Lord P, Olmstead MM, Balch AL
Department of Chemistry, University of California, Davis, Davis, CA 95616 (USA).
Angew Chem Int Ed Engl. 1999 Sep;38(18):2761-2763. doi: 10.1002/(sici)1521-3773(19990917)38:18<2761::aid-anie2761>3.0.co;2-y.
Metalation of octaethylbilindione (H(3)OEB) with palladium(II) acetate produces the novel tetranuclear complex [Pd(4)(OEB)(2)] in which a (Pd(I)(2))(2+) unit is sandwiched between two helical Pd(OEB) units (see picture). Treatment of [Pd(4)(OEB)(2)] with pyridine/ethanol gives the odd-electron helical complex [Pd(OEB)].