β-Methyl-γ,γ-bis(8-quinolinoxy)germa-γ-lactone

In the hexacoordinated title germanium compound [alternatively called (butanoato-κ²C³,O)bis(8-quinolato-κ²N,O)germanium(IV)], [Ge(C₉H₇NO)₂(C₄H₆O₂)], the Ge atom adopts a slightly distorted octahedral geometry, where the Ge—N coordinate covalent bonds [mean 2.079 (8) Å] are significantly longer than the Ge—O [mean 1.904 (8) Å] and Ge—C [1.976 (3) Å] covalent bonds.

Thallium tetra­kis(penta­fluoro­phen­yl)borate

The crystal structure of thallium perfluoro­tetra­phenyl­borate, Tl⁺·B(C₆F₅)₄⁻, consists of discrete partial occupancy Tl cations lying on threefold rotation axes, surrounded by perfluoro­tetra­phenyl­borate anions, with Tl...F inter­actions in the range 2.942 (4)–3.663 (4) Å.

tert-Butyl­amido­dichloro­phosphine oxide

The monomeric units in the title compound, C₄H₁₀Cl₂NOP, are linked together by N—H...O hydrogen bonds to give parallel linear strands along the b axis.

Absolute configuration of (R)-synephrine hydro­chloride

The title compound, 2-hydr­oxy-2-(4-hydroxy­phenyl)-N-methyl­ethanaminium chloride, C₉H₁₄NO₂⁺·Cl⁻, has been isolated for the first time from the genus Harrisonia. Its structure is stabilized by extensive intra- and inter­molecular hydrogen bonds of type O—H...O, N—H...O, N—H...Cl and C—H...Cl, resulting in a three-dimensional network. Additional weak π–π stacking inter­actions between adjacent mol­ecules further stabilize the crystal structure.