☆ 4.7 Article

Dysprosium Chlorocyanoanilate-Based 2D-Layered Coordination Polymers

INORGANIC CHEMISTRY (2019)

期刊

INORGANIC CHEMISTRY

卷 58, 期 20, 页码 13988-13998

出版社

AMER CHEMICAL SOC

DOI: 10.1021/acs.inorgchem.9b01968

关键词

类别

Chemistry, Inorganic & Nuclear

资金

CNRS, the University of Angers
RFI Regional project LUMOMAT
Fondazione di Sardegna, Convenzione triennale tra la Fondazione di Sardegna e gli Atenei Sardi, Regione Sardegna [L.R 7/2007, DGR 28/21]
INSTM
SENSORI LUMINESCENTI AD EFFETTO PLASMONICO PER IL RILEVAMENTO DEI METALLI PESANTI NELLE ACQUE, Regione Autonoma Della Sardegna [SULCIS 820947]
111 project from China [B18030]

向作者/读者索取更多资源

Protocol

社区支持

Reagent

社区支持

摘要

A series of two-dimensional (2D)-layered coordination polymers (CPs) based on the heterosubstituted anilate ligand ClCNAn(2-) derived from 3-chloro-6-cyano-2,5-dihydroxybenzoquinone and Dy-III are reported. By changes in the synthetic methods (layering technique, solvothermal or conventional one-pot reactions) and conditions (solvent, concentration, etc.), different types of 2D extended networks could be prepared and structurally characterized. Compounds 1 and 1', two polymorphs with the formula [Dy-2(ClCNAn)(3)(DMSO)(6)](n)center dot(H2O) [x = 7 (1), 0 (1')], were prepared by a conventional one-pot reaction and recrystallized at different concentrations. Compound 2, formulated as [Dy-2(ClCNAn)(3)(DMF)(6)](n), was prepared by a layering technique, while compound 3, formulated as {(Me2NH2)(2)[Dy-2(ClCNAn)(4)(H2O)(2)]center dot(DMF)(2)center dot(H2O)(5)}(n), was obtained by a solvothermal method. Compounds 1 and 2 are neutral 2D CPs of the ClCNAn(2-) ligand and Dy-III ions, while 3 presents 2D anionic layers of [Dy-2(ClCNAn)(4)(H2O)(2)](2-) alternating with cationic layers of Me2NH2+ ions. These compounds show very diverse networks, with compound 1 forming 2D (8,3) and (4,3) topology with eight- and four-membered rings with square cavities, 1' and 2, respectively, a 2D (6,3) topology with six-membered rings (a rectangular cavity for 1' and a regular hexagonal cavity for 2), and 3 a 2D (4,4) topology with distorted square cavities. In this respect, 1 and 1' represent the first examples of polymorphism in the family of anilate-based CPs. Thermal analysis measurements (differential scanning calorimetry and thermogravimetry) show an exothermic polymorphic transformation from the kinetically stable 1' phase to the thermodynamically stable phase 1. The magnetic behavior of 1-3 very likely indicates depopulation of the m(J) levels, while the presence of weak antiferromagnetic coupling between the Dy-III centers mediated by the anilate bridge cannot be excluded.

作者

我是这篇论文的作者

点击您的名字以认领此论文并将其添加到您的个人资料中。

主要评分

4.7

评分不足

次要评分

新颖性

重要性

科学严谨性

评价这篇论文

Solvent-mediated framework flexibility of interdigitated 2D layered metal-organic frameworks†

Seonghwan Lee, Seok Jeong, Junmo Seong, Jaewoong Lim, Amitosh Sharma, Somi Won, Dohyun Moon, Seung Bin Baek, Myoung Soo Lah

Summary: A new interdigitated two-dimensional layered metal-organic framework with switchable framework flexibility and CO2 adsorption behavior was synthesized. The framework flexibility and CO2 adsorption behavior can be controlled by guest DMA molecules encapsulated in the solvent pores, allowing reversible expansion and contraction under CO2 conditions. The interlayer interactions in a fully contracted framework are significantly stronger than those in a partially contracted framework, showing no framework expansion under the same conditions.

MATERIALS CHEMISTRY FRONTIERS (2021)