trans-Chloridobis(4-methyl­pyridine-κN)(4,4′,4′′-tri-tert-butyl-2,2′:6′,2′′-terpyridine-κ³N,N′,N′′)ruthenium(II) hexa­fluoridophosphate acetone monosolvate

The title compound, [RuCl(C₆H₇N)₂(C₂₇H₃₅N₃)]PF₆·C₃H₆O, was obtained unintentionally as the product of the reaction of 1,1′-methyl­enebis(4-methyl­pyridinium) hexa­fluoriso­phos­phate and RuCl₃(tpy*) (tpy* is 4,4′,4′′-tri-tert-butyl-2,2′:6′,2′′-terpyridine) in the presence of triethyl­amine and LiCl. The mol­ecular structure of the complex displays an octa­hedral geometry around the Ru^II ion and the unit cell contains an acetone solvent mol­ecule and one orientationally disordered PF₆⁻ anion (occupancy ratio 0.75:0.25) which is hydrogen bonded to two H atoms of the tpy* ligand of the nearest [RuCl(pic)₂(tpy*)]⁺ cation (pic is 4-methyl­pyridine). One of the tert-butyl groups of the tpy* ligand is also disordered over two sets of sites in a 0.75:0.25 ratio.

Alternariol 9-O-methyl ether

The title compound (AME; systematic name: 3,7-dihy­droxy-9-meth­oxy-1-methyl-6H-benzo[c]chromen-6-one), C₁₅H₁₂O₅, was isolated from an endophytic fungi Alternaria sp., from Catharanthus roseus (common name: Madagascar periwinkle). There is an intramolecular O—H...O hydrogen bond in the essentially planar mol­ecule (r.m.s. deviation 0.02 Å). In the crystal, the molecule forms an O—H...O hydrogen bond with its centrosymmetric counterpart with four bridging inter­actions (two O—H...O and two C—H...O). The almost planar sheets of the dimeric units thus formed are stacked along b axis via C—H...π and π–π contacts [with C...C short contacts between aromatic moieties of 3.324 (3), 3.296 (3) and 3.374 (3) Å].