Both six-membered rings in the title bi­cyclo­[3.3.1] system, adopt a chair conformation. Hydrogen bonds from the hy­droxy group to the ether bridge connect the mol­ecules into zigzag chains: single-enantiomer chains propagating along the b-axis direction form the crystal.

The title hydrated salt, a new monoclinic polymorph, crystallizes in space group P21/c. The components pack in sheets in the ab plane and these sheets are hydrogen bonded to their neighbours, generating a three-dimensional network.

The packing of the title solvate features hetero-halogen⋯halogen (Cl⋯F), and chalcogen (S⋯O) bonding, as well as non-standard offset π–π stacking.

Addendum to Pham & Bader [IUCrData (2025), 10, x241243].

The short C—NH2 bond length of 1.3469 (12) Å in the title mol­ecule is indicative of substantial involvement of the aniline N-atom in the aromatic π bonding system of the ring. In the extended structure, N—H⋯O hydrogen bonds link the mol­ecules into [001] tapes, which aggregate into zipper-like folded ribbons. Layers of parallel ribbons stack along a to complete the structure.

In the solid, state di­phenyl­tin(IV)-hydroxide-iodide-N,N′-di­methyl­propyl­ene-urea, Ph2Sn(OH) ·DMPU, consists of centrosymmetric dimers exhibiting the characteristic structural features of diorganotin(IV)-hydroxide-halides.

Cubic Mg44.29Ru7 is related to the previously reported Mg43.83Ru7.17 to which it shows differences relative to some occupancies of the Ru and Mg sites,

In the title compound, the dihedral angle between the coumarin ring system and the phenyl ring is 63.46 (5)°. In the crystal, the mol­ecules are linked by weak C—H⋯O hydrogen bonds and aromatic π–π stacking inter­actions

Two crystallographically independent planar mol­ecules are present in the title compound that differ slightly in some of the bond angles.

The l-leucinium cations in the title compound adopt extended conformations that maximize the separation between the methyl groups [–CH(CH3)2] and the polar NH3+ and COOH groups.

In the title mol­ecule, two essentially planar and nearly parallel branches are connected to the aniline unit and the angle between the alkynes amounts to 26 (4)°. Weak intra­molecular aromatic π–π stacking occurs.

The title compound forms a crystal structure with near-coplanar heteroaryl units and perpendicular aromatic rings, assembling into a corrugated two-dimensional network along the crystallographic ac plane that is consolidated into a three-dimensional supra­molecular architecture via hydrogen bonding.

The the title compound, isolated after a Sonogashira coupling reaction, crystallizes in the monoclinic space group C2/c.

In the title compound, the acetamide substituent is twisted out of the phenyl plane, forming a dihedral angle of 58.61 (7)°. In the extended structure, each mol­ecule donates two hydrogen bonds [N—H⋯O(carbon­yl) and O—H⋯O(carbon­yl)] and thus also accepts two such hydrogen bonds. The chlorine atom is not involved in the hydrogen bonding.

The solvated title compound has a cationic CoIII-amino­diphosphine and a dimeric CoII-di­phenyl­phospho­nate anionic species.

The Cu2+ cation in the polymeric title compound has an N2O3 coordination set, inter­mediate between a square pyramid and a trigonal bipyramid.

The title compound was obtained in good yield by a standard one-pot method. The mol­ecule has the following substituents: a chlorine atom at the 4-position, a phenyl group at the 2-position, and an aldehyde (–CHO) group at the 3-position of the 2H-chromene ring system.

The title compound consists of almost planar mol­ecules with the chlorine atom protruding from this plane.

Diffraction datasets of membrane protein crystals were used to assess the diffraction anisotropy phenomenon.

A chiral compound, m-TAP, was synthesized and its crystal structure was determined, revealing key stereochemical and supra­molecular features.

A naphtho­[1,8-de][1,3,2]-di­aza­borinine-substituted anthracene structure is reported.

The title neodymium salt includes anions and cations linked by N—H⋯O hydrogen bonds to form zigzag chains extending along [001] in the crystal.

The solid-state structure of the hydro­fumarate salt of the synthetic psychedelic 4-hy­droxy-N,N-diiso­propyl­tryptamine (4-HO-DiPT) is reported.

The crystal structure of a tetra­halogenated bi­cyclo­nonane, C9H12Br2Cl2, is reported. The mol­ecule adopts a distorted twist-chair conformation. The cyclo­propane ring is almost parallel to the plane formed by the four methyl­ene carbon atoms.

The crystal structure of the title di­aqua­bis­(lipoato-κ2O,O′)manganese(II) complex reveals a distorted octa­hedral geometry around the MnII centre. The supra­molecular framework is consolidated by O—H⋯O and C—H⋯S hydrogen bonds.