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ChemDraw drawings•in ChemDraw, use ACS settings•copy drawing to presentation and reduce size to 90%One X-ray structure per slideTables showing only minimal/necessary dataSpectra made with Origin•Use 2 pt line thickness in Origin•Reduce graph size in presentation to 70%
Chemistry and properties of Ln(III)Chemistry and properties of Ln(III)
• Oxidation state +III is most common• Hard acids• Prefer hard donor atoms O>N>>P,S• Large cations• Large coordination numbers
– Core 4f electrons– Omnidirectional/ionic bonding– Coordination numbers dictated by steric bulk of ligands
• Similar ionic radii• Magnetism• Light emission due to f-f transitions
– Core 4f orbitals– Characteristic emission colors– Sharp emission bands– f-f transitions forbidden by selection rules
CN 6:rion Ce3+=115.0 pmrion Lu3+=100.1 pm
Emission colorsEmission colors
Eu(III) Tb(III) Tm(III)
5D0→7F2 ~615 nm 5D4→7F5 ~545 nm 1G4→3H6 ~480 nm