N-(2-Pyridylmeth­yl)phthalimide

In the title compound, C14H10N2O2, the phtalimide and 2-pyridylmethyl units are almost perpendicular, with an inter­planar angle of 85.74 (2)°. In the crystal, mol­ecules are linked by weak C—H⋯O inter­actions, forming chains running along the b axis. The packing is further stabilized by offset π–π inter­actions between adjacent pyridine rings, with a centroid–centroid distance of 3.855 (2) Å

{2-Hydr­oxy-6-[(2-oxidophen­yl)imino­methyl-κ2 N,O]phenolato-κO 1}phenyl­boron

The [4.3.0]heterobicyclic title structure, C19H14BNO3, is composed of a five-membered OBNC2 ring and a six-membered OBNC3 ring, each of which has an approximate envelope conformation. The coordination geometry of the B atom is distorted tetra­hedral. In the crystal structure, centrosymmetrically related mol­ecules are associated through pairs of O—H⋯O hydrogen bonds

2,4-Difluoro­phenyl­boronic acid

The mol­ecular structure of the title compound, C6H5BF2O2, is essentially planar (mean deviation = 0.019 Å), indicating electronic delocalization between the dihydroxy­boryl group and the aromatic ring. In the crystal structure, inversion dimers linked by two O—H⋯O hydrogen bonds arise. An intra­molecular O—H⋯F hydrogen bond reinforces the conformation and the same H atom is also involved in an inter­molecular O—H⋯F link, leading to mol­ecular sheets in the crystal

3-Amino­phenyl­boronic acid monohydrate

In the title compound, C6H8BNO2·H2O, the almost planar boronic acid mol­ecules (r.m.s. deviation = 0.044 Å) form inversion dimers, linked by pairs of O—H⋯O hydrogen bonds. The water mol­ecules link these dimers into [100] chains by way of O—H⋯O hydrogen bonds, and N—H⋯O links generate (100) sheets

Poly[aqua­bis(μ-benzene-1,2-dicarboxyl­ato)ethano­ltetra­lithium]

In the crystal structure of the title compound [Li4(C8H4O4)2(C2H5OH)(H2O)]n, there are four crystallographically independent metal centers each of which is coordinated by four O atoms. The benzene-1,2-dicarboxyl­ate groups act as bidentate–bridging ligands producing a two-dimensional coordination network parallel to the ab plane. The coordination polymer is further stabilized by coordination of water and ethanol mol­ecules by the Li+ ions. Simultaneously, the water and ethanol mol­ecules are involved in O—H⋯O and C—H⋯π inter­actions

4-Meth­oxy-N-[6-methyl-2,3-dihydro-1,3-benzothia­zol-2-yl­idene]benzene­sulfonamide

The title compound, C15H14N2O3S2, is of inter­est with respect to its biological activity. The crystal structure is stabilized by inter­molecular N—H⋯N, C—H⋯O and C—H⋯π hydrogen-bonding inter­actions, as well as offset π–π inter­actions [distance between the centroids of the aryl and thiazole rings of adjacent molecules of 3.954 (2) Å]

Poly[potassium-μ-2-[2-(carboxymethyl)phenyl]acetato]

In the title salt, [K(C10H9O4)]n, the K+ ions are coordinated by six O atoms from three different anions, and there is a cation–π inter­action at ca 3.14 Å. The 2-[2-(carboxymethyl)phenyl]acetate anions are stabilized by intramolecular O—H⋯O hydrogen bonds, and the K+ cations are linked into one-dimensional coordination polymers running along the b axis; these are further inter­connected by weak C—H⋯O hydrogen bonds

(E)-2-{[2-(2-Hy­droxy­ethyl­amino)­ethyl­imino]­meth­yl}phenol

The asymmetric unit of the title compound, C11H16N2O2, contains two independent conformational isomers which show intra­molecular aromatic–imine O—H⋯N hydrogen bonds. In the crystal, neighboring mol­ecules are linked through inter­molecular aliphatic–aliphatic O—H⋯N, aliphatic–aromatic N—H⋯O and C—H⋯O inter­actions into hydrogen-bonded layers parallel to the ab plane

2-Methyl-2-(4-nitro­phen­oxy)propanoic acid

The title compound, C10H11NO5, is of inter­est with respect to its anti­dyslipidemic activity. It was prepared by reaction of 4-nitro­phenol with ethyl 2-bromo-2-methyl­propionate followed by ethyl ester hydrolysis. In the crystal, mol­ecules are linked into centrosymmetric dimers by inter­molecular O—H⋯O hydrogen bonds and the dimers are connected into chains by weak C—H⋯O inter­actions. The packing is further stabilized by offset π–π inter­actions between adjacent benzene rings with a centroid–centroid distance of 3.8643 (17) Å

2-Methyl-2-(4-nitro­phenyl­sulfanyl)­propanoic acid

The title compound, C10H11NO4S, is of inter­est with respect to its biological activity. The mol­ecules are linked into centrosymmetric dimers by inter­molecular O—H⋯O hydrogen bonds and the dimers are further connected into chains by weak C—H⋯O inter­actions