Reaction of [OsO₄] with C₇H₇MgBr (C₇H₇ = 2-methylphenyl) followed by column chromatography afforded the reported osmium tetraaryl [Os(C₇H₇)₄] along with the oxo-osmium(VI) [OsO(C₇H₇)₂] (1) and the dioxo-osmium(VI) [OsO₂(C₇H₇)₄] (2) complexes. Treatment of [OsO₄] with C₈H₉MgBr (C₈H₉ = 2,5-dimethylphenyl) gave a mixture of [Os(C₈H₉)₄] (3) and [OsO(C₈H₉)₄] (4) while that with C₈H₉OMgBr (C₈H₉O = 4-methoxy-2-methylphenyl) afforded [OsO(C₈H₉O)₄] (5). Oxidation of 3 with 3-chloroperoxybenzoic acid afforded 4 in good yield. The solid-state structures of 1 and 4 have been established by X-ray crystallography. _{8 9 4 3 3 8 9 8 8 3 8 9 3 8 8}...[ Read more ]

Reaction of [OsO₄] with C₇H₇MgBr (C₇H₇ = 2-methylphenyl) followed by column chromatography afforded the reported osmium tetraaryl [Os(C₇H₇)₄] along with the oxo-osmium(VI) [OsO(C₇H₇)₂] (1) and the dioxo-osmium(VI) [OsO₂(C₇H₇)₄] (2) complexes. Treatment of [OsO₄] with C₈H₉MgBr (C₈H₉ = 2,5-dimethylphenyl) gave a mixture of [Os(C₈H₉)₄] (3) and [OsO(C₈H₉)₄] (4) while that with C₈H₉OMgBr (C₈H₉O = 4-methoxy-2-methylphenyl) afforded [OsO(C₈H₉O)₄] (5). Oxidation of 3 with 3-chloroperoxybenzoic acid afforded 4 in good yield. The solid-state structures of 1 and 4 have been established by X-ray crystallography.

Direct functionalization of osmium(IV) tetraaryl complex [Os(C₈H₉)₄] was studied. Reaction of 3 with CH₃COCl and AlCl₃ yielded [Os(C₈H₉)(C₈H₈-COMe-p)₃] 10 and [Os(C₈H₉)₃C₈H₈-COMe-p)] 11. Formylation of 3 with [TiCl₄] and dichloromethyl methyl ether yielded [Os(C₈H₉)₃(C₈H₈-CHO-p)] 12 and [Os(C₈H₉)₂(C₈H₈-CHO-p)₂] 13. Bromination of 3 with pyridinium tribromide in the presence of Fe powder to give [Os(C₈H₈-Br-p)₄] 15, which undergoes Suzuki coupling with arylboronic acids to afford a series of homoleptic functionalised aryls of osmium(IV).

Ir(III) orthometallated complexes [Ir₂Cl₂L₄], (L = 4'-substituted 2-phenylpyridine Rppy), reacted with S-donor ligands to form monomeric [Ir(t-Buppy)(S^S)] (S^S = Et₂NCS₂^- and (MeO)₂PS₂^-).

Treatment of lithium (4-oxazolinyl)phenyl prepared in situ from bromo(4-oxazolinyl)benzene and nBuLi with [Au(PPh₃)Cl] and [Pt(COD)Cl₂] (COD = 1,5 -cyclooctadiene) gave oxazolinylphenyl gold(I) and oxazolinylphenyl platinum(II) complexes respectively. These (oxazolinyl)phenyl complexes are capable for binding metal ions such as Pd(II), Zn(II) to give dinuclear and trinuclear complexes.