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for a tetrahedral comples that follow about this MO 9, edely beding for . The Ta

ID: 1054789 • Letter: F

Question

for a tetrahedral comples that follow about this MO 9, edely beding for . The Tacharacter table and MOdagram uch as FoCL are both given below. Answer the questions that diagram E 2 1 20 Sai set c tz a Populate the MO diagram for the complex FeCle. How many unpaired electrons are predicted for the tetrahedral complex? b Label the HON40and LUMO c. Circle the non-bonding orbitals d. Label A 10. How many unpaired electrons would be expected for a Co(lI) ion in tetrahedral, octahedral, and square-planar complexes? 11. Why is tetrahedral geometry more stable for Co(ll) than for Nä(tl)?

Explanation / Answer

ans) 3 ) a) ionisation isomerism.

             complexes which have same empirical formula but give different ions in solution on ionisation are

        called ionisation isomerism.

     eg:       Pt [ ( NH3) 4Cl2] Br2   it gives Br- ions in aq solution   &   Pt [   (NH3)4Br2 ] Cl2 it gives Cl- ions in

aq solution.

     b) ans   :   linkage isomerism

      because in which ligands can coordinate with the central metal ion through either of the two atoms.

      eg :    [ Co ( NH3)5NO2 ]2+, in this complex ,N" from NO2 -attach with the central ion.

       SIMILARLY   [ Co ( NH3) 5 (ONO ) ] 2+, INTHIS COMPLEX "O" from ONO" attach with central ion.

            c) ans:     coordination isomerism

        if both cation& anion of a complex compound are complex exchange of ligands between Co& Cr

complex,then it is called coordination isomerism.

    2)   ans     :    this is   M( AA) a2 b2 type of complex.it exist cis-trans isomerism in geometrical isomerism.

                these also exist in three forms : two are optically active &third is inactive or symmetrical.

      i.e d-cis -form & l- cis -form, these are unsymmetrical forms &hence are optically active.

     if a2   (or) b2 opposite side i.e. trans form which is symmetrical form& hence opticall inactive.