Coordination polymers of 5-substituted isophthalic acid.
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ABSTRACT:
SUBMITTER: McCormick LJ
PROVIDER: S-EPMC4786948 | biostudies-literature |
REPOSITORIES: biostudies-literature
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Project description:To investigate the influence of different 5-functionalized isophthalate ligands on the self-assembly and structures of Zn(ii)-based coordination polymers (CPs), we selected four 5-functionalized isophthalate ligands coordinated with 4,4'-bipyridyl (bpy) and Zn(ii) salt, and four new CPs, namely, {[Zn(EtOip)(bpy)]·2H2O} n (1), {[Zn(PrOip)(bpy)]·2H2O} n (2), [Zn( n BuOip)(bpy)] n (3) and [Zn( n PeOip)(bpy)] n (4) (where EtOip = 5-ethoxyisophthalate, PrOip = 5-n-propoxyisophthalate, n BuOip = 5-n-butoxyisophthalate and n PeOip = 5-n-pentyloxyisophthalate), were prepared under hydrothermal conditions. Moreover, we considered changing the features of the N-ligands (length), which are expected to alter the structural diversities and properties of the resultant CPs. We used 1,2-bis(4-pyridyl)ethene (bpe) to replace bpy; and obtained four new coordination polymers (CPs), namely, {[Zn(EtOip)(bpe)]·H2O} n (5), {[Zn(PrOip)(bpe)]·H2O} n (6), {[Zn( n BuOip)(bpe)]·0.5DMF} n (7) and [Zn( n PeOip)(bpe)] n (8). All of these compounds were characterized by single crystal X-ray diffraction, infrared spectroscopy, elemental analysis and powder X-ray diffraction measurements. Single-crystal X-ray analysis reveals that the structure of complexes 1-4 are very similar, although different functionalized-isophthalate ligands are employed. Complexes 5, 6 and 7 possess a two-dimensional (2D) layered structure, and the 2D framework of complexes 5 and 7 can be rationalized to be a threefold interpenetrating four-connected {44·62} topological sql network, while 6 exhibits a twofold interpenetrating 4-connected 2D framework. Compound 8 features a 6-connected 3D topology net based on a novel bimetallic unit [(Zn)2(CO2)2] linked by mixed n PeOip and bpe ligands. Moreover, thermal and photoluminescence properties of the synthesized complexes were also studied in detail.
| S-EPMC9078387 | biostudies-literature
Project description:In the crystal structure of the title compound, C(8)H(5)NO(6), both carboxyl groups are involved in inter-molecular centrosymmetric cyclic O-H?O hydrogen-bonding associations, which give a zigzag chain structure extending along (2[Formula: see text]1). Weak ?-? stacking inter-actions are also present [minimum ring centroid separation = 3.893?(4)?Å].
| S-EPMC3254540 | biostudies-literature
Project description:In the crystal structure of the title compound, C(8)H(5)FO(4), the complete molecule is generated by crystallographic twofold symmetry with two C atoms and the F atom lying on the axis. The mol-ecule is almost planar with the carboxyl group twisted with respect to the mean plane of the benzene ring by a dihedral angle of 2.01 (1)°. In the crystal, inter-molecular O-H⋯O hydrogen bonds and C-H⋯F inter-actions connect the mol-ecules into a two-dimensional supra-molecular array.
| S-EPMC3052173 | biostudies-literature
Project description:In the course of development of novel capping ligands with variable steric factor, which will be used as an organic coating for metal oxide nanoparticles, a base-catalyzed nucleophilic oxirane ring-opening addition reaction between dimethyl 5-hydroxyisophthalate and allyl glycidyl ether was studied. The allyl-terminated 1-1, 1-2 and 1-3 adducts and dihydroxylated derivative of the 1-1 adduct, 5-diglyceroxy isophthalic acid, were synthesized. The latter binds to the surface of 5 nm ?-Fe2O3 nanoparticles in reaction with their surfactant-free diethylene glycol colloids.
| S-EPMC4138530 | biostudies-literature
Project description:In the crystal structure of the title hydrate, C(8)H(4)Br(2)O(4)·H(2)O, O-H⋯O hydrogen bonds link the mol-ecules into a two-dimensional network parallel to (10-2). The acid groups of the main mol-ecule and the water mol-ecule are all involved in the supra-molecular structure. The dihedral angles between the benzene ring and the acid groups are 37.8 (4) and 36.4 (5)°, while the dihedral angle between the acid groups is 10.9 (4)°.
| S-EPMC3435670 | biostudies-literature
Project description:In the title compound, C(13)H(9)NO(4), the two carb-oxy-lic groups and the benzene ring are approximately co-planar with a maximum atomic deviation 0.175?(4)?Å, while the pyridine ring is oriented at a dihedral angle of 31.07?(18)° with respect to the benzene ring. In the crystal, mol-ecules are linked by O-H?O, O-H?N and weak C-H?O hydrogen bonds, forming a three-dimensional supra-molecular framework.
| S-EPMC3009156 | biostudies-literature
Project description:The title compound, C(8)H(4)I(3)NO(4)·H(2)O, shows an extensive hydrogen-bond network; in the crystal structure, mol-ecules are linked by O-H⋯O, N-H⋯O and O-H⋯N hydrogen bonds involving all possible donors and also the water mol-ecule.
| S-EPMC2961876 | biostudies-literature
Project description:In the heteromolecular title structure, C(10)H(8)N(2)S·C(8)H(6)O(4), the two components are linked by O-H⋯N hydrogen bonds to form a one-dimensional chain. These chains are further inter-connected by weak inter-molecular C-H⋯O hydrogen bonds and weak C-H⋯π inter-actions to generate a three-dimensional supra-molecular structure.
| S-EPMC2960055 | biostudies-literature
Project description:Co-crystallization of 5-fluoro-isophthalic acid (H(2)fip) with 4,4'-bipyridine (bipy) leads to the formation of the title compound [(H(2)fip)(bipy)], C(8)H(5)FO(4)·C(10)H(8)N(2), with an acid-base molar ratio of 1:1. The acid and base subunits are arrange alternately in the crystal structure, displaying a wave-like tape motif via inter-molecular O-H⋯N and C-H⋯O hydrogen bonds [carbox-yl-pyridine synthon of R(2) (2)(7) hydrogen-bond notation], which are further combined into a two-dimensional architecture through C-H⋯F inter-actions involving the bipy and H(2)fip mol-ecules.
| S-EPMC3052053 | biostudies-literature
Project description:In the title 1:1 cocrystal, C(10)H(8)N(2)S(2)·C(8)H(6)O(4), the asymmetric unit contains an isophthalic acid mol-ecule and a 4,4'-dipyridyl disulfide mol-ecule. The two carboxyl groups of isophthalic acid inter-act with neighbouring 4,4'-dipyridyl disulfide mol-ecules through O-H⋯N hydrogen bonds, forming a one-dimensional zigzag chain. Neighbouring chains are linked to each other via π-π stacking inter-actions between the pyridyl rings of adjacent 4,4'-dipyridyl disulfide mol-ecules [centroid-centroid distance = 3.7346 (6) Å], resulting in a layered motif. The dihedral angle between pyridine rings of 84.13 (7)° and the C-S-S-C torsion angle of 91.95 (1)° confirm the gauche conformation of 4,4'-dipyridyl disulfide.
| S-EPMC2977736 | biostudies-literature