Essays on NMR

Iridium organometallic complexes

Introduction Iridium organometallic complexes are applied as catalysts, light-emitting diodes, dye-sensitized solar cells, and luminescent agents for cells imaging.1 Due to the wide application area, the scientists perform research on preparation, characterization and physical and chemical properties of iridium organometallic complexes.

The oxidation state in complex compound refers to the charge of the metal, which it would have in a simple ionic compound. The configuration of d-orbitals (dn) indicates the number of valence electrons in free metal of the same oxidation state. The iridium electronic configuration is [Xe] 4f145d76s2, yet the s-electrons transfer to d-orbital to form 5d9. The ...

ABSTRACT

This is a scientific lab report prepared after an empirical observation. The main experiment is the synthesis of 1,4-Dihydropyridine. A simple dihydropyridine from a simple reactant (formaldehyde, ammonium acetate and 2,4-pentanedione ), is synthesized. The final part of this work deals with the determination of reasonable mechanisms for this synthesis.

INTRODUCTION

1,4-Dihydropyridine is an equivalent of nicotinamide adenine dinucleotide (NADH) coenzymes. It exhibits a wide range of biological activities such as calcium channel blocking. This explains their wide use today in pharmacology.

The aim of this experiment is to synthesize a sample of dihydropyridine and determine the mechanisms for ...