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The reaction of equimolar quantities of trans -[ReOCl 3 (PPh 3 ) 2 ] and 8-hydroxyquinoline (Hhqn) in benzene led to the isolation of the six-coordinate complex [ReOCl 2 (hqn)(PPh 3 )] ( 1 ). With 2-pyridine-ethanol (Hhep) the compound [ReOCl 2 (hep)(PPh 3 )] ( 2 ) was obtained. Both hqn and hep ligands act as monoanionic bidentate N , O -donor chelates. Although the two complexes are very similar, there are some significant differences in certain bond distances and angles in them. Both complexes contain the nearly linear trans O=Re–O axis, with this angle equal to 160.9(2)° and 167.8(1)° in 1 and 2 , respectively. [ABSTRACT FROM AUTHOR]

The reaction of a twofold molar excess of 2-aminothiophenol (H2L) with trans-[ReOCl3(PPh3)2] in benzene led to the isolation of the oxo-free rhenium(V) complex [ReCl(PPh3)L2] (1), IR, ¹H NMR and X-ray crystallographic results indicate that the ligands L coordinate in a dianionic form to the metal and that the complex has the unusual skew-trapezoidal bipyramidal geometry. The ligands L have an average bite angle of 78,8(1)°, with average Re-N and Re-S bond lengths equal to 1,978(5) and 2,297(1) A, respectively. [ABSTRACT FROM AUTHOR]

The complex [ReOI 2 (ame)(PPh 3 )] (Hame=2-(2-aminophenyl)ethanol) was prepared from trans -[ReOI 2 (OEt) (PPh 3 ) 2 ] and Hame in benzene. It contains an unusually long Re=O bond (1.717(5) Å) and a large trans O=Re-O (ethanolate) bond angle of 171.4(2)°. [ABSTRACT FROM AUTHOR]