Bis[η5-(2,4-dimethyl-1-oxapentadienyl)]ruthenium(II): the first homoleptic open ruthenocenes with non-hydrocarbon ligands
Abstract
The new stereoisomeric bis(1-oxapentadienyl)ruthenium(II) complexes 3a and b are obtained by reductive dehalogenation of RuCl3·aq. in the presence of 4-methylbuten-2-ones; they have been characterized spectroscopically and their crystal structures have been determined, showing a distorted syn-gauche and the unusual anti-eclipsed arrangement of the ligands, respectively.