Aromatic ring destruction in complexes of dipositive metal cations

✍ Scribed by Alexandre A Shvartsburg

• Book ID: 104108143
• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 185 KB
• Volume: 376
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/s0009-2614(03)00815-7

✦ Synopsis

Singly charged metal cations do not normally activate the p-ring in monoaromatic ligands. Here pyridine complexes of six dipositive metal cations (Ca, Mg, Mn, Fe, Co, and Cu) are probed using collisional dissociation. Except for Cu, species with one-three ligands (depending on the metal) exhibit two significant aromaticity-destroying ligand cleavage processes. One proceeds with charge reduction yielding singly charged bare or ligated metal cyanide cations and C 4 H þ 5 , and the other retains the double charge eliminating one or two small neutrals such as NH 2 or CH 3 . The previously reported cluster-to-metal charge transfer producing charged ligand clusters is shown to not occur.