Premium
Crystal Structure and ESR Study of a Bimetallic Copper/Iron Crown Ether Inclusion Complex
Author(s) -
Chetcuti Peter A.,
Liégard André,
Rihs Grety,
Rist Günther,
Schweiger Arthur
Publication year - 1991
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19910740721
Subject(s) - chemistry , bimetallic strip , crystallography , copper , dimer , crown ether , nickel , crystal structure , antiferromagnetism , ether , ion , metal , organic chemistry , physics , condensed matter physics
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 CuCu separation of 3.73 Å and a novel out‐of‐plane CuN 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.