Coordination Compounds
- Jahn-Teller effect is not observed in high spin complexes of Answer: 1. d⁸ Key idea: Jahn-Teller distortion occurs when the e_g or t_2g set is unevenly filled (degenerate ground state). High spin d⁸ :... 1
- The correct increasing order of trans-effect of the following species is Answer: 1. CN^- > C₆H₅^- > Br^- > NH₃ Key idea: trans-effect series: strong pi-acceptors and strong sigma-donors are highest, while NH₃ is l... 1
- Which of the following has longest C-O bond length ? (Free C-O bond length in CO is 1.128\ .) Answer: 3. [Fe(CO)₄]²⁻ Key idea: in metal carbonyls, back bonding from metal d orbitals into the CO π^* orbital weakens the C-O bond and len... 1