Question

c please

2. (9 pts.) The charge transfer transitions for the three complexes, MO.", TcO.. and Reo, occur at 18939 cm", 34965 cm, and 44053 cm", respectively. a) Are these trends in energy transfer consistent with the position of the metals in the periodic table? Explain. b) Are these more likely to be ligand to metal (LTMCT) or metal to ligand charge transfer (MTLCT) transitions? Explain briefly. c) Using the data above explain why aqueous solutions of MnO," are purple whereas those of ReO" are colorless

Answer 1

on M60,? -dº electwon for My74, Re7+ Reo J is no dland fransition occur. Thege will be ligand to metal. charge fransfer (2M(1) from 0²- to d-orbital of Mutt and Rett Mo diagram for this LMCt is given follow YAM ven -cate e Emet (Reft) 500 (Ret) -t e ELMCT(mm 3do . 1 H 1L 1L ...t 11111/ Zigand orbital (a) 1 Elmet (mm77) < Ezmer (Ret)" Because 5d orbital of Rett has higher energy than 3d orbital of Mutta Ermita) = 18939 cm , Fape 7+3 = 44053 cm/ The Er value falls on the visible say region Therefore it shows purple color. But ElRezt) is very high and falls on the uv-region, there for Reout is colorless.