Purple Haze 
 
 Purple Haze, all in my flask
 Solution colored, explain this, my task,
 Coordination, crystal field theory,
 Ligands bonded, partial d occupancy,
 Cis or trans, fac or mer, please state,
 Labile, inert, some ligands chelate,
 Octa- or tetrahedral, or square planar,
 Low spin, high spin, d5, weak color,
 Spectrochemical, fields weak and strong,
 Read the chapter, and make a song,
 Ligand field theory, pi back bonding,
 Organometallic, catalysis I sing,
 PurpleHaze (click to download)