trans-3-Bromo-2-chloro­indan-1-one

Structural analysis of trans-3-bromo-2-chloro­indan-1-one, C₉H₆BrClO, confirms the relative stereochemistry of the Cl and Br atoms.

Bis(2,2′-bipyridine-κ²N,N′)platinum(II) bis­(perchlorate)

The title complex, [Pt(C₁₀H₈N₂)₂](ClO₄)₂, adopts a square-planar geometry in which all four N-atom donors are strictly coplanar as the Pt ion lies on an inversion centre. However, the 2,2′-bipyridine ligand deviates significantly from planarity, as demonstrated by the angle of 20.52 (11)° between the mean planes of the two pyridine rings.

(±)-Adamantane-1,2-diyl diacetate

The first structural analysis of a 1,2-disubstituted adamantane, (±)-adamantane-1,2-diyl diacetate, C₁₄H₂₀O₄, is reported. The molecules pack in columns which are held together by inter- and intracolumn C—H...O interactions.