Not Just Heavy “Grignards”: Recent Advances in the Organometallic Chemistry of the Alkaline Earth Metals Calcium, Strontium and Barium

✍ Scribed by Jacob S. Alexander; Karin Ruhlandt-Senge

• Publisher: John Wiley and Sons
• Year: 2002
• Tongue: English
• Weight: 252 KB
• Volume: 2002
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/1099-0682(200211)2002:11<2761::aid-ejic2761>3.0.co;2-2

✦ Synopsis

Since their initial development in the early 1900's, Grignard reagents have proven to be immensely useful and are among the most common organometallic reagents. The nature of the reagents in solution is complex and depends on substituents, solvent, concentration and temperature. Despite continuing questions about their solid state and solution composition and conformation, organomagnesium reagents find new applications continually. In contrast, little information about the heavier alkaline earth organometallic compounds RMX and R 2 M (R = alkyl, aryl; M = Ca, Sr, Ba, X = halide) exists. High reactivity due to the predominantly ionic character of the metal-ligand bond and increased lability complicates synthetic access.