (by 0.9611) Zero Point Vibrational Energy (zpe) 14799.8 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/3-21G*
ABC
2.67587 0.13360 0.13360

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G*

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 1.933
C3 0.000 0.000 -1.933
H4 0.000 1.021 2.348
H5 0.000 1.021 -2.348
H6 -0.884 -0.510 2.348
H7 0.884 -0.510 2.348
H8 0.884 -0.510 -2.348
H9 -0.884 -0.510 -2.348

Atom - Atom Distances (Å)
  Zn1 C2 C3 H4 H5 H6 H7 H8 H9
Zn11.93321.93322.56042.56042.56042.56042.56042.5604
C21.93323.86631.10184.40131.10181.10184.40134.4013
C31.93323.86634.40131.10184.40134.40131.10181.1018
H42.56041.10184.40134.69631.76791.76795.01815.0181
H52.56044.40131.10184.69635.01815.01811.76791.7679
H62.56041.10184.40131.76795.01811.76795.01814.6963
H72.56041.10184.40131.76795.01811.76794.69635.0181
H82.56044.40131.10185.01811.76795.01814.69631.7679
H92.56044.40131.10185.01811.76794.69635.01811.7679

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 112.126 Zn1 C2 H6 112.126
Zn1 C2 H7 112.126 Zn1 C3 H5 112.126
Zn1 C3 H8 112.126 Zn1 C3 H9 112.126
C2 Zn1 C3 180.000 H4 C2 H6 106.691
H4 C2 H7 106.691 H5 C3 H8 106.691
H5 C3 H9 106.691 H6 C2 H7 106.691
H8 C3 H9 106.691
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability