Bis[η5-(2,4-dimethyl-1-oxapentadienyl)]ruthenium(II): the first homoleptic open ruthenocenes with non-hydrocarbon ligands

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.

[1]  David R. Wilson,et al.  The preparation of the 2,4-di(t-butyl)pentadienyl anion and its Ti(II), Cr(II), and Zn(II) complexes , 1991 .

[2]  M. Zaworotko,et al.  Synthesis, characterization, and dynamic behaviour of pseudoferrocene complexes , 1990 .

[3]  S. Peng,et al.  Synthesis, characterization, and nucleophilic substitution-addition reactions of manganese-oxapentadienyl compounds. Structural characterization of [cyclic] (.eta.5-CH2CHCHCOCH3)Mn(CO)2L (L = CO, PPH3) and the first isolation of novel .eta.5-1-azapentadienyl complexes , 1990 .

[4]  R. D. Ernst.  Structural and reactivity patterns in transition-metal-pentadienyl chemistry , 1988 .

[5]  R. J. Angelici,et al.  CS‐Bindungsbruch in einem (π‐Thiophen)ruthenium‐Komplex , 1987 .

[6]  R. J. Angelici,et al.  CS Bond Cleavage in a π‐Thiophene Ruthenium Complex , 1987 .

[7]  P. Powell.  Acyclic Pentadienyl Metal Complexes , 1987 .

[8]  R. Roulet,et al.  Chemistry derived from ruthenium atoms. 2. Synthesis and reactivity of the monocarbonyl complexes formed from ruthenium-cyclohexadiene cocondensates , 1986 .

[9]  David R. Wilson,et al.  Bonding and conformational relationships in the open metallocenes: solid-state structures of bis(2,4-dimethylpentadienyl) compounds of vanadium and chromium , 1984 .

[10]  R. D. Ernst,et al.  Synthesis and characterization of bis(pentadienyl)ruthenium compounds , 1983 .

[11]  P. Maitlis,et al.  Pentamethylcyclopentadienyl-rhodium and-iridium complexes XIV. The solvolysis of coordinated acetone solvent species to tris(μ-difluorophosphato)bis[η5-pentamethylcyclopentadienylrhodium(III)] hexafluorophosphate, to the η5-(2,4-dimethyl-1-oxapenta-1,3-dienyl)(pentamethylcyclopentadienyl)iridium cat , 1977 .

[12]  M. Green,et al.  The reaction of 1,3-dienes with phenylmanganese carbonyl , 1968 .