A Zinc(II) Complex Composed of a Tridentate Ligand Bearing Podand Pyrenyl Moieties

✍ Scribed by Toshiyuki Moriuchi; Masahito Nishiyama; Toshikazu Hirao

• Publisher: John Wiley and Sons
• Year: 2002
• Tongue: English
• Weight: 244 KB
• Volume: 2002
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/1099-0682(20022)2002:2<447::aid-ejic447>3.0.co;2-t

✦ Synopsis

The structural characterization and function of Zn II complexes composed of a tridentate ligand bearing podand pyrenyl moieties as a fluorophore [2,6-pyridinedicarboxaldehydebis(1-pyrenylmethylimine) (L 1 )] are described. The tridentate podand ligand L 1 forms a 2:1 complex, [Zn(L 1 ) 2 (BF 4 ) 2 ], with Zn(BF 4 ) 2 although the 1:1 complex [Zn(L 1 )(OAc) 2 ] is obtained with Zn(OAc) 2 . The X-ray crystal structure determination of [Zn(L 1 ) 2 (BF 4 ) 2 ] reveals that two tridentate podand ligands L 1 coordinate meridionally to Zn II ion to give an orthogonally oriented molecular turn around the approximately octahedral Zn II center. One pyridyl moiety of L 1 is sandwiched in between two podand pyrenyl moieties of another L 1 through π-π interactions, together with an