The mol-ecular shape of the title compound, C16H12O7, is bent around the central CH2-O bond. The two benzene rings are almost perpendicular to one another, making a dihedral angle of 87.78 (7)°. In the crystal, each mol-ecule is linked to three others by three pairs of O-H⋯O hydrogen bonds, forming undulating sheets parallel to the bc plane and enclosing R 2 (2)(8) ring motifs. The sheets are l...

This technical tip describes the use of a novel binder system based upon sulfopolyester chemistry which eliminates the deficiencies of current binder systems for joinery applications providing enhanced characteristics. Eastek polymer dispersions Eastek polymer dispersions are aqueous dispersions of sulfopolyester polymers based upon monomer building blocks, acids, and 5-(sodiosulpho) isophthali...

A metal-organic framework based on 5-iodo-isophthalic acid (5-iipaH2) and the ancillary nitrogen ligand 1,3-bi(4pyridyl)propane (bpp), namely [Cd(5-iipa)(bpp)(H2O)]n (1), has been synthesized, and characterized by IR spectroscopy, elemental analysis, thermogravimetry, and X-ray crystallography. Complex 1 shows a two-fold interpenetrating 3D diamond-like architecture that is stabilized by hydrog...

The asymmetric unit of the title compound, C(8)H(6)N(2)O(2)·C(8)H(5)NO(6)·H(2)O, contains mol-ecules of 1,4-dihydro-quinoxaline-2,3-dione, 5-nitro-isophthalic acid and a solvent water. In the crystal structure, mol-ecules are linked into a three-dimensional network by inter-molecular N-H⋯O and O-H⋯O hydrogen bonds.

The widespread use of polymeric materials in various industries and fields activity is explained by the thermal stability polymers, their high strength characteristics, durability reliability synthetic materials. introduction additives can change physical-mechanical, thermophysical, optical, electrical, frictional other performance characteristics original (base) polymer. purpose article to inv...

Pyrene chromophores carrying different rigid rod spacer groups (ethynylene, ethynylene-phenylene-ethynylene, and ethynylene-bicyclo[2.2.2]octylene-ethynylene) and bound to TiO2 nanostructured materials via an isophthalic acid (Ipa) anchor group have been investigated using quantum chemical calculations in order to elucidate structural and electronic properties of dye-sensitized semiconductor st...

Two novel Zn(II) metal-organic frameworks (MOFs) constructed by trinuclear-triangular and paddle-wheel units, namely {[Zn(5)(dmtrz)(3)(IPA)(3)(OH)]·DMF·H(2)O}(n) (MAC-4, Hdmtrz = 3,5-dimethyl-1H-1,2,4-triazole, H(2)IPA = isophthalic acid, DMF = dimethyl formamide) and {[Zn(5)(dmtrz)(3)(OH-IPA)(3)(OH)]·DMF·5H(2)O}(n) (MAC-4-OH, OH-H(2)IPA = 5-hydroxyisophthalic acid), were solvothermally synthes...

We demonstrate that isophthalic acid-ended telechelic poly(1,5-cyclooctadiene)s (APCODs) form thermo-reversible gels in non-polar solvent with a unique molecular mechanism for their thermo-reversibility. Like other associative telechelic polymers, A-PCODs form “flower-like” micelles at low concentration and form gels through bridging at higher concentration which exhibit linear viscoelasticity....