Ionothermal synthesis of a 3D zinc(II)-carboxylate coordination polymer with bcu topology based on heptanuclear [Zn7(μ4-O)2] cluster

Photocatalytic and Ferric Ion Sensing Properties of a New Three-Dimensional Metal-Organic Framework Based on Cuboctahedral Secondary Building Units

A new three-dimensional microporous metal-organic framework based on Zn(II) clusters with the formula {[Zn₇(NDC)_5.5(μ₄-OH)₃]·7DMF} _n (1) (H₂NDC = 1,4-naphthalenedicarboxylic acid) had been synthesized and characterized. The MOF 1 displays an uncommon bsn topology, which is based on a unique heptanuclear Zn₇(OH)₃(CO₂)₁₁ cluster as a secondary building unit. The MOF had been employed as a photocatalyst for the photodegradation of model organic dyes rhodamine B and methyl violet in light. The results of photocatalytic experiments showed that 1 can successfully be employed as the photocatalyst for the benign decomposition of these dyes. A mechanism for the photcatalysis exhibited by 1 had been proposed using the results of density of states (DOS) and partial DOS calculations. The fluorescence properties of the MOF have been investigated, which revealed that 1 could be exploited as the luminescent sensor to recognize Fe³⁺ ions with perceptible quenching (K _sv = 6.55 × 10⁴ M-¹) and a limit of detection of 1.16 ppm.

A new Zn(ii)-based 3D metal–organic framework with uncommon sev topology and its photocatalytic properties for the degradation of organic dyes

A new Zn(ii) based 3D MOF having uncommon sev topology synthesized and used as efficient photocatalyst for the photodegradation of dyes methyl violet and rhodamine B.

Five metal–organic frameworks from 3,4-dimethylphenyl substituted imidazole dicarboxylate: syntheses, structures and properties

Five metal–organic frameworks have been hydrothermally synthesized and structurally characterized.

A two-dimensional coordination polymer containing a two-dimensional zinc-carboxylate layer constructed from helical chains: poly[(μ4-benzene-1,2-dicarboxylato)zinc(II)]

The title compound, [Zn(C(8)H(4)O(4))](n), consists of one Zn(II) cation and one benzene-1,2-dicarboxylate dianion (BDC(2-)) as the building unit. The Zn(II) cation is four-coordinated by four carboxylate O atoms from four dianionic BDC(2-) ligands in a distorted tetrahedral geometry. The Zn(II) cations are linked by the BDC(2-) ligands to generate a structure featuring two-dimensional zinc-carboxylate layers containing left- and right-handed helical chains. The two-dimensional layers are stacked along the a direction. The thermal stability of the title compound has been studied.