Crystal Structure and ESR Study of a Bimetallic Copper/Iron Crown Ether Inclusion Complex

✍ Scribed by Peter A. Chetcuti; André Liégard; Grety Rihs; Günther Rist; Arthur Schweiger

• Publisher: John Wiley and Sons
• Year: 1991
• Tongue: German
• Weight: 512 KB
• Volume: 74
• Category: Article
• ISSN: 0018-019X
• DOI: 10.1002/hlca.19910740721

✦ Synopsis

Abstract

Bimetallic inclusion complexes have been synthesized by a secondary coordination interaction between the guest complex [Fe(η^5^‐C~5~H~5~)(CO)~2~(NH~3~)][PF~6~] and copper(II) complex 1a or nickel(II) complex lb containing crown‐ether hosts. The X‐ray crystal‐structure analysis established that the Cu,Fe inclusion complex 2 crystallize as a centrosymmetric dimer with a CuCu separation of 3.73 Å and a novel out‐of‐plane CuN interaction. The magnetic parameters for 2 were obtained by ESR and ENDOR spectroscopy. ESR susceptibility measurements down to 6 K exclude the presence of any antiferromagnetic coupling interaction between the Cu^II^centers of the dimer.