Reactions of perchlorates of iron(II), nickel(II), and zinc(II) with 2,2¢:6¢,2¢¢:6¢¢,2¢¢¢-quaterpyridine (qtpy) gave the first crystallographically established bis-qtpy metal complexes of formula [M(qtpy)2][ClO4]2 (M ) Fe, Ni, Zn). Coordination of two terdentate quaterpyridines to the same center produces a distorted octahedron of six nitrogen atoms around the metal, leaving two pendant pyridyl groups, one for each quaterpyridine. For the diamagnetic zinc system, an NMR investigation has been carried out in order to establish the conditions to obtain the intermediate mono-qtpy complex, of formula [Zn(qtpy)(H2O)2][ClO4]2, which has also been crystallographically established. The corresponding hexafluorophosphate derivatives [M(qtpy)2][PF6]2 (M ) Ni and Zn) were prepared in DMF at room temperature.

Bis-qtpy (qtpy=2,2’:6’,2”:6”,2”’-quaterpyridine) metal complexes, [M(qtpy)2]2+

BELLI, DANIELA;CALDERAZZO, FAUSTO;LABELLA, LUCA;MARCHETTI, FABIO
2004

Abstract

Reactions of perchlorates of iron(II), nickel(II), and zinc(II) with 2,2¢:6¢,2¢¢:6¢¢,2¢¢¢-quaterpyridine (qtpy) gave the first crystallographically established bis-qtpy metal complexes of formula [M(qtpy)2][ClO4]2 (M ) Fe, Ni, Zn). Coordination of two terdentate quaterpyridines to the same center produces a distorted octahedron of six nitrogen atoms around the metal, leaving two pendant pyridyl groups, one for each quaterpyridine. For the diamagnetic zinc system, an NMR investigation has been carried out in order to establish the conditions to obtain the intermediate mono-qtpy complex, of formula [Zn(qtpy)(H2O)2][ClO4]2, which has also been crystallographically established. The corresponding hexafluorophosphate derivatives [M(qtpy)2][PF6]2 (M ) Ni and Zn) were prepared in DMF at room temperature.
Belli, Daniela; Calderazzo, Fausto; M., Curiardi; Labella, Luca; Marchetti, Fabio
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11568/89308
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 26
  • ???jsp.display-item.citation.isi??? 25
social impact