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Reactions of tetra-µ-carboxylato-diruthenium(<scp>II</scp>,<scp>II</scp>) compounds. X-Ray crystal structures of Ru<sub>2</sub>(µ-O<sub>2</sub>CCF<sub>3</sub>)<sub>4</sub>(thf)<sub>2</sub>, Ru<sub>2</sub>(µ-O<sub>2</sub>CR)<sub>4</sub>(NO)<sub>2</sub>(R = Et or CF<sub>3</sub>), and {Na<sub>3</sub>[Ru<sub>2</sub>(µ-O<sub>2</sub>CO)<sub>4</sub>]·6H<sub>2</sub>O}<sub>n</sub>
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1987
Year
Inorganic ChemistryChemical EngineeringEngineeringCoordination ComplexDimers Ru2Organometallic CatalysisChemistryX-ray Crystal StructuresCrystallographyAxial LigandsInorganic SynthesisCarbonyl Ru2Inorganic Compound
Improved procedures for the synthesis of the diruthenium(II) carboxylates, Ru2(µ-O2CR)4L2, and substitutions of either the bridged carboxylate or axial ligands (L) are described. Among new bridged compounds are the trifluoroacetate, Ru2(µ-O2CCF3)4, the carbonate, {Na3[Ru2(µ-O2CO)4]·6H2O}n, and the triazenide, Ru2(µ-N3Ph2)4; adducts of the triazenide include the nitrosyl, Ru2(µ-N3Ph2)4(NO)2, the isocyanide, Ru2(µ-N3Ph2)4(ButNC), and the carbonyl Ru2(µ-N3Ph2)4(CO)2. Reactions of the carboxylates with donors such as isocyanides, pyridine (py), phosphines, or CO leads in some cases to bridge cleavage and products such as trans-Ru(O2CR)2(py)4 or Ru(O2CR)2(PPh3)2(R = Me or CF3), while the reactions with NO yield the diamagnetic adducts Ru2(µ-O2CR)4(NO)2. Infrared, n.m.r., e.s.r., and electronic spectra are recorded together with cyclic voltammetric studies. The X-ray crystal structures of the dimers Ru2(µ-O2CCF3)4(thf)2(thf = tetrahydrofuran) and Ru2(µ-O2CR)4(NO)2(R = Et or CF3), and the polymer {Na3[Ru2(µ-O2CO)4]·6H2O}n are reported.